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Diffstat (limited to 'plug-ins/common/sphere-designer.c')
| -rw-r--r-- | plug-ins/common/sphere-designer.c | 3166 |
1 files changed, 3166 insertions, 0 deletions
diff --git a/plug-ins/common/sphere-designer.c b/plug-ins/common/sphere-designer.c new file mode 100644 index 0000000..624e6ff --- /dev/null +++ b/plug-ins/common/sphere-designer.c @@ -0,0 +1,3166 @@ +/* + * GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +/* + * SphereDesigner v0.4 - creates textured spheres + * by Vidar Madsen <vidar@prosalg.no> + * + * Status: Last updated 1999-09-11 + * + * Known issues: + * - Might crash if you click OK or Cancel before first preview is rendered + * - Phong might look weird with transparent textures + * + * Todo: + * - Saving / Loading of presets needs an overhaul + * - Antialiasing + * - Global controls: Gamma, ++ + * - Beautification of GUI + * - Clean up messy source (lots of Glade remnants) + * - (Probably more. ;-) + */ + +#include "config.h" + +#include <string.h> +#include <errno.h> + +#include <glib/gstdio.h> + +#include <libgimp/gimp.h> +#include <libgimp/gimpui.h> + +#include "libgimp/stdplugins-intl.h" + + +#define PLUG_IN_PROC "plug-in-spheredesigner" +#define PLUG_IN_BINARY "sphere-designer" +#define PLUG_IN_ROLE "gimp-sphere-designer" + +#define RESPONSE_RESET 1 + +#define PREVIEWSIZE 150 + +/* These must be adjusted as more functionality is added */ +#define MAXOBJECT 5 +#define MAXLIGHT 5 +#define MAXTEXTURE 20 +#define MAXTEXTUREPEROBJ 20 +#define MAXNORMAL 20 +#define MAXNORMALPEROBJ 20 +#define MAXATMOS 1 +#define MAXCOLPERGRADIENT 5 + +static void query (void); +static void run (const gchar *name, + gint nparams, + const GimpParam *param, + gint *nreturn_vals, + GimpParam **return_vals); + +const GimpPlugInInfo PLUG_IN_INFO = +{ + NULL, /* init_proc */ + NULL, /* quit_proc */ + query, /* query_proc */ + run, /* run_proc */ +}; + +enum +{ + TRIANGLE, + DISC, + PLANE, + SPHERE, + CYLINDER, + LIGHT +}; + +enum +{ + SOLID, + CHECKER, + MARBLE, + LIZARD, + IMAGE, + PHONG, + REFLECTION, + REFRACTION, + PERLIN, + WOOD, + TRANSPARENT, + SPIRAL, + SPOTS, + SMOKE +}; + +enum +{ + PERSPECTIVE, + ORTHOGONAL, + FISHEYE +}; + +enum +{ + FOG +}; + +enum +{ + TYPE, + TEXTURE, + NUM_COLUMNS +}; + + +/* World-flags */ +#define SMARTAMBIENT 0x00000001 + +/* Object-flags */ +#define NOSHADOW 0x00000001 + +/* Texture-flags */ +#define GRADIENT 0x00000001 + +typedef struct +{ + gshort xsize, ysize; + guchar *rgb; +} image; + +typedef struct +{ + gshort numcol; + gdouble pos[MAXCOLPERGRADIENT]; + GimpVector4 color[MAXCOLPERGRADIENT]; +} gradient; + +typedef struct +{ + gint majtype; + gint type; + gulong flags; + GimpVector4 color1, color2; + gradient gradient; + GimpVector4 ambient, diffuse; + gdouble oscale; + GimpVector4 scale, translate, rotate; + image image; + GimpVector4 reflection; + GimpVector4 refraction; + GimpVector4 transparent; + gdouble ior; + GimpVector4 phongcolor; + gdouble phongsize; + gdouble amount; + gdouble exp; + GimpVector4 turbulence; +} texture; + +typedef struct +{ + gshort type; + gdouble density; + GimpVector4 color; + gdouble turbulence; +} atmos; + +typedef struct +{ + gshort type; + gulong flags; + gshort numtexture; + texture texture[MAXTEXTUREPEROBJ]; + gshort numnormal; + texture normal[MAXNORMALPEROBJ]; +} common; + +typedef struct +{ + common com; + GimpVector4 a, b, c; +} triangle; + +typedef struct +{ + common com; + GimpVector4 a; + gdouble b, r; +} disc; + +typedef struct +{ + common com; + GimpVector4 a; + gdouble r; +} sphere; + +typedef struct +{ + common com; + GimpVector4 a, b, c; +} cylinder; + +typedef struct +{ + common com; + GimpVector4 a; + gdouble b; +} plane; + +typedef struct +{ + common com; + GimpVector4 color; + GimpVector4 a; +} light; + +typedef struct +{ + GimpVector4 v1, v2; + gshort inside; + gdouble ior; +} ray; + +typedef union +{ + common com; + triangle tri; + disc disc; + plane plane; + sphere sphere; + cylinder cylinder; +} object; + + +struct world_t +{ + gint numobj; + object obj[MAXOBJECT]; + gint numlight; + light light[MAXLIGHT]; + gint numtexture; + texture texture[MAXTEXTURE]; + gulong flags; + gshort quality; + gdouble smartambient; + gshort numatmos; + atmos atmos[MAXATMOS]; +}; + +struct camera_t +{ + GimpVector4 location, lookat, up, right; + short type; + double fov, tilt; +}; + +static GtkWidget *drawarea = NULL; + +static guchar *img; +static gint img_stride; +static cairo_surface_t *buffer; + +static guint idle_id = 0; + +static sphere s; + +struct textures_t +{ + gint index; + gchar *s; + glong n; +}; + +static struct textures_t textures[] = +{ + { 0, N_("Solid"), SOLID }, + { 1, N_("Checker"), CHECKER }, + { 2, N_("Marble"), MARBLE }, + { 3, N_("Lizard"), LIZARD }, + { 4, N_("Phong"), PHONG }, + { 5, N_("Noise"), PERLIN }, + { 6, N_("Wood"), WOOD }, + { 7, N_("Spiral"), SPIRAL }, + { 8, N_("Spots"), SPOTS }, + { 0, NULL, 0 } +}; + +static inline void vset (GimpVector4 *v, + gdouble a, + gdouble b, + gdouble c); +static void restartrender (void); +static void drawcolor1 (GtkWidget *widget); +static void drawcolor2 (GtkWidget *widget); +static gboolean render (void); +static void realrender (gint32 drawable_ID); +static void fileselect (GtkFileChooserAction action, + GtkWidget *parent); +static gint traceray (ray *r, + GimpVector4 *col, + gint level, + gdouble imp); +static gdouble turbulence (gdouble *point, + gdouble lofreq, + gdouble hifreq); + + +#define COLORBUTTONWIDTH 30 +#define COLORBUTTONHEIGHT 20 + +static GtkTreeView *texturelist = NULL; + +static GtkObject *scalexscale, *scaleyscale, *scalezscale; +static GtkObject *rotxscale, *rotyscale, *rotzscale; +static GtkObject *posxscale, *posyscale, *poszscale; +static GtkObject *scalescale; +static GtkObject *turbulencescale; +static GtkObject *amountscale; +static GtkObject *expscale; +static GtkWidget *typemenu; +static GtkWidget *texturemenu; + +#define DOT(a,b) (a[0] * b[0] + a[1] * b[1] + a[2] * b[2]) + +#define B 256 + +static gint p[B + B + 2]; +static gdouble g[B + B + 2][3]; +static gboolean start = TRUE; +static GRand *gr; + + +static void +init (void) +{ + gint i, j, k; + gdouble v[3], s; + + /* Create an array of random gradient vectors uniformly on the unit sphere */ + + gr = g_rand_new (); + g_rand_set_seed (gr, 1); /* Use static seed, to get reproducible results */ + + for (i = 0; i < B; i++) + { + do + { /* Choose uniformly in a cube */ + for (j = 0; j < 3; j++) + v[j] = g_rand_double_range (gr, -1, 1); + s = DOT (v, v); + } + while (s > 1.0); /* If not in sphere try again */ + s = sqrt (s); + for (j = 0; j < 3; j++) /* Else normalize */ + g[i][j] = v[j] / s; + } + +/* Create a pseudorandom permutation of [1..B] */ + + for (i = 0; i < B; i++) + p[i] = i; + for (i = B; i > 0; i -= 2) + { + k = p[i]; + p[i] = p[j = g_rand_int_range (gr, 0, B)]; + p[j] = k; + } + + /* Extend g and p arrays to allow for faster indexing */ + + for (i = 0; i < B + 2; i++) + { + p[B + i] = p[i]; + for (j = 0; j < 3; j++) + g[B + i][j] = g[i][j]; + } + g_rand_free (gr); +} + +#define setup(i,b0,b1,r0,r1) \ + t = vec[i] + 10000.; \ + b0 = ((int)t) & (B-1); \ + b1 = (b0+1) & (B-1); \ + r0 = t - (int)t; \ + r1 = r0 - 1.; + + +static gdouble +noise3 (gdouble * vec) +{ + gint bx0, bx1, by0, by1, bz0, bz1, b00, b10, b01, b11; + gdouble rx0, rx1, ry0, ry1, rz0, rz1, *q, sx, sy, sz, a, b, c, d, t, u, v; + gint i, j; + + if (start) + { + start = FALSE; + init (); + } + + setup (0, bx0, bx1, rx0, rx1); + setup (1, by0, by1, ry0, ry1); + setup (2, bz0, bz1, rz0, rz1); + + i = p[bx0]; + j = p[bx1]; + + b00 = p[i + by0]; + b10 = p[j + by0]; + b01 = p[i + by1]; + b11 = p[j + by1]; + +#define at(rx,ry,rz) ( rx * q[0] + ry * q[1] + rz * q[2] ) + +#define surve(t) ( t * t * (3. - 2. * t) ) + +#define lerp(t, a, b) ( a + t * (b - a) ) + + sx = surve (rx0); + sy = surve (ry0); + sz = surve (rz0); + + + q = g[b00 + bz0]; + u = at (rx0, ry0, rz0); + q = g[b10 + bz0]; + v = at (rx1, ry0, rz0); + a = lerp (sx, u, v); + + q = g[b01 + bz0]; + u = at (rx0, ry1, rz0); + q = g[b11 + bz0]; + v = at (rx1, ry1, rz0); + b = lerp (sx, u, v); + + c = lerp (sy, a, b); /* interpolate in y at lo x */ + + q = g[b00 + bz1]; + u = at (rx0, ry0, rz1); + q = g[b10 + bz1]; + v = at (rx1, ry0, rz1); + a = lerp (sx, u, v); + + q = g[b01 + bz1]; + u = at (rx0, ry1, rz1); + q = g[b11 + bz1]; + v = at (rx1, ry1, rz1); + b = lerp (sx, u, v); + + d = lerp (sy, a, b); /* interpolate in y at hi x */ + + return 1.5 * lerp (sz, c, d); /* interpolate in z */ +} + +static double +turbulence (gdouble * point, gdouble lofreq, gdouble hifreq) +{ + gdouble freq, t, p[3]; + + p[0] = point[0] + 123.456; + p[1] = point[1] + 234.567; + p[2] = point[2] + 345.678; + + t = 0; + for (freq = lofreq; freq < hifreq; freq *= 2.) + { + t += noise3 (p) / freq; + p[0] *= 2.; + p[1] *= 2.; + p[2] *= 2.; + } + return t - 0.3; /* readjust to make mean value = 0.0 */ +} + +static struct world_t world; + +static inline void +vcopy (GimpVector4 *a, GimpVector4 *b) +{ + *a = *b; +} + +static inline void +vcross (GimpVector4 *r, GimpVector4 *a, GimpVector4 *b) +{ + r->x = a->y * b->z - a->z * b->y; + r->y = -(a->x * b->z - a->z * b->x); + r->z = a->x * b->y - a->y * b->x; +} + +static inline gdouble +vdot (GimpVector4 *a, GimpVector4 *b) +{ + return a->x * b->x + a->y * b->y + a->z * b->z; +} + +static inline gdouble +vdist (GimpVector4 *a, GimpVector4 *b) +{ + gdouble x, y, z; + + x = a->x - b->x; + y = a->y - b->y; + z = a->z - b->z; + + return sqrt (x * x + y * y + z * z); +} + +static inline gdouble +vdist2 (GimpVector4 *a, GimpVector4 *b) +{ + gdouble x, y, z; + + x = a->x - b->x; + y = a->y - b->y; + z = a->z - b->z; + + return x * x + y * y + z * z; +} + +static inline gdouble +vlen (GimpVector4 *a) +{ + return sqrt (a->x * a->x + a->y * a->y + a->z * a->z); +} + +static inline void +vnorm (GimpVector4 *a, gdouble v) +{ + gdouble d; + + d = vlen (a); + a->x *= v / d; + a->y *= v / d; + a->z *= v / d; +} + +static inline void +vrotate (GimpVector4 *axis, gdouble ang, GimpVector4 *vector) +{ + gdouble rad = ang / 180.0 * G_PI; + gdouble ax = vector->x; + gdouble ay = vector->y; + gdouble az = vector->z; + gdouble x = axis->x; + gdouble y = axis->y; + gdouble z = axis->z; + gdouble c = cos (rad); + gdouble s = sin (rad); + gdouble c1 = 1.0 - c; + gdouble xx = c1 * x * x; + gdouble yy = c1 * y * y; + gdouble zz = c1 * z * z; + gdouble xy = c1 * x * y; + gdouble xz = c1 * x * z; + gdouble yz = c1 * y * z; + gdouble sx = s * x; + gdouble sy = s * y; + gdouble sz = s * z; + + vector->x = (xx + c) * ax + (xy + sz) * ay + (xz - sy) * az; + vector->y = (xy - sz) * ax + (yy + c) * ay + (yz + sx) * az; + vector->z = (xz + sy) * ax + (yz - sx) * ay + (zz + c) * az; +} + +static inline void +vset (GimpVector4 *v, gdouble a, gdouble b, gdouble c) +{ + v->x = a; + v->y = b; + v->z = c; + v->w = 1.0; +} + +static inline void +vcset (GimpVector4 *v, gdouble a, gdouble b, gdouble c, gdouble d) +{ + v->x = a; + v->y = b; + v->z = c; + v->w = d; +} + +static inline void +vvrotate (GimpVector4 *p, GimpVector4 *rot) +{ + GimpVector4 axis; + + if (rot->x != 0.0) + { + vset (&axis, 1, 0, 0); + vrotate (&axis, rot->x, p); + } + if (rot->y != 0.0) + { + vset (&axis, 0, 1, 0); + vrotate (&axis, rot->y, p); + } + if (rot->z != 0.0) + { + vset (&axis, 0, 0, 1); + vrotate (&axis, rot->z, p); + } +} + +static inline void +vsub (GimpVector4 *a, GimpVector4 *b) +{ + a->x -= b->x; + a->y -= b->y; + a->z -= b->z; + a->w -= b->w; +} + +static inline void +vadd (GimpVector4 *a, GimpVector4 *b) +{ + a->x += b->x; + a->y += b->y; + a->z += b->z; + a->w += b->w; +} + +static inline void +vneg (GimpVector4 *a) +{ + a->x = -a->x; + a->y = -a->y; + a->z = -a->z; + a->w = -a->w; +} + +static inline void +vmul (GimpVector4 *v, gdouble a) +{ + v->x *= a; + v->y *= a; + v->z *= a; + v->w *= a; +} + +static inline void +vvmul (GimpVector4 *a, GimpVector4 *b) +{ + a->x *= b->x; + a->y *= b->y; + a->z *= b->z; + a->w *= b->w; +} + +static inline void +vvdiv (GimpVector4 *a, GimpVector4 *b) +{ + a->x /= b->x; + a->y /= b->y; + a->z /= b->z; +} + +static void +vmix (GimpVector4 *r, GimpVector4 *a, GimpVector4 *b, gdouble v) +{ + gdouble i = 1.0 - v; + + r->x = a->x * v + b->x * i; + r->y = a->y * v + b->y * i; + r->z = a->z * v + b->z * i; + r->w = a->w * v + b->w * i; +} + +static double +vmax (GimpVector4 *a) +{ + gdouble max = fabs (a->x); + + if (fabs (a->y) > max) + max = fabs (a->y); + if (fabs (a->z) > max) + max = fabs (a->z); + if (fabs (a->w) > max) + max = fabs (a->w); + + return max; +} + +#if 0 +static void +vavg (GimpVector4 * a) +{ + gdouble s; + + s = (a->x + a->y + a->z) / 3.0; + a->x = a->y = a->z = s; +} +#endif + +static void +trianglenormal (GimpVector4 * n, gdouble *t, triangle * tri) +{ + triangle tmp; + vcopy (&tmp.b, &tri->b); + vcopy (&tmp.c, &tri->c); + vsub (&tmp.b, &tri->a); + vsub (&tmp.c, &tri->a); + vset (&tmp.a, 0, 0, 0); + vcross (n, &tmp.b, &tmp.c); + if (t) + *t = vdot (&tmp.b, &tmp.c); +} + +static gdouble +checkdisc (ray * r, disc * disc) +{ + GimpVector4 p, *v = &disc->a; + gdouble t, d2; + gdouble i, j, k; + + i = r->v2.x - r->v1.x; + j = r->v2.y - r->v1.y; + k = r->v2.z - r->v1.z; + + t = -(v->x * r->v1.x + v->y * r->v1.y + v->z * r->v1.z - disc->b) / + (v->x * i + v->y * j + v->z * k); + + p.x = r->v1.x + i * t; + p.y = r->v1.y + j * t; + p.z = r->v1.z + k * t; + + d2 = vdist2 (&p, v); + + if (d2 > disc->r * disc->r) + t = 0.0; + + return t; +} + +static gdouble +checksphere (ray * r, sphere * sphere) +{ + GimpVector4 cendir, rdir; + gdouble dirproj, cdlensq; + gdouble linear, constant, rsq, quadratic, discriminant; + gdouble smallzero, solmin, solmax, tolerance = 0.001; + + vcopy (&rdir, &r->v2); + vsub (&rdir, &r->v1); + + rsq = sphere->r * sphere->r; + + vcopy (&cendir, &r->v1); + vsub (&cendir, &sphere->a); + dirproj = vdot (&rdir, &cendir); + cdlensq = vdot (&cendir, &cendir); + + if ((cdlensq >= rsq) && (dirproj > 0.0)) + return 0.0; + + linear = 2.0 * dirproj; + constant = cdlensq - rsq; + quadratic = vdot (&rdir, &rdir); + + smallzero = (constant / linear); + if ((smallzero < tolerance) && (smallzero > -tolerance)) + { + solmin = -linear / quadratic; + + if (solmin > tolerance) + { + return solmin; + /* + *hits = solmin; + return 1; + */ + } + else + return 0.0; + } + discriminant = linear * linear - 4.0 * quadratic * constant; + if (discriminant < 0.0) + return 0.0; + quadratic *= 2.0; + discriminant = sqrt (discriminant); + solmax = (-linear + discriminant) / (quadratic); + solmin = (-linear - discriminant) / (quadratic); + + if (solmax < tolerance) + return 0.0; + + if (solmin < tolerance) + { + return solmax; + /* + * hits = solmax; + * return 1; + */ + } + else + { + return solmin; + /* + * hits++ = solmin; + * hits = solmax; + * return 2; + */ + } +} + +static gdouble +checkcylinder (ray * r, cylinder * cylinder) +{ + /* FIXME */ + return 0.0; +} + + +static gdouble +checkplane (ray * r, plane * plane) +{ + GimpVector4 *v = &plane->a; + gdouble t; + gdouble i, j, k; + + i = r->v2.x - r->v1.x; + j = r->v2.y - r->v1.y; + k = r->v2.z - r->v1.z; + + t = -(v->x * r->v1.x + v->y * r->v1.y + v->z * r->v1.z - plane->b) / + (v->x * i + v->y * j + v->z * k); + + return t; +} + +static gdouble +checktri (ray * r, triangle * tri) +{ + GimpVector4 ed1, ed2; + GimpVector4 tvec, pvec, qvec; + gdouble det, idet, t, u, v; + GimpVector4 *orig, dir; + + orig = &r->v1; + dir = r->v2; + vsub (&dir, orig); + + ed1.x = tri->c.x - tri->a.x; + ed1.y = tri->c.y - tri->a.y; + ed1.z = tri->c.z - tri->a.z; + ed2.x = tri->b.x - tri->a.x; + ed2.y = tri->b.y - tri->a.y; + ed2.z = tri->b.z - tri->a.z; + vcross (&pvec, &dir, &ed2); + det = vdot (&ed1, &pvec); + + idet = 1.0 / det; + + tvec.x = orig->x; + tvec.y = orig->y; + tvec.z = orig->z; + vsub (&tvec, &tri->a); + u = vdot (&tvec, &pvec) * idet; + + if (u < 0.0) + return 0; + if (u > 1.0) + return 0; + + vcross (&qvec, &tvec, &ed1); + v = vdot (&dir, &qvec) * idet; + + if ((v < 0.0) || (u + v > 1.0)) + return 0; + + t = vdot (&ed2, &qvec) * idet; + + return t; +} + +static void +transformpoint (GimpVector4 * p, texture * t) +{ + gdouble point[3], f; + + if ((t->rotate.x != 0.0) || (t->rotate.y != 0.0) || (t->rotate.z != 0.0)) + vvrotate (p, &t->rotate); + vvdiv (p, &t->scale); + + vsub (p, &t->translate); + + if ((t->turbulence.x != 0.0) || (t->turbulence.y != 0.0) || + (t->turbulence.z != 0.0)) + { + point[0] = p->x; + point[1] = p->y; + point[2] = p->z; + f = turbulence (point, 1, 256); + p->x += t->turbulence.x * f; + p->y += t->turbulence.y * f; + p->z += t->turbulence.z * f; + } +} + +static void +checker (GimpVector4 *q, GimpVector4 *col, texture *t) +{ + gint c = 0; + GimpVector4 p; + + p = *q; + transformpoint (&p, t); + + vmul (&p, 0.25); + + p.x += 0.00001; + p.y += 0.00001; + p.z += 0.00001; + + if (p.x < 0.0) + p.x = 0.5 - p.x; + if (p.y < 0.0) + p.y = 0.5 - p.y; + if (p.z < 0.0) + p.z = 0.5 - p.z; + + if ((p.x - (gint) p.x) < 0.5) + c ^= 1; + if ((p.y - (gint) p.y) < 0.5) + c ^= 1; + if ((p.z - (gint) p.z) < 0.5) + c ^= 1; + + *col = (c) ? t->color1 : t->color2; +} + +static void +gradcolor (GimpVector4 *col, gradient *t, gdouble val) +{ + gint i; + gdouble d; + GimpVector4 tmpcol; + + val = CLAMP (val, 0.0, 1.0); + + for (i = 0; i < t->numcol; i++) + { + if (t->pos[i] == val) + { + *col = t->color[i]; + return; + } + if (t->pos[i] > val) + { + d = (val - t->pos[i - 1]) / (t->pos[i] - t->pos[i - 1]); + vcopy (&tmpcol, &t->color[i]); + vmul (&tmpcol, d); + vcopy (col, &tmpcol); + vcopy (&tmpcol, &t->color[i - 1]); + vmul (&tmpcol, 1.0 - d); + vadd (col, &tmpcol); + return; + } + } + g_printerr ("Error in gradient!\n"); + vset (col, 0, 1, 0); +} + +static void +marble (GimpVector4 *q, GimpVector4 *col, texture *t) +{ + gdouble f; + GimpVector4 p; + + p = *q; + transformpoint (&p, t); + + f = sin (p.x * 4) / 2 + 0.5; + f = pow (f, t->exp); + + if (t->flags & GRADIENT) + gradcolor (col, &t->gradient, f); + else + vmix (col, &t->color1, &t->color2, f); +} + +static void +lizard (GimpVector4 *q, GimpVector4 *col, texture *t) +{ + gdouble f; + GimpVector4 p; + + p = *q; + transformpoint (&p, t); + + f = fabs (sin (p.x * 4)); + f += fabs (sin (p.y * 4)); + f += fabs (sin (p.z * 4)); + f /= 3.0; + f = pow (f, t->exp); + + if (t->flags & GRADIENT) + gradcolor (col, &t->gradient, f); + else + vmix (col, &t->color1, &t->color2, f); +} + +static void +wood (GimpVector4 *q, GimpVector4 *col, texture *t) +{ + gdouble f; + GimpVector4 p; + + p = *q; + transformpoint (&p, t); + + f = fabs (p.x); + f = f - (int) f; + + f = pow (f, t->exp); + + if (t->flags & GRADIENT) + gradcolor (col, &t->gradient, f); + else + vmix (col, &t->color1, &t->color2, f); +} + +static void +spiral (GimpVector4 *q, GimpVector4 *col, texture *t) +{ + gdouble f; + GimpVector4 p; + + p = *q; + transformpoint (&p, t); + + f = fabs (atan2 (p.x, p.z) / G_PI / 2 + p.y + 99999); + f = f - (int) f; + + f = pow (f, t->exp); + + if (t->flags & GRADIENT) + gradcolor (col, &t->gradient, f); + else + vmix (col, &t->color1, &t->color2, f); +} + +static void +spots (GimpVector4 *q, GimpVector4 *col, texture *t) +{ + gdouble f; + GimpVector4 p, r; + + p = *q; + transformpoint (&p, t); + + p.x += 10000.0; + p.y += 10000.0; + p.z += 10000.0; + + vset (&r, (gint) (p.x + 0.5), (gint) (p.y + 0.5), (gint) (p.z + 0.5)); + f = vdist (&p, &r); + f = cos (f * G_PI); + f = CLAMP (f, 0.0, 1.0); + f = pow (f, t->exp); + + if (t->flags & GRADIENT) + gradcolor (col, &t->gradient, f); + else + vmix (col, &t->color1, &t->color2, f); +} + +static void +perlin (GimpVector4 * q, GimpVector4 * col, texture * t) +{ + gdouble f, point[3]; + GimpVector4 p; + + p = *q; + transformpoint (&p, t); + + point[0] = p.x; + point[1] = p.y; + point[2] = p.z; + + f = turbulence (point, 1, 256) * 0.3 + 0.5; + + f = pow (f, t->exp); + + if (t->flags & GRADIENT) + gradcolor (col, &t->gradient, f); + else + vmix (col, &t->color1, &t->color2, f); +} + +static void +imagepixel (GimpVector4 * q, GimpVector4 * col, texture * t) +{ + GimpVector4 p; + gint x, y; + guchar *rgb; + + p = *q; + transformpoint (&p, t); + + x = (p.x * t->image.xsize); + y = (p.y * t->image.ysize); + + x = (x % t->image.xsize + t->image.xsize) % t->image.xsize; + y = (y % t->image.ysize + t->image.ysize) % t->image.ysize; + + rgb = &t->image.rgb[x * 3 + (t->image.ysize - 1 - y) * t->image.xsize * 3]; + vset (col, rgb[0] / 255.0, rgb[1] / 255.0, rgb[2] / 255.0); +} + +static void +objcolor (GimpVector4 *col, GimpVector4 *p, common *obj) +{ + gint i; + texture *t; + GimpVector4 tmpcol; + + vcset (col, 0, 0, 0, 0); + + for (i = 0; i < obj->numtexture; i++) + { + t = &obj->texture[i]; + + if (world.quality < 1) + { + vadd (col, &t->color1); + continue; + } + + vset (&tmpcol, 0, 0, 0); + switch (t->type) + { + case SOLID: + vcopy (&tmpcol, &t->color1); + break; + case CHECKER: + checker (p, &tmpcol, t); + break; + case MARBLE: + marble (p, &tmpcol, t); + break; + case LIZARD: + lizard (p, &tmpcol, t); + break; + case PERLIN: + perlin (p, &tmpcol, t); + break; + case WOOD: + wood (p, &tmpcol, t); + break; + case SPIRAL: + spiral (p, &tmpcol, t); + break; + case SPOTS: + spots (p, &tmpcol, t); + break; + case IMAGE: + imagepixel (p, &tmpcol, t); + break; + case PHONG: + case REFRACTION: + case REFLECTION: + case TRANSPARENT: + case SMOKE: + /* Silently ignore non-color textures */ + continue; + break; + default: + g_printerr ("Warning: unknown texture %d\n", t->type); + break; + } + vmul (&tmpcol, t->amount); + vadd (col, &tmpcol); + } + if (!i) + { + g_printerr ("Warning: object %p has no textures\n", obj); + } +} + +static void +objnormal (GimpVector4 *res, common *obj, GimpVector4 *p) +{ + gint i; + + switch (obj->type) + { + case TRIANGLE: + trianglenormal (res, NULL, (triangle *) obj); + break; + case DISC: + vcopy (res, &((disc *) obj)->a); + break; + case PLANE: + vcopy (res, &((plane *) obj)->a); + break; + case SPHERE: + vcopy (res, &((sphere *) obj)->a); + vsub (res, p); + break; + case CYLINDER: + vset (res, 1, 1, 1); /* fixme */ + break; + default: + g_error ("objnormal(): Unsupported object type!?\n"); + } + vnorm (res, 1.0); + + for (i = 0; i < obj->numnormal; i++) + { + gint k; + GimpVector4 tmpcol[6]; + GimpVector4 q[6], nres; + texture *t = &obj->normal[i]; + gdouble nstep = 0.1; + + vset (&nres, 0, 0, 0); + for (k = 0; k < 6; k++) + { + vcopy (&q[k], p); + } + q[0].x += nstep; + q[1].x -= nstep; + q[2].y += nstep; + q[3].y -= nstep; + q[4].z += nstep; + q[5].z -= nstep; + + switch (t->type) + { + case MARBLE: + for (k = 0; k < 6; k++) + marble (&q[k], &tmpcol[k], t); + break; + case LIZARD: + for (k = 0; k < 6; k++) + lizard (&q[k], &tmpcol[k], t); + break; + case PERLIN: + for (k = 0; k < 6; k++) + perlin (&q[k], &tmpcol[k], t); + break; + case WOOD: + for (k = 0; k < 6; k++) + wood (&q[k], &tmpcol[k], t); + break; + case SPIRAL: + for (k = 0; k < 6; k++) + spiral (&q[k], &tmpcol[k], t); + break; + case SPOTS: + for (k = 0; k < 6; k++) + spots (&q[k], &tmpcol[k], t); + break; + case IMAGE: + for (k = 0; k < 6; k++) + imagepixel (&q[k], &tmpcol[k], t); + break; + case CHECKER: + case SOLID: + case PHONG: + case REFRACTION: + case REFLECTION: + case TRANSPARENT: + case SMOKE: + continue; + break; + default: + g_printerr ("Warning: unknown texture %d\n", t->type); + break; + } + + nres.x = tmpcol[0].x - tmpcol[1].x; + nres.y = tmpcol[2].x - tmpcol[3].x; + nres.z = tmpcol[4].x - tmpcol[5].x; + vadd (&nres, res); + vnorm (&nres, 1.0); + vmul (&nres, t->amount); + vadd (res, &nres); + vnorm (res, 1.0); + } +} + +/* + Quality: + 0 = Color only + 1 = Textures + 2 = Light + Normals + 3 = Shadows + 4 = Phong + 5 = Reflection + Refraction + */ + +static void +calclight (GimpVector4 * col, GimpVector4 * point, common * obj) +{ + gint i, j; + ray r; + gdouble b, a; + GimpVector4 lcol; + GimpVector4 norm; + GimpVector4 pcol; + + vcset (col, 0, 0, 0, 0); + + objcolor (&pcol, point, obj); + a = pcol.w; + + if (world.quality < 2) + { + vcopy (col, &pcol); + return; + } + + for (i = 0; i < obj->numtexture; i++) + { + if (obj->texture[i].type == PHONG) + continue; + if (obj->texture[i].type == REFLECTION) + continue; + if (obj->texture[i].type == REFRACTION) + continue; + if (obj->texture[i].type == TRANSPARENT) + continue; + if (obj->texture[i].type == SMOKE) + continue; + vcopy (&lcol, &pcol); + vvmul (&lcol, &obj->texture[i].ambient); + vadd (col, &lcol); + } + + objnormal (&norm, obj, point); + vnorm (&norm, 1.0); + + r.inside = -1; + r.ior = 1.0; + + for (i = 0; i < world.numlight; i++) + { + vcopy (&r.v1, point); + vcopy (&r.v2, &world.light[i].a); + vmix (&r.v1, &r.v1, &r.v2, 0.9999); + + vsub (&r.v1, &r.v2); + vnorm (&r.v1, 1.0); + b = vdot (&r.v1, &norm); + + if (b < 0.0) + continue; + + for (j = 0; j < obj->numtexture; j++) + { + if (obj->texture[j].type == PHONG) + continue; + if (obj->texture[j].type == REFLECTION) + continue; + if (obj->texture[j].type == REFRACTION) + continue; + if (obj->texture[j].type == TRANSPARENT) + continue; + if (obj->texture[j].type == SMOKE) + continue; + vcopy (&lcol, &pcol); + vvmul (&lcol, &world.light[i].color); + vvmul (&lcol, &obj->texture[j].diffuse); + vmul (&lcol, b); + vadd (col, &lcol); + } + } + col->w = a; +} + +static void +calcphong (common * obj, ray * r2, GimpVector4 * col) +{ + gint i, j; + ray r; + gdouble b; + GimpVector4 lcol; + GimpVector4 norm; + GimpVector4 pcol; + gdouble ps; + + vcopy (&pcol, col); + + vcopy (&norm, &r2->v2); + vsub (&norm, &r2->v1); + vnorm (&norm, 1.0); + + r.inside = -1; + r.ior = 1.0; + + for (i = 0; i < world.numlight; i++) + { + vcopy (&r.v1, &r2->v1); + vcopy (&r.v2, &world.light[i].a); + vmix (&r.v1, &r.v1, &r.v2, 0.9999); + + if (traceray (&r, NULL, -1, 1.0)) + continue; + + /* OK, light is visible */ + + vsub (&r.v1, &r.v2); + vnorm (&r.v1, 1.0); + b = -vdot (&r.v1, &norm); + + for (j = 0; j < obj->numtexture; j++) + { + if (obj->texture[j].type != PHONG) + continue; + + ps = obj->texture[j].phongsize; + + if (b < (1 - ps)) + continue; + ps = (b - (1 - ps)) / ps; + + vcopy (&lcol, &obj->texture[j].phongcolor); + vvmul (&lcol, &world.light[i].color); + vmul (&lcol, ps); + vadd (col, &lcol); + } + } +} + +static int +traceray (ray * r, GimpVector4 * col, gint level, gdouble imp) +{ + gint i, b = -1; + gdouble t = -1.0, min = 0.0; + common *obj, *bobj = NULL; + gint hits = 0; + GimpVector4 p; + + if ((level == 0) || (imp < 0.005)) + { + vset (col, 0, 1, 0); + return 0; + } + + for (i = 0; i < world.numobj; i++) + { + obj = (common *) & world.obj[i]; + switch (obj->type) + { + case TRIANGLE: + t = checktri (r, (triangle *) & world.obj[i]); + break; + case DISC: + t = checkdisc (r, (disc *) & world.obj[i]); + break; + case PLANE: + t = checkplane (r, (plane *) & world.obj[i]); + break; + case SPHERE: + t = checksphere (r, (sphere *) & world.obj[i]); + break; + case CYLINDER: + t = checkcylinder (r, (cylinder *) & world.obj[i]); + break; + default: + g_error ("Illegal object!!\n"); + } + if (t <= 0.0) + continue; + + if (!(obj->flags & NOSHADOW) && (level == -1)) + { + return i + 1; + } + + hits++; + if ((!bobj) || (t < min)) + { + + min = t; + b = i; + bobj = obj; + } + } + if (level == -1) + return 0; + + if (bobj) + { + p.x = r->v1.x + (r->v2.x - r->v1.x) * min; + p.y = r->v1.y + (r->v2.y - r->v1.y) * min; + p.z = r->v1.z + (r->v2.z - r->v1.z) * min; + + calclight (col, &p, bobj); + + if (world.flags & SMARTAMBIENT) + { + gdouble ambient = 0.3 * exp (-min / world.smartambient); + GimpVector4 lcol; + objcolor (&lcol, &p, bobj); + vmul (&lcol, ambient); + vadd (col, &lcol); + } + + for (i = 0; i < bobj->numtexture; i++) + { + + if ((world.quality >= 4) + && ((bobj->texture[i].type == REFLECTION) + || (bobj->texture[i].type == PHONG))) + { + + GimpVector4 refcol, norm, ocol; + ray ref; + + objcolor (&ocol, &p, bobj); + + vcopy (&ref.v1, &p); + vcopy (&ref.v2, &r->v1); + ref.inside = r->inside; + ref.ior = r->ior; + + vmix (&ref.v1, &ref.v1, &ref.v2, 0.9999); /* push it a tad */ + + vsub (&ref.v2, &p); + objnormal (&norm, bobj, &p); + vnorm (&norm, 1.0); + vrotate (&norm, 180.0, &ref.v2); + + vmul (&norm, -0.0001); /* push it a tad */ + vadd (&ref.v1, &norm); + + vnorm (&ref.v2, 1.0); + vadd (&ref.v2, &p); + + if ((world.quality >= 5) + && (bobj->texture[i].type == REFLECTION)) + { + traceray (&ref, &refcol, level - 1, + imp * vmax (&bobj->texture[i].reflection)); + vvmul (&refcol, &bobj->texture[i].reflection); + refcol.w = ocol.w; + vadd (col, &refcol); + } + if (bobj->texture[i].type == PHONG) + { + vcset (&refcol, 0, 0, 0, 0); + calcphong (bobj, &ref, &refcol); + refcol.w = ocol.w; + vadd (col, &refcol); + } + + } + + if ((world.quality >= 5) && (col->w < 1.0)) + { + GimpVector4 refcol; + ray ref; + + vcopy (&ref.v1, &p); + vcopy (&ref.v2, &p); + vsub (&ref.v2, &r->v1); + vnorm (&ref.v2, 1.0); + vadd (&ref.v2, &p); + + vmix (&ref.v1, &ref.v1, &ref.v2, 0.999); /* push it a tad */ + traceray (&ref, &refcol, level - 1, imp * (1.0 - col->w)); + vmul (&refcol, (1.0 - col->w)); + vadd (col, &refcol); + } + + if ((world.quality >= 5) && (bobj->texture[i].type == TRANSPARENT)) + { + GimpVector4 refcol; + ray ref; + + vcopy (&ref.v1, &p); + vcopy (&ref.v2, &p); + vsub (&ref.v2, &r->v1); + vnorm (&ref.v2, 1.0); + vadd (&ref.v2, &p); + + vmix (&ref.v1, &ref.v1, &ref.v2, 0.999); /* push it a tad */ + + traceray (&ref, &refcol, level - 1, + imp * vmax (&bobj->texture[i].transparent)); + vvmul (&refcol, &bobj->texture[i].transparent); + + vadd (col, &refcol); + } + + if ((world.quality >= 5) && (bobj->texture[i].type == SMOKE)) + { + GimpVector4 smcol, raydir, norm; + double tran; + ray ref; + + vcopy (&ref.v1, &p); + vcopy (&ref.v2, &p); + vsub (&ref.v2, &r->v1); + vnorm (&ref.v2, 1.0); + vadd (&ref.v2, &p); + + objnormal (&norm, bobj, &p); + vcopy (&raydir, &r->v2); + vsub (&raydir, &r->v1); + vnorm (&raydir, 1.0); + tran = vdot (&norm, &raydir); + if (tran < 0.0) + continue; + tran *= tran; + vcopy (&smcol, &bobj->texture[i].color1); + vmul (&smcol, tran); + vadd (col, &smcol); + } + + if ((world.quality >= 5) && (bobj->texture[i].type == REFRACTION)) + { + GimpVector4 refcol, norm, tmpv; + ray ref; + double c1, c2, n1, n2, n; + + vcopy (&ref.v1, &p); + vcopy (&ref.v2, &p); + vsub (&ref.v2, &r->v1); + vadd (&ref.v2, &r->v2); + + vmix (&ref.v1, &ref.v1, &ref.v2, 0.999); /* push it a tad */ + + vsub (&ref.v2, &p); + objnormal (&norm, bobj, &p); + + if (r->inside == b) + { + ref.inside = -1; + ref.ior = 1.0; + } + else + { + ref.inside = b; + ref.ior = bobj->texture[i].ior; + } + + c1 = vdot (&norm, &ref.v2); + + if (ref.inside < 0) + c1 = -c1; + + n1 = r->ior; /* IOR of current media */ + n2 = ref.ior; /* IOR of new media */ + n = n1 / n2; + c2 = 1.0 - n * n * (1.0 - c1 * c1); + + if (c2 < 0.0) + { + /* FIXME: Internal reflection should occur */ + c2 = sqrt (-c2); + + } + else + { + c2 = sqrt (c2); + } + + vmul (&ref.v2, n); + vcopy (&tmpv, &norm); + vmul (&tmpv, n * c1 - c2); + vadd (&ref.v2, &tmpv); + + vnorm (&ref.v2, 1.0); + vadd (&ref.v2, &p); + + traceray (&ref, &refcol, level - 1, + imp * vmax (&bobj->texture[i].refraction)); + + vvmul (&refcol, &bobj->texture[i].refraction); + vadd (col, &refcol); + } + } + } + else + { + vcset (col, 0, 0, 0, 0); + min = 10000.0; + vcset (&p, 0, 0, 0, 0); + } + + for (i = 0; i < world.numatmos; i++) + { + GimpVector4 tmpcol; + if (world.atmos[i].type == FOG) + { + gdouble v, pt[3]; + pt[0] = p.x; + pt[1] = p.y; + pt[2] = p.z; + if ((v = world.atmos[i].turbulence) > 0.0) + v = turbulence (pt, 1, 256) * world.atmos[i].turbulence; + v = exp (-(min + v) / world.atmos[i].density); + vmul (col, v); + vcopy (&tmpcol, &world.atmos[i].color); + vmul (&tmpcol, 1.0 - v); + vadd (col, &tmpcol); + } + } + + return hits; +} + +static void +setdefaults (texture * t) +{ + memset (t, 0, sizeof (texture)); + t->type = SOLID; + vcset (&t->color1, 1, 1, 1, 1); + vcset (&t->color2, 0, 0, 0, 1); + vcset (&t->diffuse, 1, 1, 1, 1); + vcset (&t->ambient, 0, 0, 0, 1); + vset (&t->scale, 1, 1, 1); + vset (&t->rotate, 0, 0, 0); + vset (&t->translate, 0, 0, 0); + t->oscale = 1.0; + t->amount = 1.0; + t->exp = 1.0; +} + +static gchar * +mklabel (texture * t) +{ + struct textures_t *l; + static gchar tmps[100]; + + if (t->majtype == 0) + strcpy (tmps, _("Texture")); + else if (t->majtype == 1) + strcpy (tmps, _("Bumpmap")); + else if (t->majtype == 2) + strcpy (tmps, _("Light")); + else + strcpy (tmps, "<unknown>"); + if ((t->majtype == 0) || (t->majtype == 1)) + { + strcat (tmps, " / "); + l = textures; + while (l->s) + { + if (t->type == l->n) + { + strcat (tmps, gettext (l->s)); + break; + } + l++; + } + } + return tmps; +} + +static texture * +currenttexture (void) +{ + GtkTreeSelection *sel; + GtkTreeIter iter; + texture *t = NULL; + + sel = gtk_tree_view_get_selection (texturelist); + + if (gtk_tree_selection_get_selected (sel, NULL, &iter)) + { + gtk_tree_model_get (gtk_tree_view_get_model (texturelist), &iter, + TEXTURE, &t, + -1); + } + + return t; +} + +static void +relabel (void) +{ + GtkTreeModel *model; + GtkTreeSelection *sel; + GtkTreeIter iter; + texture *t = NULL; + + sel = gtk_tree_view_get_selection (texturelist); + + if (gtk_tree_selection_get_selected (sel, NULL, &iter)) + { + model = gtk_tree_view_get_model (texturelist); + + gtk_tree_model_get (model, &iter, + TEXTURE, &t, + -1); + gtk_list_store_set (GTK_LIST_STORE (model), &iter, + TYPE, mklabel (t), + -1); + } +} + +static gboolean noupdate = FALSE; + +static void +setvals (texture *t) +{ + struct textures_t *l; + + if (!t) + return; + + noupdate = TRUE; + gtk_adjustment_set_value (GTK_ADJUSTMENT (amountscale), t->amount); + + gtk_adjustment_set_value (GTK_ADJUSTMENT (scalescale), t->oscale); + + gtk_adjustment_set_value (GTK_ADJUSTMENT (scalexscale), t->scale.x); + gtk_adjustment_set_value (GTK_ADJUSTMENT (scaleyscale), t->scale.y); + gtk_adjustment_set_value (GTK_ADJUSTMENT (scalezscale), t->scale.z); + + gtk_adjustment_set_value (GTK_ADJUSTMENT (rotxscale), t->rotate.x); + gtk_adjustment_set_value (GTK_ADJUSTMENT (rotyscale), t->rotate.y); + gtk_adjustment_set_value (GTK_ADJUSTMENT (rotzscale), t->rotate.z); + + gtk_adjustment_set_value (GTK_ADJUSTMENT (posxscale), t->translate.x); + gtk_adjustment_set_value (GTK_ADJUSTMENT (posyscale), t->translate.y); + gtk_adjustment_set_value (GTK_ADJUSTMENT (poszscale), t->translate.z); + + gtk_adjustment_set_value (GTK_ADJUSTMENT (turbulencescale), + t->turbulence.x); + gtk_adjustment_set_value (GTK_ADJUSTMENT (expscale), t->exp); + + drawcolor1 (NULL); + drawcolor2 (NULL); + + l = textures; + while (l->s) + { + if (l->n == t->type) + { + gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (texturemenu), + l->index); + break; + } + l++; + } + + gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (typemenu), t->majtype); + + noupdate = FALSE; +} + +static void +selectitem (GtkTreeSelection *treeselection, + gpointer data) +{ + setvals (currenttexture ()); +} + +static void +addtexture (void) +{ + GtkListStore *list_store; + GtkTreeIter iter; + gint n = s.com.numtexture; + + if (n == MAXTEXTUREPEROBJ - 1) + return; + + setdefaults (&s.com.texture[n]); + + list_store = GTK_LIST_STORE (gtk_tree_view_get_model (texturelist)); + + gtk_list_store_append (list_store, &iter); + gtk_list_store_set (list_store, &iter, + TYPE, mklabel (&s.com.texture[n]), + TEXTURE, &s.com.texture[n], + -1); + gtk_tree_selection_select_iter (gtk_tree_view_get_selection (texturelist), + &iter); + + s.com.numtexture++; + + restartrender (); +} + +static void +duptexture (void) +{ + GtkListStore *list_store; + GtkTreeIter iter; + texture *t = currenttexture (); + gint n = s.com.numtexture; + + if (n == MAXTEXTUREPEROBJ - 1) + return; + if (!t) + return; + + s.com.texture[n] = *t; + + list_store = GTK_LIST_STORE (gtk_tree_view_get_model (texturelist)); + + gtk_list_store_append (list_store, &iter); + gtk_list_store_set (list_store, &iter, + TYPE, mklabel (&s.com.texture[n]), + TEXTURE, &s.com.texture[n], + -1); + gtk_tree_selection_select_iter (gtk_tree_view_get_selection (texturelist), + &iter); + + s.com.numtexture++; + + restartrender (); +} + +static void +rebuildlist (void) +{ + GtkListStore *list_store; + GtkTreeSelection *sel; + GtkTreeIter iter; + gint n; + + sel = gtk_tree_view_get_selection (texturelist); + + for (n = 0; n < s.com.numtexture; n++) + { + if (s.com.numtexture && (s.com.texture[n].majtype < 0)) + { + gint i; + + for (i = n; i < s.com.numtexture - 1; i++) + s.com.texture[i] = s.com.texture[i + 1]; + + s.com.numtexture--; + n--; + } + } + + list_store = GTK_LIST_STORE (gtk_tree_view_get_model (texturelist)); + + for (n = 0; n < s.com.numtexture; n++) + { + gtk_list_store_append (list_store, &iter); + gtk_list_store_set (list_store, &iter, + TYPE, mklabel (&s.com.texture[n]), + TEXTURE, &s.com.texture[n], + -1); + } + + if (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (list_store), &iter)) + gtk_tree_selection_select_iter (sel, &iter); + + restartrender (); +} + +static void +deltexture (void) +{ + GtkTreeSelection *sel; + GtkTreeModel *model; + GtkTreeIter iter; + texture *t = NULL; + + sel = gtk_tree_view_get_selection (texturelist); + + if (gtk_tree_selection_get_selected (sel, NULL, &iter)) + { + model = gtk_tree_view_get_model (texturelist); + + gtk_tree_model_get (model, &iter, + TEXTURE, &t, + -1); + t->majtype = -1; + gtk_list_store_remove (GTK_LIST_STORE (model), &iter); + } + + restartrender (); +} + +static void +loadit (const gchar * fn) +{ + FILE *f; + gchar endbuf[21 * (G_ASCII_DTOSTR_BUF_SIZE + 1)]; + gchar *end = endbuf; + gchar line[1024]; + gchar fmt_str[16]; + gint i; + texture *t; + gint majtype, type; + + f = g_fopen (fn, "rt"); + if (! f) + { + g_message (_("Could not open '%s' for reading: %s"), + gimp_filename_to_utf8 (fn), g_strerror (errno)); + return; + } + + if (2 != fscanf (f, "%d %d", &majtype, &type) || majtype < 0 || majtype > 2) + { + g_message (_("File '%s' is not a valid save file."), + gimp_filename_to_utf8 (fn)); + fclose (f); + return; + } + + rewind (f); + + s.com.numtexture = 0; + + snprintf (fmt_str, sizeof (fmt_str), "%%d %%d %%%" G_GSIZE_FORMAT "s", sizeof (endbuf) - 1); + + while (!feof (f)) + { + + if (!fgets (line, 1023, f)) + break; + + i = s.com.numtexture; + t = &s.com.texture[i]; + setdefaults (t); + + if (sscanf (line, fmt_str, &t->majtype, &t->type, end) != 3) + t->color1.x = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->color1.y = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->color1.z = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->color1.w = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->color2.x = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->color2.y = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->color2.z = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->color2.w = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->oscale = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->turbulence.x = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->amount = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->exp = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->scale.x = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->scale.y = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->scale.z = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->rotate.x = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->rotate.y = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->rotate.z = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->translate.x = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->translate.y = g_ascii_strtod (end, &end); + if (end && errno != ERANGE) + t->translate.z = g_ascii_strtod (end, &end); + + s.com.numtexture++; + } + + fclose (f); +} + +static void +loadpreset_response (GtkWidget *dialog, + gint response_id, + gpointer data) +{ + if (response_id == GTK_RESPONSE_OK) + { + GtkTreeModel *model = gtk_tree_view_get_model (texturelist); + gchar *name; + + name = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog)); + + gtk_list_store_clear (GTK_LIST_STORE (model)); + + loadit (name); + g_free (name); + + rebuildlist (); + } + + gtk_widget_hide (dialog); +} + +static void +saveit (const gchar *fn) +{ + gint i; + FILE *f; + gchar buf[G_ASCII_DTOSTR_BUF_SIZE]; + + f = g_fopen (fn, "wt"); + if (!f) + { + g_message (_("Could not open '%s' for writing: %s"), + gimp_filename_to_utf8 (fn), g_strerror (errno)); + return; + } + + for (i = 0; i < s.com.numtexture; i++) + { + texture *t = &s.com.texture[i]; + + if (t->majtype < 0) + continue; + + fprintf (f, "%d %d", t->majtype, t->type); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color1.x)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color1.y)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color1.z)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color1.w)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color2.x)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color2.y)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color2.z)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->color2.w)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->oscale)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->turbulence.x)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->amount)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->exp)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->scale.x)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->scale.y)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->scale.z)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->rotate.x)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->rotate.y)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->rotate.z)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->translate.x)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->translate.y)); + fprintf (f, " %s", g_ascii_dtostr (buf, sizeof (buf), t->translate.z)); + fprintf (f, "\n"); + } + + fclose (f); +} + +static void +savepreset_response (GtkWidget *dialog, + gint response_id, + gpointer data) +{ + if (response_id == GTK_RESPONSE_OK) + { + gchar *name = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog)); + + saveit (name); + g_free (name); + } + + gtk_widget_hide (dialog); +} + +static void +loadpreset (GtkWidget *widget, + GtkWidget *parent) +{ + fileselect (GTK_FILE_CHOOSER_ACTION_OPEN, parent); +} + +static void +savepreset (GtkWidget *widget, + GtkWidget *parent) +{ + fileselect (GTK_FILE_CHOOSER_ACTION_SAVE, parent); +} + +static void +fileselect (GtkFileChooserAction action, + GtkWidget *parent) +{ + static GtkWidget *windows[2] = { NULL, NULL }; + + gchar *titles[] = { N_("Open File"), N_("Save File") }; + void *handlers[] = { loadpreset_response, savepreset_response }; + + if (! windows[action]) + { + GtkWidget *dialog = windows[action] = + gtk_file_chooser_dialog_new (gettext (titles[action]), + GTK_WINDOW (parent), + action, + + _("_Cancel"), GTK_RESPONSE_CANCEL, + + action == GTK_FILE_CHOOSER_ACTION_OPEN ? + _("_Open") : _("_Save"), + GTK_RESPONSE_OK, + + NULL); + + gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog), + GTK_RESPONSE_OK, + GTK_RESPONSE_CANCEL, + -1); + + gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK); + + if (action == GTK_FILE_CHOOSER_ACTION_SAVE) + gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (dialog), + TRUE); + + g_signal_connect (dialog, "destroy", + G_CALLBACK (gtk_widget_destroyed), + &windows[action]); + g_signal_connect (dialog, "response", + G_CALLBACK (handlers[action]), + NULL); + } + + gtk_window_present (GTK_WINDOW (windows[action])); +} + +static void +initworld (void) +{ + gint i; + + memset (&world, 0, sizeof (world)); + + s.com.type = SPHERE; + s.a.x = s.a.y = s.a.z = 0.0; + s.r = 4.0; + + /* not: world.obj[0] = s; + * s is a sphere so error C2115: '=' : incompatible types + */ + memcpy (&world.obj[0], &s, sizeof (s)); + world.numobj = 1; + + world.obj[0].com.numtexture = 0; + world.obj[0].com.numnormal = 0; + + for (i = 0; i < s.com.numtexture; i++) + { + common *c = &s.com; + common *d = &world.obj[0].com; + texture *t = &c->texture[i]; + if ((t->amount <= 0.0) || (t->majtype < 0)) + continue; + if (t->majtype == 0) + { /* Normal texture */ + if (t->type == PHONG) + { + t->phongcolor = t->color1; + t->phongsize = t->oscale / 25.0; + } + d->texture[d->numtexture] = *t; + vmul (&d->texture[d->numtexture].scale, + d->texture[d->numtexture].oscale); + d->numtexture++; + } + else if (t->majtype == 1) + { /* Bumpmap */ + d->normal[d->numnormal] = *t; + vmul (&d->normal[d->numnormal].scale, + d->texture[d->numnormal].oscale); + d->numnormal++; + } + else if (t->majtype == 2) + { /* Lightsource */ + light l; + vcopy (&l.a, &t->translate); + vcopy (&l.color, &t->color1); + vmul (&l.color, t->amount); + world.light[world.numlight] = l; + world.numlight++; + } + } + + world.quality = 5; + + world.flags |= SMARTAMBIENT; + world.smartambient = 40.0; +} + +static gboolean +expose_event (GtkWidget *widget, + GdkEventExpose *event) +{ + cairo_t *cr; + + cr = gdk_cairo_create (gtk_widget_get_window (widget)); + + gdk_cairo_region (cr, event->region); + cairo_clip (cr); + + cairo_set_source_surface (cr, buffer, 0.0, 0.0); + + cairo_paint (cr); + + cairo_destroy (cr); + + return TRUE; +} + +static void +restartrender (void) +{ + if (idle_id) + g_source_remove (idle_id); + + idle_id = g_idle_add ((GSourceFunc) render, NULL); +} + +static void +selecttexture (GtkWidget *widget, + gpointer data) +{ + texture *t; + + if (noupdate) + return; + + t = currenttexture (); + if (!t) + return; + + gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &t->type); + + relabel (); + restartrender (); +} + +static void +selecttype (GtkWidget *widget, + gpointer data) +{ + texture *t; + + if (noupdate) + return; + + t = currenttexture (); + if (!t) + return; + + gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &t->majtype); + + relabel (); + restartrender (); +} + +static void +getscales (GtkWidget *widget, + gpointer data) +{ + gdouble f; + texture *t; + + if (noupdate) + return; + + t = currenttexture (); + if (!t) + return; + + t->amount = gtk_adjustment_get_value (GTK_ADJUSTMENT (amountscale)); + t->exp = gtk_adjustment_get_value (GTK_ADJUSTMENT (expscale)); + + f = gtk_adjustment_get_value (GTK_ADJUSTMENT (turbulencescale)); + vset (&t->turbulence, f, f, f); + + t->oscale = gtk_adjustment_get_value (GTK_ADJUSTMENT (scalescale)); + + t->scale.x = gtk_adjustment_get_value (GTK_ADJUSTMENT (scalexscale)); + t->scale.y = gtk_adjustment_get_value (GTK_ADJUSTMENT (scaleyscale)); + t->scale.z = gtk_adjustment_get_value (GTK_ADJUSTMENT (scalezscale)); + + t->rotate.x = gtk_adjustment_get_value (GTK_ADJUSTMENT (rotxscale)); + t->rotate.y = gtk_adjustment_get_value (GTK_ADJUSTMENT (rotyscale)); + t->rotate.z = gtk_adjustment_get_value (GTK_ADJUSTMENT (rotzscale)); + + t->translate.x = gtk_adjustment_get_value (GTK_ADJUSTMENT (posxscale)); + t->translate.y = gtk_adjustment_get_value (GTK_ADJUSTMENT (posyscale)); + t->translate.z = gtk_adjustment_get_value (GTK_ADJUSTMENT (poszscale)); + + restartrender (); +} + + +static void +color1_changed (GimpColorButton *button) +{ + texture *t = currenttexture (); + + if (t) + { + GimpRGB color; + + gimp_color_button_get_color (button, &color); + + t->color1.x = color.r; + t->color1.y = color.g; + t->color1.z = color.b; + t->color1.w = color.a; + + restartrender (); + } +} + +static void +color2_changed (GimpColorButton *button) +{ + texture *t = currenttexture (); + + if (t) + { + GimpRGB color; + + gimp_color_button_get_color (button, &color); + + t->color2.x = color.r; + t->color2.y = color.g; + t->color2.z = color.b; + t->color2.w = color.a; + + restartrender (); + } +} + +static void +drawcolor1 (GtkWidget *w) +{ + static GtkWidget *lastw = NULL; + + GimpRGB color; + texture *t = currenttexture (); + + if (w) + lastw = w; + else + w = lastw; + + if (!w) + return; + if (!t) + return; + + gimp_rgba_set (&color, + t->color1.x, t->color1.y, t->color1.z, t->color1.w); + + gimp_color_button_set_color (GIMP_COLOR_BUTTON (w), &color); +} + +static void +drawcolor2 (GtkWidget *w) +{ + static GtkWidget *lastw = NULL; + + GimpRGB color; + texture *t = currenttexture (); + + if (w) + lastw = w; + else + w = lastw; + + if (!w) + return; + if (!t) + return; + + gimp_rgba_set (&color, + t->color2.x, t->color2.y, t->color2.z, t->color2.w); + + gimp_color_button_set_color (GIMP_COLOR_BUTTON (w), &color); +} + +static gboolean do_run = FALSE; + +static void +sphere_response (GtkWidget *widget, + gint response_id, + gpointer data) +{ + switch (response_id) + { + case RESPONSE_RESET: + s.com.numtexture = 3; + + setdefaults (&s.com.texture[0]); + setdefaults (&s.com.texture[1]); + setdefaults (&s.com.texture[2]); + + s.com.texture[1].majtype = 2; + vset (&s.com.texture[1].color1, 1, 1, 1); + vset (&s.com.texture[1].translate, -15, -15, -15); + + s.com.texture[2].majtype = 2; + vset (&s.com.texture[2].color1, 0, 0.4, 0.4); + vset (&s.com.texture[2].translate, 15, 15, -15); + + gtk_list_store_clear (GTK_LIST_STORE (gtk_tree_view_get_model (texturelist))); + + rebuildlist (); + break; + + case GTK_RESPONSE_OK: + if (idle_id) + { + g_source_remove (idle_id); + idle_id = 0; + } + + do_run = TRUE; + + default: + gtk_widget_hide (widget); + gtk_main_quit (); + break; + } +} + +static GtkWidget * +makewindow (void) +{ + GtkListStore *store; + GtkTreeViewColumn *col; + GtkTreeSelection *selection; + GtkWidget *window; + GtkWidget *main_hbox; + GtkWidget *main_vbox; + GtkWidget *table; + GtkWidget *frame; + GtkWidget *scrolled; + GtkWidget *hbox; + GtkWidget *vbox; + GtkWidget *button; + GtkWidget *list; + GimpRGB rgb = { 0, 0, 0, 0 }; + + window = gimp_dialog_new (_("Sphere Designer"), PLUG_IN_ROLE, + NULL, 0, + gimp_standard_help_func, PLUG_IN_PROC, + + _("_Reset"), RESPONSE_RESET, + _("_Cancel"), GTK_RESPONSE_CANCEL, + _("_OK"), GTK_RESPONSE_OK, + + NULL); + + gtk_dialog_set_alternative_button_order (GTK_DIALOG (window), + RESPONSE_RESET, + GTK_RESPONSE_OK, + GTK_RESPONSE_CANCEL, + -1); + + gimp_window_set_transient (GTK_WINDOW (window)); + + g_signal_connect (window, "response", + G_CALLBACK (sphere_response), + NULL); + + main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); + gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12); + gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (window))), + main_vbox, TRUE, TRUE, 0); + gtk_widget_show (main_vbox); + + main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12); + gtk_box_pack_start (GTK_BOX (main_vbox), main_hbox, TRUE, TRUE, 0); + gtk_widget_show (main_hbox); + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12); + gtk_box_pack_start (GTK_BOX (main_hbox), vbox, FALSE, FALSE, 0); + gtk_widget_show (vbox); + + frame = gtk_frame_new (NULL); + gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN); + gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0); + gtk_widget_show (frame); + + drawarea = gtk_drawing_area_new (); + gtk_container_add (GTK_CONTAINER (frame), drawarea); + gtk_widget_set_size_request (drawarea, PREVIEWSIZE, PREVIEWSIZE); + gtk_widget_show (drawarea); + + g_signal_connect (drawarea, "expose-event", + G_CALLBACK (expose_event), NULL); + + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); + gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE); + gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); + gtk_widget_show (hbox); + + button = gtk_button_new_with_mnemonic (_("_Open")); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + gtk_widget_show (button); + + g_signal_connect (button, "clicked", + G_CALLBACK (loadpreset), + window); + + button = gtk_button_new_with_mnemonic (_("_Save")); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + gtk_widget_show (button); + + g_signal_connect (button, "clicked", + G_CALLBACK (savepreset), + window); + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6); + gtk_box_pack_end (GTK_BOX (main_hbox), vbox, TRUE, TRUE, 0); + gtk_widget_show (vbox); + + scrolled = gtk_scrolled_window_new (NULL, NULL); + gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled), + GTK_SHADOW_IN); + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled), + GTK_POLICY_NEVER, + GTK_POLICY_AUTOMATIC); + gtk_box_pack_start (GTK_BOX (vbox), scrolled, TRUE, TRUE, 0); + gtk_widget_show (scrolled); + + store = gtk_list_store_new (NUM_COLUMNS, G_TYPE_STRING, G_TYPE_POINTER); + list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (store)); + g_object_unref (store); + + texturelist = GTK_TREE_VIEW (list); + + selection = gtk_tree_view_get_selection (texturelist); + + gtk_tree_selection_set_mode (selection, GTK_SELECTION_BROWSE); + + g_signal_connect (selection, "changed", + G_CALLBACK (selectitem), + NULL); + + gtk_widget_set_size_request (list, -1, 150); + gtk_container_add (GTK_CONTAINER (scrolled), list); + gtk_widget_show (list); + + col = gtk_tree_view_column_new_with_attributes (_("Layers"), + gtk_cell_renderer_text_new (), + "text", TYPE, + NULL); + gtk_tree_view_append_column (texturelist, col); + + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0); + gtk_box_set_homogeneous (GTK_BOX (hbox), TRUE); + gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); + gtk_widget_show (hbox); + + button = gtk_button_new_with_mnemonic (_("_New")); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + g_signal_connect_swapped (button, "clicked", + G_CALLBACK (addtexture), NULL); + gtk_widget_show (button); + + button = gtk_button_new_with_mnemonic (_("D_uplicate")); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + g_signal_connect_swapped (button, "clicked", + G_CALLBACK (duptexture), NULL); + gtk_widget_show (button); + + button = gtk_button_new_with_mnemonic (_("_Delete")); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + g_signal_connect_swapped (button, "clicked", + G_CALLBACK (deltexture), NULL); + gtk_widget_show (button); + + main_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12); + gtk_box_pack_start (GTK_BOX (main_vbox), main_hbox, FALSE, FALSE, 0); + gtk_widget_show (main_hbox); + + frame = gimp_frame_new (_("Properties")); + gtk_box_pack_start (GTK_BOX (main_hbox), frame, TRUE, TRUE, 0); + gtk_widget_show (frame); + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); + gtk_container_add (GTK_CONTAINER (frame), vbox); + gtk_widget_show (vbox); + + table = gtk_table_new (7, 3, FALSE); + gtk_table_set_col_spacings (GTK_TABLE (table), 2); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_table_set_row_spacing (GTK_TABLE (table), 2, 12); + gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0); + gtk_widget_show (table); + + typemenu = gimp_int_combo_box_new (_("Texture"), 0, + _("Bump"), 1, + _("Light"), 2, + NULL); + gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (typemenu), 0, + G_CALLBACK (selecttype), + NULL); + + gimp_table_attach_aligned (GTK_TABLE (table), 0, 0, + _("Type:"), 0.0, 0.5, + typemenu, 2, FALSE); + + texturemenu = g_object_new (GIMP_TYPE_INT_COMBO_BOX, NULL); + { + struct textures_t *t; + + for (t = textures; t->s; t++) + gimp_int_combo_box_append (GIMP_INT_COMBO_BOX (texturemenu), + GIMP_INT_STORE_VALUE, t->n, + GIMP_INT_STORE_LABEL, gettext (t->s), + -1); + } + + gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (texturemenu), 0, + G_CALLBACK (selecttexture), + NULL); + + gimp_table_attach_aligned (GTK_TABLE (table), 0, 1, + _("Texture:"), 0.0, 0.5, + texturemenu, 2, FALSE); + + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12); + gimp_table_attach_aligned (GTK_TABLE (table), 0, 2, + _("Colors:"), 0.0, 0.5, + hbox, 2, FALSE); + + button = gimp_color_button_new (_("Color Selection Dialog"), + COLORBUTTONWIDTH, COLORBUTTONHEIGHT, &rgb, + GIMP_COLOR_AREA_FLAT); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + gtk_widget_show (button); + drawcolor1 (button); + + g_signal_connect (button, "color-changed", + G_CALLBACK (color1_changed), + NULL); + + button = gimp_color_button_new (_("Color Selection Dialog"), + COLORBUTTONWIDTH, COLORBUTTONHEIGHT, &rgb, + GIMP_COLOR_AREA_FLAT); + gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0); + gtk_widget_show (button); + drawcolor2 (button); + + g_signal_connect (button, "color-changed", + G_CALLBACK (color2_changed), + NULL); + + scalescale = gimp_scale_entry_new (GTK_TABLE (table), 0, 3, _("Scale:"), + 100, -1, 1.0, 0.0, 10.0, 0.1, 1.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (scalescale, "value-changed", + G_CALLBACK (getscales), + NULL); + + turbulencescale = gimp_scale_entry_new (GTK_TABLE (table), 0, 4, + _("Turbulence:"), + 100, -1, 1.0, 0.0, 10.0, 0.1, 1.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (turbulencescale, "value-changed", + G_CALLBACK (getscales), + NULL); + + amountscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 5, _("Amount:"), + 100, -1, 1.0, 0.0, 1.0, 0.01, 0.1, 2, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (amountscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + expscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 6, _("Exp.:"), + 100, -1, 1.0, 0.0, 1.0, 0.01, 0.1, 2, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (expscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + frame = gimp_frame_new (_("Transformations")); + gtk_box_pack_start (GTK_BOX (main_hbox), frame, TRUE, TRUE, 0); + gtk_widget_show (frame); + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); + gtk_container_add (GTK_CONTAINER (frame), vbox); + gtk_widget_show (vbox); + + table = gtk_table_new (9, 3, FALSE); + gtk_table_set_col_spacings (GTK_TABLE (table), 2); + gtk_table_set_row_spacings (GTK_TABLE (table), 6); + gtk_table_set_row_spacing (GTK_TABLE (table), 2, 12); + gtk_table_set_row_spacing (GTK_TABLE (table), 5, 12); + gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, FALSE, 0); + gtk_widget_show (table); + + scalexscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 0, _("Scale X:"), + 100, -1, 1.0, 0.0, 10.0, 0.1, 1.0, 2, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (scalexscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + scaleyscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 1, _("Scale Y:"), + 100, -1, 1.0, 0.0, 10.0, 0.1, 1.0, 2, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (scaleyscale, "value-changed", + G_CALLBACK (getscales), + NULL); + scalezscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 2, _("Scale Z:"), + 100, -1, 1.0, 0.0, 10.0, 0.1, 1.0, 2, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (scalezscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + rotxscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 3, _("Rotate X:"), + 100, -1, 0.0, 0.0, 360.0, 1.0, 10.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (rotxscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + rotyscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 4, _("Rotate Y:"), + 100, -1, 0.0, 0.0, 360.0, 1.0, 10.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (rotyscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + rotzscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 5, _("Rotate Z:"), + 100, -1, 0.0, 0.0, 360.0, 1.0, 10.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (rotzscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + posxscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 6, _("Position X:"), + 100, -1, 0.0, -20.0, 20.0, 0.1, 1.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (posxscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + posyscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 7, _("Position Y:"), + 100, -1, 0.0, -20.0, 20.0, 0.1, 1.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (posyscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + poszscale = gimp_scale_entry_new (GTK_TABLE (table), 0, 8, _("Position Z:"), + 100, -1, 0.0, -20.0, 20.0, 0.1, 1.0, 1, + TRUE, 0.0, 0.0, NULL, NULL); + g_signal_connect (poszscale, "value-changed", + G_CALLBACK (getscales), + NULL); + + gtk_widget_show (window); + + return window; +} + +static guchar +pixelval (gdouble v) +{ + v += 0.5; + if (v < 0.0) + return 0; + if (v > 255.0) + return 255; + return v; +} + +static gboolean +render (void) +{ + GimpVector4 col; + guchar *dest_row; + ray r; + gint x, y, p; + gint tx = PREVIEWSIZE; + gint ty = PREVIEWSIZE; + gint bpp = 4; + + idle_id = 0; + + initworld (); + + r.v1.z = -10.0; + r.v2.z = 0.0; + + if (world.obj[0].com.numtexture > 0) + { + cairo_surface_flush (buffer); + + for (y = 0; y < ty; y++) + { + dest_row = img + y * img_stride; + + for (x = 0; x < tx; x++) + { + gint g, gridsize = 16; + + g = ((x / gridsize + y / gridsize) % 2) * 60 + 100; + + r.v1.x = r.v2.x = 8.5 * (x / (float) (tx - 1) - 0.5); + r.v1.y = r.v2.y = 8.5 * (y / (float) (ty - 1) - 0.5); + + p = x * bpp; + + traceray (&r, &col, 10, 1.0); + + if (col.w < 0.0) + col.w = 0.0; + else if (col.w > 1.0) + col.w = 1.0; + + GIMP_CAIRO_RGB24_SET_PIXEL ((dest_row + p), + pixelval (255 * col.x) * col.w + g * (1.0 - col.w), + pixelval (255 * col.y) * col.w + g * (1.0 - col.w), + pixelval (255 * col.z) * col.w + g * (1.0 - col.w)); + } + } + + cairo_surface_mark_dirty (buffer); + } + + gtk_widget_queue_draw (drawarea); + + return FALSE; +} + +static void +realrender (gint32 drawable_ID) +{ + GeglBuffer *src_buffer; + GeglBuffer *dest_buffer; + const Babl *format; + gint x, y; + ray r; + GimpVector4 rcol; + gint width, height; + gint x1, y1; + guchar *dest; + gint bpp; + guchar *buffer, *ibuffer; + + initworld (); + + r.v1.z = -10.0; + r.v2.z = 0.0; + + if (! gimp_drawable_mask_intersect (drawable_ID, + &x1, &y1, &width, &height)) + return; + + src_buffer = gimp_drawable_get_buffer (drawable_ID); + dest_buffer = gimp_drawable_get_shadow_buffer (drawable_ID); + + if (gimp_drawable_is_rgb (drawable_ID)) + { + if (gimp_drawable_has_alpha (drawable_ID)) + format = babl_format ("R'G'B'A u8"); + else + format = babl_format ("R'G'B' u8"); + } + else + { + if (gimp_drawable_has_alpha (drawable_ID)) + format = babl_format ("Y'A u8"); + else + format = babl_format ("Y' u8"); + } + + bpp = babl_format_get_bytes_per_pixel (format); + + buffer = g_malloc (width * 4); + ibuffer = g_malloc (width * 4); + + gimp_progress_init (_("Rendering sphere")); + + for (y = 0; y < height; y++) + { + dest = buffer; + for (x = 0; x < width; x++) + { + r.v1.x = r.v2.x = 8.1 * (x / (float) (width - 1) - 0.5); + r.v1.y = r.v2.y = 8.1 * (y / (float) (height - 1) - 0.5); + + traceray (&r, &rcol, 10, 1.0); + dest[0] = pixelval (255 * rcol.x); + dest[1] = pixelval (255 * rcol.y); + dest[2] = pixelval (255 * rcol.z); + dest[3] = pixelval (255 * rcol.w); + dest += 4; + } + + gegl_buffer_get (src_buffer, GEGL_RECTANGLE (x1, y1 + y, width, 1), 1.0, + format, ibuffer, + GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE); + + for (x = 0; x < width; x++) + { + gint k, dx = x * 4, sx = x * bpp; + gfloat a = buffer[dx + 3] / 255.0; + + for (k = 0; k < bpp; k++) + { + ibuffer[sx + k] = + buffer[dx + k] * a + ibuffer[sx + k] * (1.0 - a); + } + } + + gegl_buffer_set (dest_buffer, GEGL_RECTANGLE (x1, y1 + y, width, 1), 0, + format, ibuffer, + GEGL_AUTO_ROWSTRIDE); + + gimp_progress_update ((gdouble) y / (gdouble) height); + } + + gimp_progress_update (1.0); + g_free (buffer); + g_free (ibuffer); + + g_object_unref (src_buffer); + g_object_unref (dest_buffer); + + gimp_drawable_merge_shadow (drawable_ID, TRUE); + gimp_drawable_update (drawable_ID, x1, y1, width, height); +} + +static void +query (void) +{ + static const GimpParamDef args[] = + { + { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" }, + { GIMP_PDB_IMAGE, "image", "Input image (unused)" }, + { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" } + }; + + gimp_install_procedure (PLUG_IN_PROC, + N_("Create an image of a textured sphere"), + "This plug-in can be used to create textured and/or " + "bumpmapped spheres, and uses a small lightweight " + "raytracer to perform the task with good quality", + "Vidar Madsen", + "Vidar Madsen", + "1999", + N_("Sphere _Designer..."), + "RGB*, GRAY*", + GIMP_PLUGIN, + G_N_ELEMENTS (args), 0, + args, NULL); + + gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Render"); +} + +static gboolean +sphere_main (gint32 drawable_ID) +{ + gimp_ui_init (PLUG_IN_BINARY, TRUE); + + img_stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, PREVIEWSIZE); + img = g_malloc0 (img_stride * PREVIEWSIZE); + + buffer = cairo_image_surface_create_for_data (img, CAIRO_FORMAT_RGB24, + PREVIEWSIZE, + PREVIEWSIZE, + img_stride); + + makewindow (); + + if (s.com.numtexture == 0) + { + /* Setup and use default list */ + sphere_response (NULL, RESPONSE_RESET, NULL); + } + else + { + /* Reuse the list from a previous invocation */ + rebuildlist (); + } + + gtk_main (); + + cairo_surface_destroy (buffer); + g_free (img); + + return do_run; +} + +static void +run (const gchar *name, + gint nparams, + const GimpParam *param, + gint *nreturn_vals, + GimpParam **return_vals) +{ + static GimpParam values[1]; + GimpRunMode run_mode; + gint32 drawable_ID; + GimpPDBStatusType status = GIMP_PDB_SUCCESS; + gint x, y, w, h; + + INIT_I18N (); + gegl_init (NULL, NULL); + + *nreturn_vals = 1; + *return_vals = values; + + values[0].type = GIMP_PDB_STATUS; + values[0].data.d_status = status; + + run_mode = param[0].data.d_int32; + drawable_ID = param[2].data.d_drawable; + + if (! gimp_drawable_mask_intersect (drawable_ID, &x, &y, &w, &h)) + { + g_message (_("Region selected for plug-in is empty")); + return; + } + + switch (run_mode) + { + case GIMP_RUN_INTERACTIVE: + s.com.numtexture = 0; + gimp_get_data (PLUG_IN_PROC, &s); + if (! sphere_main (drawable_ID)) + return; + break; + + case GIMP_RUN_WITH_LAST_VALS: + s.com.numtexture = 0; + gimp_get_data (PLUG_IN_PROC, &s); + if (s.com.numtexture == 0) + return; + break; + + case GIMP_RUN_NONINTERACTIVE: + default: + /* Not implemented yet... */ + return; + } + + gimp_set_data (PLUG_IN_PROC, &s, sizeof (s)); + + realrender (drawable_ID); + gimp_displays_flush (); + + values[0].data.d_status = status; +} + +MAIN () |