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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:24:48 +0000 |
commit | cca66b9ec4e494c1d919bff0f71a820d8afab1fa (patch) | |
tree | 146f39ded1c938019e1ed42d30923c2ac9e86789 /src/object/box3d-side.cpp | |
parent | Initial commit. (diff) | |
download | inkscape-upstream.tar.xz inkscape-upstream.zip |
Adding upstream version 1.2.2.upstream/1.2.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/object/box3d-side.cpp | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/src/object/box3d-side.cpp b/src/object/box3d-side.cpp new file mode 100644 index 0000000..f79279f --- /dev/null +++ b/src/object/box3d-side.cpp @@ -0,0 +1,274 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * 3D box face implementation + * + * Authors: + * Maximilian Albert <Anhalter42@gmx.de> + * Abhishek Sharma + * Jon A. Cruz <jon@joncruz.org> + * + * Copyright (C) 2007 Authors + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#include "box3d-side.h" +#include "document.h" +#include "xml/document.h" +#include "xml/repr.h" +#include "display/curve.h" +#include "svg/svg.h" +#include "attributes.h" +#include "inkscape.h" +#include "object/persp3d.h" +#include "object/persp3d-reference.h" +#include "object/box3d.h" +#include "ui/tools/box3d-tool.h" +#include "desktop-style.h" + +static void box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]); + +Box3DSide::Box3DSide() : SPPolygon() { + this->dir1 = Box3D::NONE; + this->dir2 = Box3D::NONE; + this->front_or_rear = Box3D::FRONT; +} + +Box3DSide::~Box3DSide() = default; + +void Box3DSide::build(SPDocument * document, Inkscape::XML::Node * repr) { + SPPolygon::build(document, repr); + + this->readAttr(SPAttr::INKSCAPE_BOX3D_SIDE_TYPE); +} + + +Inkscape::XML::Node* Box3DSide::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) { + if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) { + // this is where we end up when saving as plain SVG (also in other circumstances?) + // thus we don' set "sodipodi:type" so that the box is only saved as an ordinary svg:path + repr = xml_doc->createElement("svg:path"); + } + + if (flags & SP_OBJECT_WRITE_EXT) { + repr->setAttributeInt("inkscape:box3dsidetype", this->dir1 ^ this->dir2 ^ this->front_or_rear); + } + + this->set_shape(); + + /* Duplicate the path */ + SPCurve const *curve = this->_curve.get(); + + //Nulls might be possible if this called iteratively + if ( !curve ) { + return nullptr; + } + + repr->setAttribute("d", sp_svg_write_path(curve->get_pathvector())); + + SPPolygon::write(xml_doc, repr, flags); + + return repr; +} + +void Box3DSide::set(SPAttr key, const gchar* value) { + // TODO: In case the box was recreated (by undo, e.g.) we need to recreate the path + // (along with other info?) from the parent box. + + /* fixme: we should really collect updates */ + switch (key) { + case SPAttr::INKSCAPE_BOX3D_SIDE_TYPE: + if (value) { + guint desc = atoi (value); + + if (!Box3D::is_face_id(desc)) { + g_print ("desc is not a face id: =%s=\n", value); + } + + g_return_if_fail (Box3D::is_face_id (desc)); + + Box3D::Axis plane = (Box3D::Axis) (desc & 0x7); + plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane)); + this->dir1 = Box3D::extract_first_axis_direction(plane); + this->dir2 = Box3D::extract_second_axis_direction(plane); + this->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8); + + this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); + } + break; + default: + SPPolygon::set(key, value); + break; + } +} + +void Box3DSide::update(SPCtx* ctx, guint flags) { + if (flags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG | SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) { + flags &= ~SP_OBJECT_USER_MODIFIED_FLAG_B; // since we change the description, it's not a "just translation" anymore + } + + if (flags & (SP_OBJECT_MODIFIED_FLAG | + SP_OBJECT_STYLE_MODIFIED_FLAG | + SP_OBJECT_VIEWPORT_MODIFIED_FLAG)) { + + this->set_shape(); + } + + SPPolygon::update(ctx, flags); +} + +/* Create a new Box3DSide and append it to the parent box */ +Box3DSide * Box3DSide::createBox3DSide(SPBox3D *box) +{ + Box3DSide *box3d_side = nullptr; + Inkscape::XML::Document *xml_doc = box->document->getReprDoc();; + Inkscape::XML::Node *repr_side = xml_doc->createElement("svg:path"); + repr_side->setAttribute("sodipodi:type", "inkscape:box3dside"); + box3d_side = static_cast<Box3DSide *>(box->appendChildRepr(repr_side)); + return box3d_side; +} + +/* + * Function which return the type attribute for Box3D. + * Acts as a replacement for directly accessing the XML Tree directly. + */ +int Box3DSide::getFaceId() +{ + return this->getIntAttribute("inkscape:box3dsidetype", -1); +} + +void +Box3DSide::position_set () { + this->set_shape(); + + // This call is responsible for live update of the sides during the initial drag + this->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); +} + +void Box3DSide::set_shape() { + if (!this->document->getRoot()) { + // avoid a warning caused by sp_document_height() (which is called from sp_item_i2d_affine() below) + // when reading a file containing 3D boxes + return; + } + + SPObject *parent = this->parent; + + SPBox3D *box = dynamic_cast<SPBox3D *>(parent); + if (!box) { + g_warning("Parent of 3D box side is not a 3D box.\n"); + return; + } + + Persp3D *persp = this->perspective(); + + if (!persp) { + return; + } + + // TODO: Draw the correct quadrangle here + // To do this, determine the perspective of the box, the orientation of the side (e.g., XY-FRONT) + // compute the coordinates of the corners in P^3, project them onto the canvas, and draw the + // resulting path. + + unsigned int corners[4]; + box3d_side_compute_corner_ids(this, corners); + + auto c = std::make_unique<SPCurve>(); + + if (!box->get_corner_screen(corners[0]).isFinite() || + !box->get_corner_screen(corners[1]).isFinite() || + !box->get_corner_screen(corners[2]).isFinite() || + !box->get_corner_screen(corners[3]).isFinite() ) + { + g_warning ("Trying to draw a 3D box side with invalid coordinates.\n"); + return; + } + + c->moveto(box->get_corner_screen(corners[0])); + c->lineto(box->get_corner_screen(corners[1])); + c->lineto(box->get_corner_screen(corners[2])); + c->lineto(box->get_corner_screen(corners[3])); + c->closepath(); + + /* Reset the shape's curve to the "original_curve" + * This is very important for LPEs to work properly! (the bbox might be recalculated depending on the curve in shape)*/ + + SPCurve const *before = curveBeforeLPE(); + if (before && before->get_pathvector() != c->get_pathvector()) { + setCurveBeforeLPE(std::move(c)); + sp_lpe_item_update_patheffect(this, true, false); + return; + } + + if (hasPathEffectOnClipOrMaskRecursive(this)) { + setCurveBeforeLPE(std::move(c)); + return; + } + + // This happends on undo, fix bug:#1791784 + setCurveInsync(std::move(c)); +} + +Glib::ustring Box3DSide::axes_string() const +{ + Glib::ustring result(Box3D::string_from_axes((Box3D::Axis) (this->dir1 ^ this->dir2))); + + switch ((Box3D::Axis) (this->dir1 ^ this->dir2)) { + case Box3D::XY: + result += ((this->front_or_rear == Box3D::FRONT) ? "front" : "rear"); + break; + + case Box3D::XZ: + result += ((this->front_or_rear == Box3D::FRONT) ? "top" : "bottom"); + break; + + case Box3D::YZ: + result += ((this->front_or_rear == Box3D::FRONT) ? "right" : "left"); + break; + + default: + break; + } + + return result; +} + +static void +box3d_side_compute_corner_ids(Box3DSide *side, unsigned int corners[4]) { + Box3D::Axis orth = Box3D::third_axis_direction (side->dir1, side->dir2); + + corners[0] = (side->front_or_rear ? orth : 0); + corners[1] = corners[0] ^ side->dir1; + corners[2] = corners[0] ^ side->dir1 ^ side->dir2; + corners[3] = corners[0] ^ side->dir2; +} + +Persp3D * +Box3DSide::perspective() const { + SPBox3D *box = dynamic_cast<SPBox3D *>(this->parent); + return box ? box->persp_ref->getObject() : nullptr; +} + +Inkscape::XML::Node *Box3DSide::convert_to_path() const { + // TODO: Copy over all important attributes (see sp_selected_item_to_curved_repr() for an example) + SPDocument *doc = this->document; + Inkscape::XML::Document *xml_doc = doc->getReprDoc(); + + Inkscape::XML::Node *repr = xml_doc->createElement("svg:path"); + repr->setAttribute("d", this->getAttribute("d")); + repr->setAttribute("style", this->getAttribute("style")); + + return repr; +} + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |