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Diffstat (limited to 'share/extensions/draw_from_triangle.inx')
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1 files changed, 75 insertions, 0 deletions
diff --git a/share/extensions/draw_from_triangle.inx b/share/extensions/draw_from_triangle.inx new file mode 100644 index 0000000..116e3f5 --- /dev/null +++ b/share/extensions/draw_from_triangle.inx @@ -0,0 +1,75 @@ +<?xml version="1.0" encoding="UTF-8"?> +<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension"> + <name>Draw From Triangle</name> + <id>org.inkscape.render.draw_from_triangle</id> + <param name="tab" type="notebook"> + <page name="common1" gui-text="Common Objects"> + <param name="circumcircle" type="bool" gui-text="Circumcircle">false</param> + <param name="circumcentre" type="bool" gui-text="Circumcentre">false</param> + <param name="incircle" type="bool" gui-text="Incircle">false</param> + <param name="incentre" type="bool" gui-text="Incentre">false</param> + <param name="contact_tri" type="bool" gui-text="Contact Triangle">false</param> + <param name="excircles" type="bool" gui-text="Excircles">false</param> + <param name="excentres" type="bool" gui-text="Excentres">false</param> + <param name="extouch_tri" type="bool" gui-text="Extouch Triangle">false</param> + <param name="excentral_tri" type="bool" gui-text="Excentral Triangle">false</param> + <param name="orthocentre" type="bool" gui-text="Orthocentre">false</param> + <param name="orthic_tri" type="bool" gui-text="Orthic Triangle">false</param> + <param name="altitudes" type="bool" gui-text="Altitudes">false</param> + <param name="anglebisectors" type="bool" gui-text="Angle Bisectors">false</param> + <param name="centroid" type="bool" gui-text="Centroid">false</param> + <param name="ninepointcentre" type="bool" gui-text="Nine-Point Centre">false</param> + <param name="ninepointcircle" type="bool" gui-text="Nine-Point Circle">false</param> + <param name="symmedians" type="bool" gui-text="Symmedians">false</param> + <param name="sym_point" type="bool" gui-text="Symmedian Point">false</param> + <param name="sym_tri" type="bool" gui-text="Symmedial Triangle">false</param> + <param name="gergonne_pt" type="bool" gui-text="Gergonne Point">false</param> + <param name="nagel_pt" type="bool" gui-text="Nagel Point">false</param> + </page> + <page name="Custom" gui-text="Custom Points and Options"> + <param name="mode" type="optiongroup" appearance="combo" gui-text="Custom Point Specified By:"> + <option value="trilin">Trilinear Coordinates</option> + <option value="tcf">Triangle Function</option> + </param> + <param name="cust_str" type="string" gui-text="Point At:">cos(a_a):cos(a_b):cos(a_c)</param> + <param name="cust_pt" type="bool" gui-text="Draw Marker At This Point">false</param> + <param name="cust_radius" type="bool" gui-text="Draw Circle Around This Point">false</param> + <param name="radius" type="string" gui-text="Radius (px):">s_a*s_b*s_c/(4*area)</param> + <param name="isogonal_conj" type="bool" gui-text="Draw Isogonal Conjugate">false</param> + <param name="isotomic_conj" type="bool" gui-text="Draw Isotomic Conjugate">false</param> + </page> + <page name="Help" gui-text="Help"> + <label xml:space="preserve">This extension draws constructions about a triangle defined by the first 3 nodes of a selected path. You may select one of preset objects or create your own ones. + +All units are the Inkscape's pixel unit. Angles are all in radians. +You can specify a point by trilinear coordinates or by a triangle centre function. +Enter as functions of the side length or angles. +Trilinear elements should be separated by a colon: ':'. +Side lengths are represented as 's_a', 's_b' and 's_c'. +Angles corresponding to these are 'a_a', 'a_b', and 'a_c'. +You can also use the semi-perimeter and area of the triangle as constants. Write 'area' or 'semiperim' for these. + +You can use any standard Python math function: +ceil(x); fabs(x); floor(x); fmod(x,y); frexp(x); ldexp(x,i); +modf(x); exp(x); log(x [, base]); log10(x); pow(x,y); sqrt(x); +acos(x); asin(x); atan(x); atan2(y,x); hypot(x,y); +cos(x); sin(x); tan(x); degrees(x); radians(x); +cosh(x); sinh(x); tanh(x) + +Also available are the inverse trigonometric functions: +sec(x); csc(x); cot(x) + +You can specify the radius of a circle around a custom point using a formula, which may also contain the side lengths, angles, etc. You can also plot the isogonal and isotomic conjugate of the point. Be aware that this may cause a divide-by-zero error for certain points. + </label> + </page> + </param> + <effect> + <object-type>all</object-type> + <effects-menu> + <submenu name="Render"/> + </effects-menu> + </effect> + <script> + <command location="inx" interpreter="python">draw_from_triangle.py</command> + </script> +</inkscape-extension> |