<?xml version="1.0" encoding="UTF-8"?>

<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">

<_name>Parametric Curves</_name>

<id>org.inkscape.effect.param_curves</id>

<dependency type="executable" location="extensions">param_curves.py</dependency>

<dependency type="executable" location="extensions">inkex.py</dependency>

<param name="tab" type="notebook">

<page name="sampling" _gui-text="Range and Sampling">

<param name="t_start" type="float" min="-1000.0" max="1000.0" _gui-text="Start t-value:">0.0</param>

<param name="t_end" type="float" min="-1000.0" max="1000.0" _gui-text="End t-value:">1.0</param>

<param name="times2pi" type="boolean" _gui-text="Multiply t-range by 2*pi">true</param>

<param name="xleft" type="float" min="-1000.0" max="1000.0" _gui-text="X-value of rectangle's left:">-1.0</param>

<param name="xright" type="float" min="-1000.0" max="1000.0" _gui-text="X-value of rectangle's right:">1.0</param>

<param name="ybottom" type="float" min="-1000.0" max="1000.0" _gui-text="Y-value of rectangle's bottom:">-1.0</param>

<param name="ytop" type="float" min="-1000.0" max="1000.0" _gui-text="Y-value of rectangle's top:">1.0</param>

<param name="samples" type="int" min="2" max="1000" _gui-text="Samples:">30</param>

<param name="isoscale" type="boolean" _gui-text="Isotropic scaling">false</param>

<_param name="isoscaledesc" type="description">When set, Isotropic scaling uses smallest of width/xrange or height/yrange</_param>

</page>

<page name="use" _gui-text="Use">

<_param name="funcplotuse" type="description" xml:space="preserve">Select a rectangle before calling the extension, it will determine X and Y scales.

First derivatives are always determined numerically.</_param>

</page>

<page name="desc" _gui-text="Functions">

<_param name="pythonfunctions" type="description" xml:space="preserve">Standard Python math functions are available:

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).

The constants pi and e are also available.</_param>

</page>

</param>

<param name="fofx" type="string" _gui-text="X-Function:">cos(3*t)</param>

<param name="fofy" type="string" _gui-text="Y-Function:">sin(5*t)</param>

<param name="remove" type="boolean" _gui-text="Remove rectangle">true</param>

<param name="drawaxis" type="boolean" _gui-text="Draw Axes">false</param>

<effect>

<object-type>rect</object-type>

<effects-menu>

<submenu _name="Render"/>

</effects-menu>

</effect>

<script>

<command reldir="extensions" interpreter="python">param_curves.py</command>

</script>

</inkscape-extension>