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https://github.com/processing/processing4.git
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102 lines
2.4 KiB
XML
102 lines
2.4 KiB
XML
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
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<root>
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<name>vertex()</name>
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<category>Shape</category>
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<subcategory>Vertex</subcategory>
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<usage>Application & Web</usage>
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<example>
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<image>vertex_.gif</image>
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<code>
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beginShape(POINTS);
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vertex(30, 20);
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vertex(85, 20);
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vertex(85, 75);
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vertex(30, 75);
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endShape();
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</code>
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</example>
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<example>
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<image>vertex_2.gif</image>
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<code>
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noStroke();
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BImage a = loadImage("arch.jpg");
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beginShape();
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texture(a);
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// "arch.jpg" is 100x100 pixels in size so
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// the values 0 and 100 are used for the
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// parameters "u" and "v" to map it directly
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// to the vertex points
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vertex(10, 20, 0, 0);
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vertex(80, 5, 100, 0);
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vertex(95, 90, 100, 100);
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vertex(40, 95, 0, 100);
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endShape();
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</code>
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</example>
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<description>
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All shapes are constructed by connecting a series of vertices. <b>vertex()</b> is used to specify the vertex coordinates for points, lines, triangles, quads, and polygons and is used exclusively within the <b>beginShape()</b> and <b>endShape()</b> function. This function is also used to map a texture onto the geometry. The <b>texture()</b> function declares the texture to apply to the geometry and the <b>u</b> and <b>v</b> coordinates set define the mapping of this texture to the form. By default, the coordinates used for <b>u</b> and <b>v</b> are specified in relation to the image's size in pixels, but this relation can be changed with <b>textureMode()</b>.
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</description>
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<syntax>
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vertex(<c>x</c>, <c>y</c>);
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vertex(<c>x</c>, <c>y</c>, <c>z</c>);
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vertex(<c>x</c>, <c>y</c>, <c>u</c>, <c>v</c>);
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vertex(<c>x</c>, <c>y</c>, <c>z</c>, <c>u</c>, <c>v</c>);
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</syntax>
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<parameter>
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<label>x</label>
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<description>int or float: x-coordinate of the vertex</description>
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</parameter>
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<parameter>
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<label>y</label>
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<description>int or float: y-coordinate of the vertex</description>
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</parameter>
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<parameter>
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<label>z</label>
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<description>int or float: z-coordinate of the vertex</description>
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</parameter>
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<parameter>
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<label>u</label>
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<description>int or float: horizontal coordinate for the texture mapping</description>
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</parameter>
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<parameter>
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<label>v</label>
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<description>int or float: vertical coordinate for the texture mapping</description>
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</parameter>
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<returns>None</returns>
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<related>
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beginShape()
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endShape()
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bezierVertex()
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curveVertex()
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texture()
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</related>
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<availability>1.0</availability>
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<type>Function</type>
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<partof>Core</partof>
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</root>
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