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example 4
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‎hybrid-programming/example4/example4.py‎

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import py5
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torus = None
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def setup():
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global torus
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py5.size(500, 500, py5.P3D)
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py5.smooth(4)
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torus = py5.utils.createTorus(200, 25, 20, 40)
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py5.stroke(0)
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py5.stroke_weight(3)
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py5.fill(255)
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def draw():
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py5.background(128)
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py5.translate(py5.width / 2, py5.height / 2, 0)
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py5.shape(torus)
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py5.run_sketch()

‎hybrid-programming/example4/java/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>py5</groupId>
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<artifactId>py5-hybrid-programming-example4</artifactId>
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<version>0.1</version>
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<name>py5-hybrid-programming-example4</name>
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<url>https://py5coding.org/</url>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>17</maven.compiler.source>
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<maven.compiler.target>17</maven.compiler.target>
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<jarlocation>${env.CONDA_PREFIX}/lib/python3.10/site-packages/py5/jars</jarlocation>
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</properties>
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<dependencies>
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<dependency>
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<groupId>py5</groupId>
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<artifactId>py5-processing4</artifactId>
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<version>0.9.0.dev0</version>
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<scope>system</scope>
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<systemPath>${jarlocation}/core.jar</systemPath>
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</dependency>
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<dependency>
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<groupId>py5</groupId>
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<artifactId>py5-jogl</artifactId>
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<version>0.9.0.dev0</version>
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<scope>system</scope>
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<systemPath>${jarlocation}/jogl-all.jar</systemPath>
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</dependency>
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<dependency>
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<groupId>py5</groupId>
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<artifactId>py5</artifactId>
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<version>0.9.0.dev0</version>
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<scope>system</scope>
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<systemPath>${jarlocation}/py5.jar</systemPath>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-dependency-plugin</artifactId>
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<version>3.2.0</version>
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<executions>
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<execution>
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<id>copy</id>
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<phase>package</phase>
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<goals>
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<goal>copy</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<artifactItems>
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<artifactItem>
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<groupId>py5</groupId>
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<artifactId>py5-hybrid-programming-example4</artifactId>
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<version>0.1</version>
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<type>jar</type>
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<overWrite>true</overWrite>
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<outputDirectory>${project.basedir}/../jars</outputDirectory>
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<destFileName>py5-hybrid-programming-example4.jar</destFileName>
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</artifactItem>
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</artifactItems>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎hybrid-programming/example4/java/src/main/java/py5utils/Py5Utilities.java‎

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package py5utils;
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import processing.core.PShape;
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import py5.core.Sketch;
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public class Py5Utilities {
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protected Sketch sketch;
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public Py5Utilities(Sketch sketch) {
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// This constructor is called before the sketch starts running. DO NOT use
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// Processing methods here, as they may not work correctly.
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this.sketch = sketch;
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}
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public PShape createTorus(float radius, float tube, int radialSegments, int tubularSegments) {
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// Torus algorithm adapted from Three.js (https://threejs.org/).
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// https://github.com/mrdoob/three.js/blob/dev/src/geometries/TorusGeometry.js
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float vertices[][] = new float[(radialSegments + 1) * (tubularSegments + 1)][3];
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for (int i = 0; i <= radialSegments; i++) {
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for (int j = 0; j <= tubularSegments; j++) {
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float theta = j * Sketch.TWO_PI / tubularSegments;
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float phi = i * Sketch.TWO_PI / radialSegments;
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vertices[i * (tubularSegments + 1) + j][0] = (radius + tube * Sketch.cos(phi)) * Sketch.cos(theta);
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vertices[i * (tubularSegments + 1) + j][1] = (radius + tube * Sketch.cos(phi)) * Sketch.sin(theta);
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vertices[i * (tubularSegments + 1) + j][2] = tube * Sketch.sin(phi);
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}
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}
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PShape torus = sketch.createShape();
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torus.beginShape(Sketch.QUADS);
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for (int i = 1; i <= radialSegments; i++) {
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for (int j = 1; j <= tubularSegments; j++) {
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int a = (tubularSegments + 1) * i + j - 1;
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int b = (tubularSegments + 1) * (i - 1) + j - 1;
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int c = (tubularSegments + 1) * (i - 1) + j;
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int d = (tubularSegments + 1) * i + j;
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torus.vertex(vertices[a][0], vertices[a][1], vertices[a][2]);
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torus.vertex(vertices[b][0], vertices[b][1], vertices[b][2]);
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torus.vertex(vertices[c][0], vertices[c][1], vertices[c][2]);
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torus.vertex(vertices[d][0], vertices[d][1], vertices[d][2]);
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}
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}
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torus.endShape();
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return torus;
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}
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}

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