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https://github.com/processing/processing4.git
synced 2026-06-16 04:26:26 +02:00
New images and code for Examples 2.0
This commit is contained in:
Casey Reas
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/**
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* Mixture Grid
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* modified from an example by Simon Greenwold.
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*
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* Display a 2D grid of boxes with three different kinds of lights.
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*/
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void setup() {
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size(640, 360, P3D);
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noStroke();
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}
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void draw() {
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defineLights();
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background(0);
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for (int x = 0; x <= width; x += 60) {
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for (int y = 0; y <= height; y += 60) {
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pushMatrix();
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translate(x, y);
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rotateY(map(mouseX, 0, width, 0, PI));
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rotateX(map(mouseY, 0, height, 0, PI));
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box(90);
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popMatrix();
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}
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}
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}
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void defineLights() {
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// Orange point light on the right
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pointLight(150, 100, 0, // Color
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200, -150, 0); // Position
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// Blue directional light from the left
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directionalLight(0, 102, 255, // Color
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1, 0, 0); // The x-, y-, z-axis direction
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// Yellow spotlight from the front
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spotLight(255, 255, 109, // Color
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0, 40, 200, // Position
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0, -0.5, -0.5, // Direction
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PI / 2, 2); // Angle, concentration
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}
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@@ -0,0 +1,82 @@
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/**
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* Noise Sphere
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* by David Pena.
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*
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* Uniform random distribution on the surface of a sphere.
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*/
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int cuantos = 4000;
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Pelo[] lista ;
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float[] z = new float[cuantos];
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float[] phi = new float[cuantos];
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float[] largos = new float[cuantos];
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float radio;
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float rx = 0;
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float ry =0;
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void setup() {
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size(640, 360, P3D);
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radio = height/3;
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lista = new Pelo[cuantos];
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for (int i=0; i<cuantos; i++) {
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lista[i] = new Pelo();
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}
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noiseDetail(3);
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}
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void draw() {
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background(0);
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translate(width/2, height/2);
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float rxp = ((mouseX-(width/2))*0.005);
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float ryp = ((mouseY-(height/2))*0.005);
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rx = (rx*0.9)+(rxp*0.1);
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ry = (ry*0.9)+(ryp*0.1);
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rotateY(rx);
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rotateX(ry);
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fill(0);
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noStroke();
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sphere(radio);
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for (int i = 0;i < cuantos; i++) {
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lista[i].dibujar();
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}
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}
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class Pelo
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{
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float z = random(-radio, radio);
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float phi = random(TWO_PI);
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float largo = random(1.15, 1.2);
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float theta = asin(z/radio);
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void dibujar() {
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float off = (noise(millis() * 0.0005, sin(phi))-0.5) * 0.3;
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float offb = (noise(millis() * 0.0007, sin(z) * 0.01)-0.5) * 0.3;
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float thetaff = theta+off;
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float phff = phi+offb;
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float x = radio * cos(theta) * cos(phi);
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float y = radio * cos(theta) * sin(phi);
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float z = radio * sin(theta);
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float msx= screenX(x, y, z);
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float msy= screenY(x, y, z);
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float xo = radio * cos(thetaff) * cos(phff);
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float yo = radio * cos(thetaff) * sin(phff);
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float zo = radio * sin(thetaff);
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float xb = xo * largo;
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float yb = yo * largo;
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float zb = zo * largo;
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beginShape(LINES);
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stroke(0);
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vertex(x, y, z);
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stroke(200, 150);
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vertex(xb, yb, zb);
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endShape();
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}
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}
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@@ -0,0 +1,67 @@
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class Cube {
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// Properties
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int w, h, d;
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int shiftX, shiftY, shiftZ;
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// Constructor
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Cube(int w, int h, int d, int shiftX, int shiftY, int shiftZ){
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this.w = w;
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this.h = h;
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this.d = d;
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this.shiftX = shiftX;
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this.shiftY = shiftY;
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this.shiftZ = shiftZ;
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}
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// Main cube drawing method, which looks
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// more confusing than it really is. It's
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// just a bunch of rectangles drawn for
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// each cube face
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void drawCube(){
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beginShape(QUADS);
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// Front face
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vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, h + shiftY, -d/2 + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ);
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// Back face
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vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(w + shiftX, h + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, d + shiftZ);
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// Left face
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vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ);
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// Right face
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vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(w + shiftX, h + shiftY, d + shiftZ);
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vertex(w + shiftX, h + shiftY, -d/2 + shiftZ);
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// Top face
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vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ);
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// Bottom face
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vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, h + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, h + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, d + shiftZ);
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endShape();
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// Add some rotation to each box for pizazz.
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rotateY(radians(1));
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rotateX(radians(1));
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rotateZ(radians(1));
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}
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}
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@@ -0,0 +1,61 @@
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/**
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* Space Junk
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* by Ira Greenberg (zoom suggestion by Danny Greenberg).
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*
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* Rotating cubes in space using a custom Cube class.
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* Color controlled by light sources. Move the mouse left
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* and right to zoom.
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*/
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// Used for oveall rotation
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float ang;
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// Cube count-lower/raise to test performance
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int limit = 500;
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// Array for all cubes
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Cube[]cubes = new Cube[limit];
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void setup() {
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size(640, 360, P3D);
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background(0);
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noStroke();
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// Instantiate cubes, passing in random vals for size and postion
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for (int i = 0; i< cubes.length; i++){
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cubes[i] = new Cube(int(random(-10, 10)), int(random(-10, 10)),
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int(random(-10, 10)), int(random(-140, 140)),
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int(random(-140, 140)), int(random(-140, 140)));
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}
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}
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void draw(){
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background(0);
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fill(200);
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// Set up some different colored lights
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pointLight(51, 102, 255, 65, 60, 100);
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pointLight(200, 40, 60, -65, -60, -150);
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// Raise overall light in scene
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ambientLight(70, 70, 10);
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// Center geometry in display windwow.
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// you can change 3rd argument ('0')
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// to move block group closer(+)/further(-)
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translate(width/2, height/2, -200 + mouseX * 0.65);
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// Rotate around y and x axes
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rotateY(radians(ang));
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rotateX(radians(ang));
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// Draw cubes
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for (int i = 0; i < cubes.length; i++){
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cubes[i].drawCube();
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}
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// Used in rotate function calls above
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ang += 0.2;
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}
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@@ -0,0 +1,174 @@
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/**
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* Texture Sphere
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* by Mike 'Flux' Chang (cleaned up by Aaron Koblin).
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* Based on code by Toxi.
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*
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* A 3D textured sphere with simple rotation control.
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* Note: Controls will be inverted when sphere is upside down.
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* Use an "arc ball" to deal with this appropriately.
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*/
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// The next line is needed if running in JavaScript Mode with Processing.js
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/* @pjs preload="world32k.jpg"; */
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PImage bg;
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PImage texmap;
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int sDetail = 35; // Sphere detail setting
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float rotationX = 0;
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float rotationY = 0;
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float velocityX = 0;
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float velocityY = 0;
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float globeRadius = 400;
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float pushBack = 0;
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float[] cx, cz, sphereX, sphereY, sphereZ;
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float sinLUT[];
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float cosLUT[];
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float SINCOS_PRECISION = 0.5;
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int SINCOS_LENGTH = int(360.0 / SINCOS_PRECISION);
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void setup() {
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size(640, 360, P3D);
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texmap = loadImage("world32k.jpg");
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initializeSphere(sDetail);
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}
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void draw() {
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background(0);
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renderGlobe();
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}
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void renderGlobe() {
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pushMatrix();
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translate(width * 0.33, height * 0.5, pushBack);
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pushMatrix();
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noFill();
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stroke(255,200);
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strokeWeight(2);
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smooth();
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popMatrix();
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lights();
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pushMatrix();
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rotateX( radians(-rotationX) );
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rotateY( radians(270 - rotationY) );
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fill(200);
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noStroke();
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textureMode(IMAGE);
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texturedSphere(globeRadius, texmap);
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popMatrix();
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popMatrix();
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rotationX += velocityX;
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rotationY += velocityY;
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velocityX *= 0.95;
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velocityY *= 0.95;
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// Implements mouse control (interaction will be inverse when sphere is upside down)
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if(mousePressed){
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velocityX += (mouseY-pmouseY) * 0.01;
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velocityY -= (mouseX-pmouseX) * 0.01;
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}
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}
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void initializeSphere(int res)
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{
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sinLUT = new float[SINCOS_LENGTH];
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cosLUT = new float[SINCOS_LENGTH];
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for (int i = 0; i < SINCOS_LENGTH; i++) {
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sinLUT[i] = (float) Math.sin(i * DEG_TO_RAD * SINCOS_PRECISION);
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cosLUT[i] = (float) Math.cos(i * DEG_TO_RAD * SINCOS_PRECISION);
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}
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float delta = (float)SINCOS_LENGTH/res;
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float[] cx = new float[res];
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float[] cz = new float[res];
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// Calc unit circle in XZ plane
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for (int i = 0; i < res; i++) {
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cx[i] = -cosLUT[(int) (i*delta) % SINCOS_LENGTH];
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cz[i] = sinLUT[(int) (i*delta) % SINCOS_LENGTH];
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}
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// Computing vertexlist vertexlist starts at south pole
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int vertCount = res * (res-1) + 2;
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int currVert = 0;
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// Re-init arrays to store vertices
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sphereX = new float[vertCount];
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sphereY = new float[vertCount];
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sphereZ = new float[vertCount];
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float angle_step = (SINCOS_LENGTH*0.5f)/res;
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float angle = angle_step;
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// Step along Y axis
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for (int i = 1; i < res; i++) {
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float curradius = sinLUT[(int) angle % SINCOS_LENGTH];
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float currY = -cosLUT[(int) angle % SINCOS_LENGTH];
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for (int j = 0; j < res; j++) {
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sphereX[currVert] = cx[j] * curradius;
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sphereY[currVert] = currY;
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sphereZ[currVert++] = cz[j] * curradius;
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}
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angle += angle_step;
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}
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sDetail = res;
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}
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// Generic routine to draw textured sphere
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void texturedSphere(float r, PImage t) {
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int v1,v11,v2;
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r = (r + 240 ) * 0.33;
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beginShape(TRIANGLE_STRIP);
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texture(t);
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float iu=(float)(t.width-1)/(sDetail);
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float iv=(float)(t.height-1)/(sDetail);
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float u=0,v=iv;
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for (int i = 0; i < sDetail; i++) {
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vertex(0, -r, 0,u,0);
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vertex(sphereX[i]*r, sphereY[i]*r, sphereZ[i]*r, u, v);
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u+=iu;
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}
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vertex(0, -r, 0,u,0);
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vertex(sphereX[0]*r, sphereY[0]*r, sphereZ[0]*r, u, v);
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endShape();
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// Middle rings
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int voff = 0;
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for(int i = 2; i < sDetail; i++) {
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v1=v11=voff;
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voff += sDetail;
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v2=voff;
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u=0;
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beginShape(TRIANGLE_STRIP);
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texture(t);
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for (int j = 0; j < sDetail; j++) {
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vertex(sphereX[v1]*r, sphereY[v1]*r, sphereZ[v1++]*r, u, v);
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vertex(sphereX[v2]*r, sphereY[v2]*r, sphereZ[v2++]*r, u, v+iv);
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u+=iu;
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}
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// Close each ring
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v1=v11;
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v2=voff;
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vertex(sphereX[v1]*r, sphereY[v1]*r, sphereZ[v1]*r, u, v);
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vertex(sphereX[v2]*r, sphereY[v2]*r, sphereZ[v2]*r, u, v+iv);
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endShape();
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v+=iv;
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}
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u=0;
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// Add the northern cap
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beginShape(TRIANGLE_STRIP);
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texture(t);
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for (int i = 0; i < sDetail; i++) {
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v2 = voff + i;
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vertex(sphereX[v2]*r, sphereY[v2]*r, sphereZ[v2]*r, u, v);
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vertex(0, r, 0,u,v+iv);
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u+=iu;
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}
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vertex(sphereX[voff]*r, sphereY[voff]*r, sphereZ[voff]*r, u, v);
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endShape();
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}
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