• fullscreen
• Complex3D.pde
• ```/**
* PDF Complex
* by Marius Watz (workshop.evolutionzone.com).
*
* Example using PDF to output complex 3D geometry for print.
* Press "s" to save a PDF.
*/

import processing.opengl.*;
import processing.pdf.*;

// Trig lookup tables borrowed from Toxi. Cryptic but effective
float sinLUT[];
float cosLUT[];
float SINCOS_PRECISION=1.0;
int SINCOS_LENGTH= int((360.0/SINCOS_PRECISION));

// System data
boolean dosave=false;
int num;
float pt[];
int style[];

void setup() {
size(640, 480, P3D);
frameRate(24);
background(255);

smooth();

// Fill the tables
sinLUT=new float[SINCOS_LENGTH];
cosLUT=new float[SINCOS_LENGTH];
for (int i = 0; i < SINCOS_LENGTH; i++) {
}

num = 150;
pt = new float[6*num]; // rotx, roty, deg, rad, w, speed
style = new int[2*num]; // color, render style

// Set up arc shapes
int index=0;
float prob;
for (int i=0; i<num; i++) {
pt[index++] = random(PI*2); // Random X axis rotation
pt[index++] = random(PI*2); // Random Y axis rotation

pt[index++] = random(60,80); // Short to quarter-circle arcs
if(random(100)>90) pt[index]=(int)random(8,27)*10;

pt[index++] = int(random(2,50)*5); // Radius. Space them out nicely

pt[index++] = random(4,32); // Width of band
if(random(100)>90) pt[index]=random(40,60); // Width of band

pt[index++] = radians(random(5,30))/5; // Speed of rotation

// get colors
prob = random(100);
if(prob<30) style[i*2]=colorBlended(random(1), 255,0,100, 255,0,0, 210);
else if(prob<70) style[i*2]=colorBlended(random(1), 0,153,255, 170,225,255, 210);
else if(prob<90) style[i*2]=colorBlended(random(1), 200,255,0, 150,255,0, 210);
else style[i*2]=color(255,255,255, 220);

if(prob<50) style[i*2]=colorBlended(random(1), 200,255,0, 50,120,0, 210);
else if(prob<90) style[i*2]=colorBlended(random(1), 255,100,0, 255,255,0, 210);
else style[i*2]=color(255,255,255, 220);

style[i*2+1]=(int)(random(100))%3;
}
}

void draw() {

// Uncomment to get PDF saving
/*
if(dosave) {
// set up PGraphicsPDF for use with beginRaw()
PGraphicsPDF pdf = (PGraphicsPDF)beginRaw(PDF, "pdf_complex_out.pdf");

// set default Illustrator stroke styles and paint background rect.
pdf.strokeJoin(MITER);
pdf.strokeCap(SQUARE);
pdf.fill(0);
pdf.noStroke();
pdf.rect(0,0, width,height);
}*/

background(0);

int index=0;
translate(width/2,height/2,0);
rotateX(PI/6);
rotateY(PI/6);

for (int i=0; i<num; i++) {
pushMatrix();

rotateX(pt[index++]);
rotateY(pt[index++]);

if(style[i*2+1]==0) {
stroke(style[i*2]);
noFill();
strokeWeight(1);
arcLine(0,0, pt[index++],pt[index++],pt[index++]);
}
else if(style[i*2+1]==1) {
fill(style[i*2]);
noStroke();
arcLineBars(0,0, pt[index++],pt[index++],pt[index++]);
}
else {
fill(style[i*2]);
noStroke();
arc(0,0, pt[index++],pt[index++],pt[index++]);
}

// increase rotation
pt[index-5]+=pt[index]/10;
pt[index-4]+=pt[index++]/20;

popMatrix();
}

// Uncomment to get PDF saving
/*
if(dosave) {
endRaw();
dosave=false;
}
*/
}

// Get blend of two colors
public int colorBlended(float fract,
float r, float g, float b,
float r2, float g2, float b2, float a) {

r2 = (r2 - r);
g2 = (g2 - g);
b2 = (b2 - b);
return color(r + r2 * fract, g + g2 * fract, b + b2 * fract, a);
}

// Draw arc line
public void arcLine(float x,float y,float deg,float rad,float w) {
int a=(int)(min (deg/SINCOS_PRECISION,SINCOS_LENGTH-1));
int numlines=(int)(w/2);

for (int j=0; j<numlines; j++) {
beginShape();
for (int i=0; i<a; i++) {
}
endShape();
}
}

// Draw arc line with bars
public void arcLineBars(float x,float y,float deg,float rad,float w) {
int a = int((min (deg/SINCOS_PRECISION,SINCOS_LENGTH-1)));
a /= 4;

for (int i=0; i<a; i+=4) {
}
endShape();
}

// Draw solid arc
public void arc(float x,float y,float deg,float rad,float w) {
int a = int(min (deg/SINCOS_PRECISION,SINCOS_LENGTH-1));
for (int i = 0; i < a; i++) {
}
endShape();
}

void keyPressed() {
if (key == 's') {
dosave=true;
}
}

void mouseReleased() {
background(255);
}
```

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