Why won't this work?
in
Programming Questions
•
2 years ago
I'm trying to create a simple Mandelbrot Set renderer, and it won't work- it compiles, and the rendering and zoom work, but they're not rendering the set. They're rendering something else:
I can't figure out what's wrong with my code. It all seems to check out. Help?
- //Mandelbrot Set
- float rR = 10; //real axis radius
- float iR = 10; //imaginary axis radius
- float rC = 0; //center of render on real axis
- float iC = 0; //center of render on imaginary axis
- int iterations = 20;
- float breakOff = 2;
- float zoomFactor = 2;
- void setup(){
- size(500,500);
- render();
- }
- void draw(){}
- void render(){
- for(int r = 0; r < width; r++){
- for(int i = 0; i < height; i++){
- //Implement the equation for each pixel
- Complex Z = new Complex(0,0);
- Complex C = new Complex(map(r,0,width,rC-(rR/2),rC+(rR/2)),map(i,0,height,iC-(iR/2),iC+(iR/2)));
- set(r,i,color(255));
- for(int n = 0; n <= iterations; n++){
- //Just like the equation
- Z.mult(Z);
- Z.add(C);
- if(Z.norm()>breakOff){
- set(r,i,color(map(n,0,iterations,0,255)));
- break;
- }
- }
- }
- }
- }
- void mousePressed(){
- rC = map(mouseX, 0, width, rC-(rR/2), rC+rR/2);
- iC = map(mouseY, 0, height, iC-(iR/2), iC+iR/2);
- if(mouseButton == RIGHT){
- rR *= zoomFactor;
- iR *= zoomFactor;
- }else if(mouseButton == LEFT){
- rR /= zoomFactor;
- iR /= zoomFactor;
- }
- render();
- }
- //Complex number class
- public class Complex{
- float re = 0;
- float im = 0;
- public Complex () {
- this.re = 0;
- this.im = 0;
- }
- public Complex(float rE, float iM) {
- this.re = rE;
- this.im = iM;
- }
- public void add(Complex op) {
- this.re = (this.re + op.re);
- this.im = (this.im + op.im);
- }
- //I think my multiplication function might be off...
- public void mult(Complex op) {
- this.re = (this.re * op.re - this.im * op.im);
- this.im = (this.re * op.im + this.im * op.re);
- }
- public float norm() {
- return sqrt(this.re * this.re + this.im * this.im);
- }
- }
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