package sample.web3d;

import static util.Static3D.*;
import static util.Generic3DUtil.*; 
import util.data.Pair;

// to avoid "Cannot create a generic array of type Pair<Double, double[][]>"
class Branch extends Pair<Double, double[][]> {
	public Branch(double d, double[][] mat) {
		super(d, mat);
	}
}

public class Tree3D {
	
	private static Branch[] branches = {
		new Branch(1,    scaleMatrix(rotateMatrix360(xAxis, PHYLLOTAXIS360), 0.95)),
		new Branch(0.5, scaleMatrix(rotateMatrix360(zAxis, 75), 0.5)),
//		new Branch(0.55, scaleMatrix(rotateMatrix360(zAxis, 75), 0.48))
	};
	
	public static void drawTree(int d, double x, double y, double z, double[][] mat) {
	    if (d<=0) return;
		
		double dx = mat[0][0];
		double dy = mat[1][0];
		double dz = mat[2][0];
		line(x, y, z, x + dx, y + dy, z + dz);
		
		for (Branch branch: branches) {
			double q = branch._1;
			drawTree(d-1, x + q * dx,  y + q * dy, z + q * dz, multipleMatrix(mat, branch._2));
		}
	}
	
	public static void main(String[] args) {
		double[][] initMatrix = scaleMatrix(copyMatrix(idMatrix), 20);
//		printf("<!--%n");
//		printMatrix(rotateMatrix(xAxis, PI/2));
//		printf("-->%n");
	    start();
	    
	    stroke(hsl360(120, 100, 50));
	    strokeWeight(5);
	    noFill();
	    translate(0, -100, 0);
	    rotateZ(PI/2);
	    drawTree(10 /* 再帰の深さ */, 0, 0, 0, initMatrix);
	    
	    finish();
	    return;
	}
}