#include "ofApp.h"

void ofApp::setup() {
	ofSetVerticalSync(true);
	int rings = 32, resolution = 32;
	float length = 256, maxRadius = 128;
	for(int i = 0; i < rings; i++) {
		float radius = ofNoise(i / 4.) * maxRadius;
		ofVec3f offset(0, 0, ofMap(i, 0, rings, -length, length) / 2);
		for(int j = 0; j < resolution; j++) {
			float theta = ofMap(j, 0, resolution, 0, 360);
			ofVec2f cur(radius, 0);
			cur.rotate(theta);
			mesh.addVertex(offset + cur);
			mesh.addColor(ofColor((i * j) % 2 == 0 ? 255 : 0));
		}
	}
	
	for(int i = 0; i < rings - 1; i++) {
		for(int j = 0; j < resolution; j++) {
			int sw = i * resolution + j, se = sw + 1;
			if(j + 1 == resolution) {
				se -= resolution;
			}
			int nw = sw + resolution, ne = se + resolution;
			mesh.addTriangle(sw, se, nw);
			mesh.addTriangle(nw, se, ne);
		}
	}
	
	mesh.setMode(OF_PRIMITIVE_TRIANGLES);
}

void ofApp::update() {
	
}

void ofApp::draw() {
	ofBackground(0);
	cam.begin();
	glEnable(GL_DEPTH_TEST);
	ofSetColor(255);
	ofRotateY(90);
	mesh.draw();
	cam.end();
}