#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup(){

    ofEnableDepthTest();

    image.load("sunflower.png");

    gridStepX=gridStepY=5;

    numGridPointsX=image.getWidth()/gridStepX;
    numGridPointsY=image.getHeight()/gridStepY;

    for(int y =0;y<numGridPointsY;y++){
        for(int x =0;x<numGridPointsX;x++){
            ofPoint p=ofPoint(x*gridStepX,y*gridStepY,0);
            mesh.addVertex(p);
            mesh.addColor(ofColor::black);
        }
    }

    //setup triangles -1 perchè non costruisco il triangolo alla fine per on uscire
    for(int y =0;y<numGridPointsY-1;y++){
        for(int x =0;x<numGridPointsX-1;x++){
            int i1=x+y*numGridPointsX;
            int i2=x+1+y*numGridPointsX;
            int i3=x+(y+1)*numGridPointsX;
            int i4=x+1+(y+1)*numGridPointsX;

            mesh.addTriangle(i1,i2,i3);
            mesh.addTriangle(i2,i3,i4);

        }
    }
}

//--------------------------------------------------------------
void ofApp::update(){
    float time=ofGetElapsedTimef();
    for(int y =0;y<numGridPointsY;y++){
        for(int x =0;x<numGridPointsX;x++){
            int i=x+y*numGridPointsX;

           // ofSeedRandom(0);
            ofPoint p=mesh.getVertex(i);


            p.z = ofNoise(x*0.05,y*0.05,time)*100;


            mesh.setVertex(i,p);

        }
    }

}

//--------------------------------------------------------------
void ofApp::draw(){
    cam.begin();
    mesh.drawWireframe();
    //mesh.draw();
    cam.end();
}

//--------------------------------------------------------------
void ofApp::keyPressed(int key){

}

//--------------------------------------------------------------
void ofApp::keyReleased(int key){

}

//--------------------------------------------------------------
void ofApp::mouseMoved(int x, int y ){

}

//--------------------------------------------------------------
void ofApp::mouseDragged(int x, int y, int button){

}

//--------------------------------------------------------------
void ofApp::mousePressed(int x, int y, int button){

}

//--------------------------------------------------------------
void ofApp::mouseReleased(int x, int y, int button){

}

//--------------------------------------------------------------
void ofApp::mouseEntered(int x, int y){

}

//--------------------------------------------------------------
void ofApp::mouseExited(int x, int y){

}

//--------------------------------------------------------------
void ofApp::windowResized(int w, int h){

}

//--------------------------------------------------------------
void ofApp::gotMessage(ofMessage msg){

}

//--------------------------------------------------------------
void ofApp::dragEvent(ofDragInfo dragInfo){

}