#include "viewport.h"

//make viewport oversample

viewport::viewport()
{
    //ctor
}
viewport::viewport(int _w,int _h,int _ox,int _oy,int _num) {
	setup(_w,_h,_ox,_oy,_num);
}

void viewport::setup(int _w,int _h,int _ox,int _oy,int _num) {
	w=_w;
	h=_h;
	bw=w*oversample;
	bh=h*oversample;
	ox=_ox;
	oy=_oy;
	num=_num;
	rb1.allocate(bw,bh,GL_RGB);
	rb2.allocate(bw,bh,GL_RGB);
	seed=ofRandom(1.0f);
}

void viewport::drawport(vpcontrol &control){
		
		rb1.begin();

		//can be done with texture offset?

		int startx=((bw-(bw*control.fscale))/2)+control.xshift;
		while (startx>0) startx-=(bw*control.fscale);
		int starty=((bh-(bh*control.fscale))/2)+control.yshift;
		while (starty>0) starty-=(bh*control.fscale);
		
		for (int i=startx;i<bw*2;i+=(bw*control.fscale)) {
			for (int j=starty;j<bh*2;j+=(bh*control.fscale)) {
			    rb2.draw(i,j,bw*control.fscale,bh*control.fscale);
			}
		}

		if (control.fade>0){
			ofEnableAlphaBlending();
			ofSetColor(0,0,0,control.fade);
			ofRect(0,0,bw,bh);
			ofDisableAlphaBlending();
		}

		//do whatever with feedback

		//set draw colour from palette

		if (Palette.isLoaded()){
			ofSetColor(Palette.getBlend((ofGetElapsedTimef()*control.freq*0.0318)/seed));	
		}
		else {
			uint8_t f=(uint8_t)((sin((ofGetElapsedTimef()*control.freq)/seed)+1.0f)*127.50f);
			ofSetColor(f,f,f);
		}


		if (control.fill){
			ofRect(0,0,bw,bh);
		}

		ofSetLineWidth(control.thickness);

		if (!control.fillwave) {
			ofNoFill();
		}

		if(control.wave){
			if (h>w){
				ofBeginShape();
				for (int i = 0; i < bh; i++){
					ofVertex((bw/2) -(control.right[i+(num*bh)]*bw),i);
				}
				ofEndShape(false);
			}
			else {	
				ofBeginShape();
				for (int i = 0; i < bw; i++){
					ofVertex(i, (bh/2) -(control.right[i+(num*bw)]*bh) );
				}
				ofEndShape(false);
			}
		}
		
		ofFill();

		rb1.end();

		rb2.begin();
		ofSetColor(255,255,255);
		rb1.draw(0,0);
		rb2.end();

}
void viewport::draw(uint8_t b,float s){
			
	ofSetColor(b,b,b);
	rb2.draw(ox*s,oy*s,w*s,h*s);

}

viewport::~viewport()
{
    //dtor
}