import arsd.apng;

void main() {
	auto apng = new ApngAnimation(50, 50);

	auto frame = apng.addFrame(25, 25);
	frame.data[] = 255;

	frame = apng.addFrame(25, 25);
	frame.data[] = 255;
	frame.frameControlChunk.delay_num = 10;

	frame = apng.addFrame(25, 25);
	frame.data[] = 255;
	frame.frameControlChunk.x_offset = 25;
	frame.frameControlChunk.delay_num = 10;

	frame = apng.addFrame(25, 25);
	frame.data[] = 255;
	frame.frameControlChunk.y_offset = 25;
	frame.frameControlChunk.delay_num = 10;

	frame = apng.addFrame(25, 25);
	frame.data[] = 255;
	frame.frameControlChunk.x_offset = 25;
	frame.frameControlChunk.y_offset = 25;
	frame.frameControlChunk.delay_num = 10;


	writeApngToFile(apng, "/home/me/test.apng");
}

import arsd.simpledisplay;
import arsd.game;
import arsd.apng;

void main(string[] args) {
	import std.file;
	auto a = readApng(cast(ubyte[]) std.file.read(args[1]));

	auto window = create2dWindow("Animated PNG viewer", a.header.width, a.header.height);

	auto render = a.renderer();
	OpenGlTexture[] frames;
	int[] waits;
	foreach(frame; a.frames) {
		waits ~= render.nextFrame();
		// this would be the raw data for the frame
		//frames ~= new OpenGlTexture(frame.frameData.getAsTrueColorImage);
		// or the current rendered ersion
		frames ~= new OpenGlTexture(render.buffer);
	}

	int pos;
	int currentWait;

	void update() {
		currentWait += waits[pos];
		pos++;
		if(pos == frames.length)
			pos = 0;
	}

	window.redrawOpenGlScene = () {
		glClear(GL_COLOR_BUFFER_BIT);
		frames[pos].draw(0, 0);
	};

	auto tick = 50;
	window.eventLoop(tick, delegate() {
		currentWait -= tick;
		auto updateNeeded = currentWait <= 0;
		while(currentWait <= 0)
			update();
		if(updateNeeded)
			window.redrawOpenGlSceneNow();
	//},
	//(KeyEvent ev) {
	//if(ev.pressed)
	});

	// writeApngToFile(a, "/home/me/test.apng");
}