/* -*- C++ -*-
 * Copyright ©2008 Hugo Mills <hugo@carfax.org.uk>
 *
 * This software is distributed under the terms of the GNU GPL v3
 * For more information on the GPL, see the file COPYING or 
 * visit http://www.gnu.org/
 *
 * This software is distributed without warranty
 */

#include "output_canvas.h"

extern "C" PluginInfo* getmodules(int i)
{
	if(i==0)
	{
		PluginInfo_Output* pi = new PluginInfo_Output();

		pi->name = "Output to Canvas";
		pi->author = "Hugo Mills";
		pi->copyright = " ©2008 Hugo Mills";
		pi->version = 0x00900;
		pi->parser = Output_Canvas::parser;
		return pi;
	}
	else
		return NULL;
}

Output* Output_Canvas::parser(
	ConfigLexer* lex,
	const std::string& type,
	const std::string& subtype
	)
{
	return NULL; // For internal use only -- cannot be used externally
}

Output_Canvas::Output_Canvas(int wid, int hgt)
	: Output(wid, hgt),
	  canvas(NULL)
{
	canvas = new unsigned char[wid*hgt*3];
}

Output_Canvas::~Output_Canvas()
{
	delete[] canvas;
}

void Output_Canvas::setpixel(const ivec2& pos, int r, int g, int b)
{
	if(pos[0] < 0 || pos[0] >= xmax || pos[1] < 0 || pos[1] >= ymax)
		return;
	int offset = (pos[0] + pos[1] * xmax) * 3;
	canvas[offset] = r;
	canvas[offset+1] = g;
	canvas[offset+2] = b;
}

void Output_Canvas::getpixel(ivec3& rgb, const ivec2& pos) const
{
	if(pos[0] < 0 || pos[0] >= xmax || pos[1] < 0 || pos[1] >= ymax)
	{
		rgb[0] = 0;
		rgb[1] = 0;
		rgb[2] = 0;
		return;
	}
	int offset = (pos[0] + pos[1] * xmax) * 3;
	rgb[0] = canvas[offset];
	rgb[1] = canvas[offset+1];
	rgb[2] = canvas[offset+2];
}