#include "textures.h"

void program_close(void)
{
	exit(EXIT_SUCCESS);
}

void draw_tile(BITMAP *bmp, int xsize, int ysize, 
		int blend_width, int blend_from, int blend_to,
		double red, double green, double blue,
		bool border)
{
	int i, dark, colour;
	for(i = 0; i < xsize * ysize; i++)
	{
		int x, y;
		int xdist, ydist;
		x = i % xsize;
		y = i / xsize;
		xdist = (x > xsize / 2) ? abs(x - xsize) : x;
		ydist = (y > ysize / 2) ? abs(y - ysize) : y;
		if(border && (!xdist || !ydist))
			colour = makecol(0, 0, 0);
		else
		{
			if(xdist < ydist)
				dark = blend_width - xdist;
			else
				dark = blend_width - ydist;
			if(dark < 0)
				dark = 0;
			dark *= (blend_from - blend_to) / blend_width;
			colour = blend_from - dark;
			colour = makecol(red * colour, green * colour, blue * colour);
		}
		putpixel(bmp, x, y, colour);
	}
}