www.pudn.com > simpleraytracer_v1_0.zip > graphics2d.h

/*===================================================================== 
Code By Nicholas Chapman. 
 
  nickamy@paradise.net.nz 
 
You may use this code for any non-commercial project, 
as long as you do not remove this description. 
 
You may *not* use this code for any commercial project. 
=====================================================================*/ 
#ifndef __GRAPHICS2D_H__ 
#define __GRAPHICS2D_H__ 
 
/* 
interface for something that can draw 2d graphics 
*/ 
 
#include "../maths/vec2.h" 
#include "../maths/vec3.h" 
#include  
 
 
 
class Graphics2d 
{ 
public: 
	virtual ~Graphics2d(){} 
 
	virtual void startDrawing(){} 
	virtual void finishDrawing(){} 
 
	virtual int getWidth() const = 0; 
	virtual int getHeight() const = 0; 
 
 
	virtual void drawPixel(const Vec2& pos, const Vec3& colour) = 0; 
	virtual void drawPixel(int xpos, int ypos, const Vec3& colour) 
	{ 
		drawPixel(Vec2(xpos, ypos), colour); 
	} 
	virtual void drawPixel(int xpos, int ypos, unsigned char r, unsigned char g, unsigned char b) 
	{ 
		drawPixel(Vec2(xpos, ypos), Vec3((float)r / 255, (float)g / 255, (float)b / 255)); 
	} 
 
	virtual void drawRect(const Vec2& pos, int width, int height, const Vec3& colour) 
	{ 
		const int endx = pos.x + width; 
		const float endy = pos.y + height; 
		 
		//----------------------------------------------------------------- 
		//draw vertical lines 
		//----------------------------------------------------------------- 
		for(int x=pos.x; x