software-Rendering/DrawElement.h at master · Tianji95/software-Rendering · GitHub

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#pragma once
#ifndef _DRAWELEMENT_H_
#define _DRAWELEMENT_H_
#include<Windows.h>
#include"Transform.h"
#include"MyMath.h"

#define WINDOW_WIDTH 800
#define WINDOW_HEIGHT 600
#define TEXTURE_MODE 4
#define COLOR_MODE 2
#define WINDOWS_CLASS_NAME "DrawElement"
#define PI 3.1415926536

class Scanline {
public:
	Scanline();
	~Scanline();
	int y;
	double x;
	double width;
	point leftPoint, rightPoint;
	point stepPoint;
	vect oriLeftVect, oriRightVect;
	vect oriStepVect;
};
class Trapezoid {
public:
	Trapezoid();
	~Trapezoid();
	double top;
	double bottom;
	point left1, left2;
	point right1, right2;
	vect oriLeft1, oriLeft2;
	vect oriRight1, oriRight2;
};

class PixelOutput {
public:
	PixelOutput();
	~PixelOutput();
	vect normal;
	vect color;
	vect originPos;
};


class DrawElement {
public:

	DrawElement();
	~DrawElement();
	HRESULT initDevice();
	void clearBuffer();
	void destoryDevice();
	static LRESULT CALLBACK wndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);

	void drawTriangle(point* v1, point* v2, point*v3);
	int divideTriangle(point* finalV1, point* finalV2, point* finalV3, Trapezoid* trape1, Trapezoid* trape2, vect* oriV1, vect* oriV2, vect* oriV3);
	void randerTriangle(Trapezoid* trape);
	void initScanLine(Scanline *scline, int yPos, Trapezoid* trape);
	void drawScanLine(Scanline *scline);
	void updateScene();
	void loadTexture(char* filename);
	void getTextureColor(vect* out, point* nowPoint);
	void drawDeferred();


	UINT renderMode;
	Transform transform;//矩阵变换
	vect lightDiffuse;//
	vect lightSpecular;
	vect lightAmbient;
	vect lightPos;
	vect cameraPosition;
	vect cameraTarget;
	vect cameraUp;
	HDC hMemDC;//一个兼容设备的设备描述句柄
	HBITMAP hBITMAP;//一个位图句柄
	HDC hdc;//windows设备描述句柄

	LARGE_INTEGER startTick = {};
	LARGE_INTEGER endTick = {};
	LARGE_INTEGER frequency_ = {};
	FLOAT fps_ = 60.0f;
	bool isDeferred = false;
private:
	float ks = 1;//高光系数
	float kd = 1;//漫反射光系数
	float ka = 1;//环境光系数
	float ke = 0.1f; //自发射光系数
	int shininess = 3;
	int textureWidth;
	int textureHeight;
	int textureChannal;
	HINSTANCE hinstSelf;

	HWND hwnd;//windows  窗体句柄

	BITMAPINFO bmpInfo;//需要画的位图信息
	unsigned char *textureBuffer;

	PixelOutput *gBuffer;
	UINT32 *bmpBuffer_;
	double *zBuffer_;
	UINT backGroundColor;

};

#endif // !_DRAWELEMENT_H_