#include
#include
#include

/*Set?initial?display-window?size.*/
GLsizei?winWidth=600winHeight=600;

/*Set?range?for?world?coordinates.*/
GLfloat?xwcMin=0.0xwcMax=225.0;
GLfloat?ywcMin=0.0ywcMax=225.0;//10

class?wcPt2D{
public:
	GLfloat?xy;
};

typedef?GLfloat?Matrix3x3?[3][3];

Matrix3x3?matComposite;
//20
const?GLfloat?pi=3.14159;

void?init?（void）
{
	/*Set?color?of?display?window?to?white.*/
	glClearColor?（1.01.01.00.0）;
}

/*Constract?the?3?by?3?identity?matrix.*/
void?matrix3x3SetIdentity（Matrix3x3?matIdent3x3）//30
{
	GLint?rowcol;
	
	for（row=0;row<3;row++）
		for（col=0;col<3;col++）
			matIdent3x3[row][col]=（row==col）;
}

/*Premultiply?matrix?m1?times?m2?store?result?in?m2.*/
void?matrix3x3PreMultiply（Matrix3x3?m1Matrix3x3?m2）//40
{
	GLint?rowcol;
	Matrix3x3?matTemp;

	for（row=0;row<3;row++）
		for（col=0;col<3;col++）
			matTemp[row][col]=m1[row][0]*m2[0][col]+m1[row][1]*m2[1][col]+m1[row][2]*m2[2][col];

	for（row=0;row<3;row++）
		for（col=0;col<3;col++）//50
			m2[row][col]=matTemp[row][col];
}

void?translate2D（GLfloat?tx?GLfloat?ty）
{
	Matrix3x3?matTransl;

	/*Intialize?translation?matrix?to?identity.*/
	matrix3x3SetIdentity（matTransl）;
//60
	matTransl[0][2]=tx;
	matTransl[1][2]=ty;

	/*Concatenate?matTransl?with?the?composite?matrix.*/
	matrix3x3PreMultiply（matTransl?matComposite）;
}

void?rotate2D（wcPt2D?pivotPt?GLfloat?theta）
{
	Matrix3x3?matRot;//70

	/*Initialize?rotation?matrix?to?identy.*/
	matrix3x3SetIdentity（matRot）;

	matRot[0][0]=cos（theta）;
	matRot[0][1]=-sin（theta）;
	matRot[0][2]=pivotPt.x*（1-cos（theta））+pivotPt.y*sin（theta）;

	matRot[1][0]=sin（theta）;
	matRot[1][1]=cos（theta）;//80
	matRot[1][2]=pivotPt.y*（1-cos（theta））-pivotPt.x*sin（theta）;

	/*Concatenate?matRot?with?the?composite?matrix.*/
	matrix3x3PreMultiply（matRot?matComposite）;
}

void?scale2D（GLfloat?sxGLfloat?sywcPt2D?fixedPt）
{
	Matrix3x3?matScale;
//90
	/*Initialize?scaling?matrix?to?identity.*/
	matrix3x3SetIdentity（matScale）;

	matScale[0][0]=sx;
	matScale[0][2]=（1-sx）*fixedPt.x;
	matScale[1][1]=-sy;
	matScale[1][2]=（1-sy）*fixedPt.y;

	/*Concatenate?matScale?with?the?composite?matrix.*/
	matrix3x3PreMultiply（matScale?matComposite）;//100
}

/*Using?the?composite?matrix?calculate?transformed?coordinates.*/
void?transformVerts2D（GLint?nVerts?wcPt2D?*verts）
{
	GLint?k;
	GLfloat?temp;

	for（k=0;k		temp=matComposite[0][0]*verts[k].x+matComposite[0][1]*verts[k].y+matComposite[0][2];//110
		verts[k].y=matComposite[1][0]*verts[k].x+matComposite[1][1]*verts[k].y+matComposite[1][2];
		verts[k].x=temp;
	}
}

void?triangle（wcPt2D?*verts）
{
	GLint?k;

	glBegin（GL_TRIANGLES）;//120
	for（k=0;k<3;k++）
		glVertex2f（verts[k].xverts[k].y）;
	glEnd（）;
}

void?displayFcn（void）
{
	/*Define?initial?position?for?triangle*/
????GLint?nVerts=3;
	wcPt2D?verts[3]={{50.025.0}{150.025.0}{100.0100.0}};//

?屬性????????????大小?????日期????時間???名稱
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?????文件???????4518??2011-10-15?21:50??5_4_11二維復(fù)合矩陣編程實(shí)例\5_4_11二維復(fù)合矩陣編程實(shí)例.dsp

?????文件????????560??2011-10-15?20:25??5_4_11二維復(fù)合矩陣編程實(shí)例\5_4_11二維復(fù)合矩陣編程實(shí)例.dsw

?????文件??????41984??2011-10-15?21:51??5_4_11二維復(fù)合矩陣編程實(shí)例\5_4_11二維復(fù)合矩陣編程實(shí)例.ncb

?????文件??????53760??2011-10-15?21:51??5_4_11二維復(fù)合矩陣編程實(shí)例\5_4_11二維復(fù)合矩陣編程實(shí)例.opt

?????文件????????984??2011-10-15?21:45??5_4_11二維復(fù)合矩陣編程實(shí)例\5_4_11二維復(fù)合矩陣編程實(shí)例.plg

?????文件?????204932??2011-10-15?21:45??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug\5_4_11二維復(fù)合矩陣編程實(shí)例.exe

?????文件?????221108??2011-10-15?21:45??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug\5_4_11二維復(fù)合矩陣編程實(shí)例.ilk

?????文件?????345960??2011-10-15?21:30??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug\5_4_11二維復(fù)合矩陣編程實(shí)例.pch

?????文件?????369664??2011-10-15?21:45??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug\5_4_11二維復(fù)合矩陣編程實(shí)例.pdb

?????文件??????41984??2011-10-15?21:46??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug\vc60.idb

?????文件??????45056??2011-10-15?21:43??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug\vc60.pdb

?????文件??????13507??2011-10-15?21:45??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug\三角形旋轉(zhuǎn)縮放平移.obj

?????文件???????4737??2011-10-15?21:43??5_4_11二維復(fù)合矩陣編程實(shí)例\三角形旋轉(zhuǎn)縮放平移.cpp

?????文件???????4737??2011-10-15?21:44??5_4_11二維復(fù)合矩陣編程實(shí)例\新建?文本文檔.txt

?????目錄??????????0??2011-10-15?21:45??5_4_11二維復(fù)合矩陣編程實(shí)例\Debug

?????目錄??????????0??2011-10-15?21:51??5_4_11二維復(fù)合矩陣編程實(shí)例

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