//?curve.cpp?:?Defines?the?entry?point?for?the?console?application.
//

#include?“stdafx.h“

#include?“GL/glut.h“

void?init（）;
void?keyboard（unsigned?char?key?int?x?int?y）;
void?drawCurves（void）;
void?curve_menu（int?id）;
void?display（void）;
void?points_mouse（int?button?int?state?int?x?int?y）;
void?reshape（int?w?int?h）;
void?initLight（void）;

#define?MAX_CPTS??25???/*?fixed?maximum?number?of?control?points?*/
#define?Bezier??1
#define?Bspline?2
#define?Bez3d???3

GLfloat?cpts[MAX_CPTS][3];
int?ncpts?=?0;
static?int?width?=?500?height?=?500;???/*?window?width?and?height?*/

GLint?type=0;
GLfloat?newcpts[MAX_CPTS][3];
static?GLfloat?xx=0.0;
static?GLfloat?yy=0.0;
static?GLfloat?zz=1.0;
static?GLfloat?theta[]={0.00.00.0};
static?GLint?axis=2;

//添加變量
double?object_x?=?0object_y?=?0object_z?=?0;?????//3D坐標(biāo)
GLdouble?winx?winy?winz;		//2D坐標(biāo)
int?m_drawPos?=?-1;
bool?isPro?=?false;
bool?isRun?=?false;

/*?Bez3d‘s?control?points*/
GLfloat?points[4][4][3]={
		
		{{-0.5-0.50.6}{-0.2-0.50.6}
		{0.3-0.5-0.4}{0.5-0.50.6}}
		
		{{-0.5-0.30.4}{-0.30.50.6}
		{0.30.30.4}{0.5-0.3-0.5}}
		
		{{-0.50.30.6}{-0.30.30.5}
		{0.30.30.8}{0.5-0.50.5}}
		
		{{-0.50.5-0.6}{-0.30.5-0.6}
		{0.30.30.4}{0.50.5-0.5}}
		
	};

void?vmult（float?m[4][4]?float?v[4][3]?float?r[4][3]）{
	int?ijk;
	for（i=0;i<4;i++）
		for（j=0;j<3;j++）
		{
			r[i][j]=0;
			for（k=0;k<4;k++）??
				r[i][j]+=m[i][k]*v[k][j];
		}
		
}

static?float?mbspline[4][4]=
{
	{1.0/6.0?4.0/6.0?1.0/6.0?0.0}
????{0.0?4.0/6.0?2.0/6.0?0.0}
	{0.0?2.0/6.0?4.0/6.00.0}
	{0.0?1.0/6.0?4.0/6.0?1.0/6.0}
};

static?float?midentity[4][4]=
{
	{1.0?0.0?0.0?0.0}
????{0.0?1.0?0.0?0.0}
	{0.0?0.0?1.0?0.0}
	{0.0?0.0?0.0?1.0}
};


void?computeMatrix（float?m[][4]）
{
	for（int?i?=?0;i<4;i++）
		for（int?j?=?0;?j<4;j++）
		{
			m[i][j]?=?mbspline[i][j];
		}
}

void?init（）
{
	glClearColor（1.0?1.0?1.0?1.0）;
????glColor3f（0.0?0.0?0.0）;
????glPointSize（5.0）;
????glEnable（GL_MAP1_VERTEX_3）;

????glutAddMenuEntry（“Bezier“1）;
????glutAddMenuEntry（“Bspline“2）;
????glutAddMenuEntry（“Bez3d“3）;
????glutAddMenuEntry（“clear?“4）;
????glutAddMenuEntry（“quit“5）;
	glutAttachMenu（GLUT_RIGHT_BUTTON）;

	
	glEnable（GL_POINT_SMOOTH）;??
	glEnable（GL_LINE_SMOOTH）;??
	glHint（GL_POINT_SMOOTH_HINT?GL_NICEST）;?//?Make?round?points?not?square?points??
	glHint（GL_LINE_SMOOTH_HINT?GL_NICEST）;??//?Antialias?the?lines??
	glEnable（GL_BLEND）;??
	glBlendFunc（GL_SRC_ALPHA?GL_ONE_MINUS_SRC_ALPHA）;??

}


/*?draw?the?three?kinds?of?curves*/
void?draw_Bezier（）
{
??int?i;
????for（i=0;?i????{
????????/*?draw?the?curve?using?OpenGL?evaluators?*/

????????glMap1f（GL_MAP1_VERTEX_3?0.0?1.0?3?4?cpts[i]）;
????????glMapGrid1f（30?0.0?1.0）;
????????glEvalMesh1（GL_LINE?0?30）;
????}
}

void?DrawBspline（）
{
	int?i=0;
	int?step;

	flo

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????10782??2010-01-31?22:09??curve\curve.cpp

?????文件????????874??2010-01-19?21:52??curve\curve.sln

????..A..H.?????15360??2010-01-31?22:15??curve\curve.suo

?????文件???????5855??2010-01-19?22:08??curve\curve.vcproj

?????文件???????1427??2010-01-31?22:15??curve\curve.vcproj.CHINA-CC7F7FBC2.Administrator.user

?????文件???????1202??2010-01-15?20:56??curve\ReadMe.txt

?????文件????????292??2010-01-15?20:56??curve\StdAfx.cpp

?????文件????????769??2010-01-15?20:56??curve\StdAfx.h

?????目錄??????????0??2010-01-31?22:15??curve

-----------?---------??----------?-----??----

????????????????36561????????????????????9