//#include

#include

#include

using namespace std;

float rtri;

float rquad;

GLfloat points0[5][3] = { {0,1,0},{-1,-1,1},{1,-1,1},{1,-1,-1},{-1,-1,-1} };

GLfloat points1[8][3] = { {1,1,-1},{-1,1,-1},{-1,1,1},{1,1,1},{1,-1,1},{-1,-1,1},{-1,-1,-1},{1,-1,-1} };

//四棱錐顏色

GLfloat Colors0[4][3] = { {1,0,0},{0,1,0},{0,0,1},{1,1,0} };

//立方體顏色

GLfloat Colors1[6][3] = { {0,1,0},{1,0.5,0},{1,0,0},{1,1,0},{0,0,1},{1,0,1} };

//四棱錐頂點序列號

int vertice0[4][3] = { {0,1,2},{0,2,3},{0,3,4},{0,4,1} };

//立方體頂點序列號

int vertice1[6][4] = { {0,1,2,3},{4,5,6,7},{3,2,5,4},{7,6,1,0},{2,1,6,5},{0,3,4,7} };

void InitGl(GLvoid)

{

glShadeModel(GL_SMOOTH);

glClearColor(1.0f,1.0f,1.0f,1.0f);

glClearDepth(1.0f);

glEnable(GL_DEPTH_TEST);

glDepthFunc(GL_LEQUAL);

glEnable(GL_COLOR_MATERIAL);

glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST);

}

/*

創建棱錐體

*/

void CreatePyramid()

{

glBegin(GL_TRIANGLES);

for (int i=0;i<4;i++)

{

glColor3fv(Colors0[i]);

for (int j=0;j<3;j++)

{

int VtxId = vertice0[i][j];

glVertex3fv(points0[VtxId]);

}

}

glEnd();

//構建底面

glBegin(GL_QUADS);

glColor3f(1.0f,1.0f,1.0f);

for (int k=0;k<4;k++)

{

glVertex3fv(points0[k]);

}

glEnd();

}

/*

創建立方體

*/

void CreateCube()

{

glBegin(GL_QUADS);

for (int i=0;i<6;i++)

{

glColor3fv(Colors1[i]);

for (int j=0;j<4;j++)

{

int VtxId = vertice1[i][j];

glVertex3fv(points1[VtxId]);

}

}

glEnd();

}

void display(void)

{

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

glLoadIdentity();

glPushMatrix();

glTranslatef(-1.5f,0.0f,-6.0f);//平移至左側

glRotatef(rtri,0.0f,1.0f,0.0f);//旋轉一個角度

CreatePyramid();//創建三棱錐

glLoadIdentity();//將矩陣歸一化回原樣

glTranslatef(1.5f,0.0f,-6.0f);//平移至右側

glRotatef(rquad,1.0f,0.0f,0.0f);//旋轉一個角度

CreateCube();//創建立方體

glPopMatrix();//

rtri += 0.02f;//修改三角塔旋轉角度

rquad -= 0.05f;//修改立方體旋轉角度

glutSwapBuffers();

}

void reshape(int width,int height)

{

if (height == 0)

{

height = 1;

}

glViewport(0,0,width,height);

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);

glMatrixMode(GL_MODELVIEW);

glLoadIdentity();

}

void main(int argc,char** argv)

{

glutInit(&argc,argv);

glutInitDisplayMode(GLUT_RGBA|GLUT_DOUBLE);

glutInitWindowSize(600,460);

glutCreateWindow("椎體和立方體");

InitGl();

glutDisplayFunc(display);

glutReshapeFunc(reshape);

glutIdleFunc(display);

glutMainLoop();

}

運行效果：

總結

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