/*?rotating?cube?with?color?interpolation?*/

/*?demonstration?of?use?of?homogeneous-coordinate?transformations
and?simple?data?structure?for?representing?cube?from?Chapter?4?*/
/*?colors?are?assigned?to?the?vertices?*/
/*?cube?is?centered?at?origin?*/

#include?
#include?


GLfloat?vertices[]?={-1.0-1.0-1.01.0-1.0-1.0
1.01.0-1.0?-1.01.0-1.0?-1.0-1.01.0?1.0-1.01.0
1.01.01.0?-1.01.01.0};

GLfloat?colors[]?=?{0.00.00.01.00.00.0?1.01.00.0
0.01.00.0?0.00.01.0?1.00.01.0?1.01.01.0?0.01.01.0};

GLubyte?cubeIndices[]={032123760473126545670154};


static?GLfloat?theta[]?=?{0.00.00.0};
static?GLint?axis?=?2;

void?display（）
{
/*?display?callback?clear?frame?buffer?and?z?buffer
???rotate?cube?and?draw?swap?buffers?*/

?glClear（GL_COLOR_BUFFER_BIT?|?GL_DEPTH_BUFFER_BIT）;
?glLoadIdentity（）;
?glRotatef（theta[0]?1.0?0.0?0.0）;
?glRotatef（theta[1]?0.0?1.0?0.0）;
?glRotatef（theta[2]?0.0?0.0?1.0）;

?glDrawElements（GL_QUADS?24?GL_UNSIGNED_BYTE?cubeIndices）;

?glBegin（GL_LINES）;
???glVertex3f（0.00.00.0）;
???glVertex3f（1.01.01.0）;
?glEnd（）;
?glFlush（）;
?glutSwapBuffers（）;
}

void?spinCube（）
{

/*?idle?callback?spin?cube?2?degrees?about?selected?axis?*/

?theta[axis]?+=?2.0;
?if（?theta[axis]?>?360.0?）?theta[axis]?-=?360.0;
?glutPostRedisplay（）;
}

void?mouse（int?btn?int?state?int?x?int?y）
{

/*?mouse?callback?selects?an?axis?about?which?to?rotate?*/

?if（btn==GLUT_LEFT_BUTTON?&&?state?==?GLUT_DOWN）?axis?=?0;
?if（btn==GLUT_MIDDLE_BUTTON?&&?state?==?GLUT_DOWN）?axis?=?1;
?if（btn==GLUT_RIGHT_BUTTON?&&?state?==?GLUT_DOWN）?axis?=?2;
}

void?myReshape（int?w?int?h）
{
????glViewport（0?0?w?h）;
????glMatrixMode（GL_PROJECTION）;
????glLoadIdentity（）;
????if?（w?<=?h）
????????glOrtho（-2.0?2.0?-2.0?*?（GLfloat）?h?/?（GLfloat）?w
????????????2.0?*?（GLfloat）?h?/?（GLfloat）?w?-10.0?10.0）;
????else
????????glOrtho（-2.0?*?（GLfloat）?w?/?（GLfloat）?h
????????????2.0?*?（GLfloat）?w?/?（GLfloat）?h?-2.0?2.0?-10.0?10.0）;
????glMatrixMode（GL_MODELVIEW）;
}

int?main（int?argc?char?**argv）
{

/*?need?both?double?buffering?and?z?buffer?*/

???glutInit（&argc?argv）;
???glutInitDisplayMode（GLUT_DOUBLE?|?GLUT_RGB?|?GLUT_DEPTH）;
???glutInitWindowSize（500?500）;
???glutCreateWindow（“colorcube“）;
???glutReshapeFunc（myReshape）;
???glutDisplayFunc（display）;
???glutIdleFunc（spinCube）;
???glutMouseFunc（mouse）;
???glEnable（GL_DEPTH_TEST）;?/*?Enable?hidden--surface--removal?*/
???glEnableClientState（GL_COLOR_ARRAY）;
???glEnableClientState（GL_NORMAL_ARRAY）;
???glEnableClientState（GL_VERTEX_ARRAY）;
???glVertexPointer（3?GL_FLOAT?0?vertices）;
???glColorPointer（3GL_FLOAT?0?colors）;
???glColor3f（1.01.01.0）;
???glutMainLoop（）;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????2835??2008-10-23?10:34??計算機圖形學代碼\code\cubev.c

?????文件???????3198??2002-04-06?11:06??計算機圖形學代碼\code\cubevs.c

?????文件???????3116??2005-04-26?20:37??計算機圖形學代碼\code\cube_view.c

?????文件???????1869??2008-10-09?11:02??計算機圖形學代碼\code\simple.c

?????文件???????2494??2005-04-25?07:22??計算機圖形學代碼\code\single_double.c

?????文件???????2491??2008-10-09?10:54??計算機圖形學代碼\code\square.c

?????目錄??????????0??2008-12-12?20:42??計算機圖形學代碼\code

?????目錄??????????0??2008-11-17?12:04??計算機圖形學代碼

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

????????????????16003????????????????????8