幫茶壺打光
設定旋轉軸,
讓茶壺旋轉
讓茶壺辯方體,
一樣可以旋轉
設定旋轉軸,放入手臂,可以直接用滑鼠旋轉
#include <GL/glut.h>
float angle=0, oldX=0, oldY;
void drawBody()
{
glPushMatrix();
glScalef(1, 0.5, 0.5);
glutSolidCube(1);
glPopMatrix();
}
void drawArm()
{
glPushMatrix();
glScalef(0.6, 0.3, 0.3); ///手臂角度
glutSolidCube(1);
glPopMatrix();
}
void display()
{
GLfloat pos[]={0, 0, -1, 0};
glLightfv(GL_LIGHT0, GL_POSITION, pos);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHTING);
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(0.5, 0, 0); ///旋轉軸
glRotatef(angle, 0,0,1); ///角度
glTranslatef(0.25, 0,0);///
drawArm();
//glutSolidTeapot(0.3);
glPushMatrix();
glTranslatef(0.25, 0, 0); ///旋轉軸
glRotatef(angle, 0,0,1); ///角度
glTranslatef(0.25, 0,0);///
drawArm();
glPopMatrix();
glPopMatrix();
glPushMatrix();
glTranslatef(-0.5, 0, 0); ///旋轉軸
glRotatef(-angle, 0,0,1); ///角度
glTranslatef(-0.25, 0,0);///
drawArm();
glPushMatrix();
glTranslatef(-0.25, 0, 0); ///旋轉軸
glRotatef(-angle, 0,0,1); ///角度
glTranslatef(-0.25, 0,0);///
drawArm();
glPopMatrix();
glPopMatrix();
drawBody();
glFlush();
}
void motion(int x, int y)
{
angle -= y - oldY;
oldY=y; oldX=x;
}
void mouse(int button, int state, int x, int y)
{
if(state==GLUT_DOWN) {oldX=x; oldY=y;}
}
void timer(int t)
{
glutTimerFunc(20, timer, t+1);
///angle++; 要自己動,要刪掉
glutPostRedisplay();
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutCreateWindow("TRT test");
glutDisplayFunc(display);
glutTimerFunc(20, timer, 0);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
}
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