本日主題:移動、旋轉、放大縮小

電腦圖學 Week04 2021-03-15
1. 主題: 移動、旋轉、放大縮小
2. glTranslatef(x, y, z);
3. glRotatef( angle, x, y, z);
4. glScalef(x, y, z);
5. 主題: mouse motion函式

#include <GL/glut.h>
#include <stdio.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glEnd();
glutSwapBuffers();///交換兩倍的buffers
}
void mouse(int button,int state,int x,int y)
{
printf("button:%d state:%d x:%d y:%d\n",button,state,x,y);
if(state==GLUT_DOWN){
/printf("glVertex3f((%d-150)/150.0,-(%d-150)/150.0,0);\n",x,y);
}
}

int main(int argc,char ** argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("08160201賣女孩的小火柴");///開啟視窗

glutDisplayFunc(display);///顯示的函示
glutMouseFunc(mouse);
glutMainLoop();///主要迴圈
}

#include <GL/glut.h>
#include <stdio.h>
float teapotX=0,teapotY=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(teapotX,teapotY,0);
glutSolidTeapot(0.3);
glPopMatrix();
glEnd();
glutSwapBuffers();///交換兩倍的buffers
}

void motion(int x,int y){
teapotX=(x-150)/150.0;
teapotY=-(y-150)/150.0;
display();
}
int main(int argc,char ** argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("08160201賣女孩的小火柴");///開啟視窗

glutDisplayFunc(display);///顯示的函示
glutMotionFunc(motion);
glutMainLoop();///主要迴圈
}