2.課堂作業
網址:jsyeh/3dcg10/
glTranslatef(x,y,z);
glRotatef(角度,x,y,z);
glScalf(x,y,z);
3. 茶壺會一直移動
程式碼:
#include <GL/glut.h>
void display()
{
glClearColor(1,1,0,1);
glClear(GL_COLOR_BUFFER_BIT);
glTranslatef(0, -0.1, 0);
glColor3f(1,0,0);
glutSolidTeapot(0.3);
glutSwapBuffers();
}
int main(int argc, char**argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Hello");
glutDisplayFunc(display);
glutMainLoop();
}
點到哪跑到哪
程式碼
#include <GL/glut.h>
float nowX=0, nowY=0;
void mouse(int button, int state, int x,int y)
{
nowX = (x-150)/150.0; nowY = -(y-150)/150.0;
}
void display()
{
glClearColor(1,1,0,1);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glTranslatef(nowX,nowY,0);
glColor3f(1,0,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Hello 3D");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMainLoop();
}
#include <GL/glut.h>
float nowX=0, nowY=0;
void mouse(int button, int state, int x,int y)
{
nowX = (x-150)/150.0; nowY = -(y-150)/150.0;
}
void display()
{
glClearColor(1,1,0,1);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glTranslatef(nowX,nowY,0);
glColor3f(1,0,0);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Hello 3D");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMainLoop();
}
4.畫出圓圈 隨滑鼠移動並顯示座標
程式碼
#include <GL/glut.h>
#include <stdio.h>
#include <math.h>
float nowX=0, nowY=0;
void mouse(int button, int state, int x,int y)
{
nowX = (x-150)/150.0; nowY = -(y-150)/150.0;
printf("glTranslatef(%f,%f, 0);\n", nowX, nowY);
}
void display()
{
glClearColor(1,1,0,1);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glTranslatef(nowX,nowY,0);
glColor3f(1,0,0);
///glutSolidTeapot(0.3);
glBegin(GL_POLYGON);
for(float angle=0; angle<3.14159235358979*2; angle+=0.1){
glVertex2f(0.2*cos(angle), 0.2*sin(angle));
}
glEnd();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Hello 3D");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMainLoop();
}
#include <GL/glut.h>
#include <stdio.h>
#include <math.h>
float nowX=0, nowY=0;
void mouse(int button, int state, int x,int y)
{
nowX = (x-150)/150.0; nowY = -(y-150)/150.0;
printf("glTranslatef(%f,%f, 0);\n", nowX, nowY);
}
void display()
{
glClearColor(1,1,0,1);
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glTranslatef(nowX,nowY,0);
glColor3f(1,0,0);
///glutSolidTeapot(0.3);
glBegin(GL_POLYGON);
for(float angle=0; angle<3.14159235358979*2; angle+=0.1){
glVertex2f(0.2*cos(angle), 0.2*sin(angle));
}
glEnd();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("Hello 3D");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMainLoop();
}








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