step 01-1
使用滑鼠可拖曳改變圖形的轉向
#include <GL/glut.h>
float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;
void mouse(int button, int state, int x, int y)
{
oldX=x;
oldY=y;
}
void motion(int x, int y)
{
angle += x - oldX;
oldX = x;
glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle,0,0,1);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char* argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutMainLoop();
}
step01-2
可增加圖形顏色及背景顏色
#include <GL/glut.h>
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,0);
glBegin(GL_POLYGON);
glVertex2f(0.5, 0.5);
glVertex2f(-0.5, 0.5);
glVertex2f(-0.5, -0.5);
glVertex2f(0.5, -0.5);
glEnd();
glColor3f(0,1,0);
glutSolidTeapot( 0.3 );
glutSwapBuffers();
}
int main(int argc, char* argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMainLoop();
}
step01-3
可使用滑鼠拖曳圖案
#include <GL/glut.h>
float teapotX = 0, teapotY = 0;
void motion(int x, int y) {
teapotX = (x-150)/150.0;
teapotY = (150-y)/150.0;
glutPostRedisplay();
}
void display() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(teapotX, teapotY, 0);
glutSolidTeapot( 0.3 );
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMainLoop();
}
step01-4
用滑鼠可拖曳轉向圖案
#include <GL/glut.h>
float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;
void mouse(int button, int state, int x, int y) {
oldX = x;
oldY = y;
}
void motion(int x, int y) {
angle += x - oldX;
oldX = x;
glutPostRedisplay();
}
void display() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle, 0, 0, 1);
glutSolidTeapot( 0.3 );
glPopMatrix();
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutMainLoop();
}
step01-5
用滑鼠拖曳可移動圖案，左邊會記錄
#include <stdio.h>
#include <GL/glut.h>
float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;
void mouse(int button, int state, int x, int y) {
oldX = x;
oldY = y;
}
void motion(int x, int y) {
teapotX = (x-150)/150.0;
teapotY = (150-y)/150.0;
angle += x - oldX;
oldX = x;
glutPostRedisplay();
printf(" glTranslatef( %.2f, %.2f, 0 ); \n", teapotX, teapotY );
}
void display() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glColor3f(1,1,1);
//glRotatef(angle, 0, 0, 1);
glTranslatef(teapotX, teapotY, 0);
glutSolidTeapot( 0.3 );
glPopMatrix();
glColor3f(0,1,0);
glutSolidTeapot( 0.02 );
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutMainLoop();
}
step01-6
可記錄用滑鼠拖曳後轉向的角度及方位
#include <stdio.h>
#include <GL/glut.h>
float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;
void mouse(int button, int state, int x, int y) {
oldX = x;
oldY = y;
}
void motion(int x, int y) {
teapotX = (x-150)/150.0;
teapotY = (150-y)/150.0;
angle += x - oldX;
oldX = x;
glutPostRedisplay();
printf(" glTranslatef( %.2f, %.2f, 0 ); \n", teapotX, teapotY );
}
void display() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glColor3f(1,1,1);
//glTranslatef( 0.42, -0.06, 0 );
glRotatef(angle, 0, 0, 1);
glTranslatef( 0.42, -0.06, 0 );//glTranslatef(teapotX, teapotY, 0);
glutSolidTeapot( 0.3 );
glPopMatrix();
glColor3f(0,1,0);
glutSolidTeapot( 0.02 );
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutMainLoop();
}
step01-7
轉動軸不同
#include <GL/glut.h>
#include <stdio.h>
float teapotX=0, teapotY=0, angle=0, oldX=0, oldY=0;
void mouse(int botton, int state, int x, int y){
oldX = x;
oldY = y;
}
void motion(int x, int y) {
teapotX = (x-150) / 150.0;
teapotY = (150-y) / 150.0;
angle += x-oldX;
oldX = x;
glutPostRedisplay();
printf(" gltranslatef( %.2f, %.2f, 0);\n", teapotX, teapotY);
}
void display() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glColor3f(1,1,1);
glTranslatef(-0.420 , +0.047 , 0 );
glRotatef(angle, 0, 0, 1);
glTranslatef(0.420 , -0.047 , 0 );
//glTranslatef(teapotX, teapotY, 0);
glutSolidTeapot( 0.3 );
glPopMatrix();
glColor3f(0,1,0);
glutSolidTeapot( 0.01 );
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
glutMainLoop();
}
step02-1
剛彈模型
#include <stdio.h>
#include <GL/glut.h>
#include "glm.h"
GLMmodel * gundam = NULL;
float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;
void mouse(int button, int state, int x, int y) {
oldX = x;
oldY = y;
}
void motion(int x, int y) {
teapotX = (x-150)/150.0;
teapotY = (150-y)/150.0;
angle += x - oldX;
oldX = x;
glutPostRedisplay();
printf(" glTranslatef( %.2f, %.2f, 0 ); \n", teapotX, teapotY );
}
void display() {
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glColor3f(1,0,0);
glScalef(0.04, 0.04, 0.04);
glmDraw(gundam, GLM_MATERIAL);
glPopMatrix();
glColor3f(0,1,0);
glutSolidTeapot( 0.02 );
glutSwapBuffers();
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week16");
glutDisplayFunc(display);
glutMotionFunc(motion);
glutMouseFunc(mouse);
gundam = glmReadOBJ("model/Gundam.obj");
glutMainLoop();
}
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