Step01-1 認識Timer程式
week14-1_timer
#include <GL/glut.h>
float angle=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle, 0, 0, 1);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void timer(int t) 你的timer函式 做對應動作
{
glutTimerFunc(500,timer,t+1); 設定下一個關鍵
angle +=90; 增加90度
glutPostRedisplay(); 重連畫面
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week14");
glutDisplayFunc(display);
glutTimerFunc(2000, timer , 0); 設定timer函式
glutMainLoop();
}
Step01-2 鍵盤控制 keyboard觸發timer
week14-2_timer_play
#include <GL/glut.h>
float angle=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle, 0, 0, 1);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void timer(int t)
{
glutTimerFunc(500,timer,t+1);
angle +=90;
glutPostRedisplay();
}
void keyboard(unsigned char key,int x, int y)
{
glutTimerFunc(0, timer , 0);
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week14");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);///用keyboard
///glutTimerFunc(2000, timer , 0);
glutMainLoop();
}
隨機鍵盤按鍵就能觸發
Step02-1 滑鼠控制
#include <GL/glut.h>
float angle=0, oldAngle=0,newAngle=0;
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle, 0, 0, 1);
glutSolidTeapot(0.3);
glPopMatrix();
glutSwapBuffers();
}
void timer(int t)
{
if(t<100) glutTimerFunc(50,timer,t+1);
float alpha = t/100.0; ///alpha介於0.00~1.00之間
angle = newAngle*alpha + (1-alpha) * oldAngle; ///alpha內插公式
glutPostRedisplay();///重畫畫面
}
void motion(int x,int y)
{
angle = x;
glutPostRedisplay();
}
void mouse(int button,int state,int x,int y)
{
if(state==GLUT_DOWN) oldAngle = x;///按下
if(state==GLUT_UP) newAngle = x;///放開
glutPostRedisplay();
}
void keyboard(unsigned char key,int x, int y)
{
glutTimerFunc(0, timer , 0);
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week14");
glutDisplayFunc(display);
glutMouseFunc(mouse);///按下去=起點 放開=終點
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);///用keyboard
glutMainLoop();
}
main()裡面要加
glutMotionFunc(motion);
glutMotionFunc(motion);
glutMouseFunc(mouse);
Step02-2 final_project
設定函數ID
int ID=0;
void keyboard(unsigned char key, int x, int y)
{
if(key== '0') ID=0;
if(key== '1') ID=1;
if(key== '2') ID=2;
if(key== '3') ID=3;
glutPostRedisplay();
}
選定特定部位並標上顏色
void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glScalef(0.2,0.2,0.2);
///glTranslatef(teapotX,teapotY, 0);
///glutSolidTeapot(0.3);
if(body == NULL){
head = glmReadOBJ("model/head.obj");
body = glmReadOBJ("model/body.obj");///week13 Step02-1
uparmL = glmReadOBJ("model/uparmL.obj");///week13 Step03-1
lowarmL = glmReadOBJ("model/lowarmL.obj");///week13 Step03-1
///glmUnitize(body);
}
if(ID==0) glColor3f(1,0,0);///選定的設紅色
else glColor3f(1,1,1);///沒選設白色
if(show[0])glmDraw(head, GLM_MATERIAL);///week13 Step03-1
if(ID==1) glColor3f(1,0,0);///選定的設紅色
else glColor3f(1,1,1);///沒選設白色
if(show[1])glmDraw(body, GLM_MATERIAL);///week13 Step03-1
glPushMatrix();
glTranslatef(teapotX,teapotY,0);
if(ID==2) glColor3f(1,0,0);///選定的設紅色
else glColor3f(1,1,1);///沒選設白色
if(show[2])glmDraw(uparmL , GLM_MATERIAL);///week13 Step03-1
glPopMatrix();
if(ID==3) glColor3f(1,0,0);///選定的設紅色
else glColor3f(1,1,1);///沒選設白色
if(show[3])glmDraw(lowarmL , GLM_MATERIAL);///week13 Step03-1
glPopMatrix();
glutSwapBuffers();
}
Step03-1 移動中心點
修改部分程式只讓手臂出現
新增2段程式
利用找到的中心點座標來選轉手臂
if(ID==1) glColor3f(1,0,0);///選定的設紅色
else glColor3f(1,1,1);///沒選設白色
if(show[1])glmDraw(body, GLM_MATERIAL);///week13 Step03-1
glPushMatrix();
glTranslatef(1.159999, 0.580000, 0);
glRotatef(angle ,0,0,1);
glTranslatef(-1.159999, -0.580000, 0);
在第71行幫angle設定函數
同樣方法弄到手上
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