牛奶。早餐。

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複習完上禮拜的課程後

• 我們打開codeblocks
• 備份裡面的maiin.cpp程式碼 等等會用到其中一行
• 會用到的就是這行(   glutSolidSphere(1,slices,stacks);   )

輸入程式碼 : 

#include <GL/glut.h> void display() { glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT); glutSolidSphere(0.3,30,30); glutSwapBuffers(); } int main( int argc,char**argv) { glutInit(&argc,argv); glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH); glutCreateWindow("week14"); glutDisplayFunc(display); glutMainLoop(); }

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• 老師講解了後面括號裡面(0.3,30,30)各是甚麼意思

• 加入timer參數(過了大概3-4秒後背景會變成紅色)

• 程式碼:

#include <GL/glut.h>

void display() { glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT); ///glutSolidSphere(0.3,30,30); glutWireSphere(0.3,30,30); glutSwapBuffers(); } void timer(int t)///timer響起時 做你要做的事 { glClearColor(1,0,0,0);///清背景色 紅色 display();///重製畫面 } int main( int argc,char**argv) { glutInit(&argc,argv); glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH); glutCreateWindow("week14"); glutDisplayFunc(display); glutTimerFunc(3000,timer,0);///時間，呼叫誰，參數 glutMainLoop(); }

• 再加上一點程式碼 讓方塊旋轉

• 程式碼:

#include <GL/glut.h> float angle=0; void display() { glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT); glPushMatrix(); glRotatef(angle,0,0,1); glutSolidCube(0.3); glPopMatrix(); glutSwapBuffers(); } void timer(int t)///timer響起時 做你要做的事 { glutTimerFunc(30,timer,t+1); glClearColor(1,0,0,0); angle++; display();///重製畫面 } int main( int argc,char**argv) { glutInit(&argc,argv); glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH); glutCreateWindow("week14"); glutDisplayFunc(display); glutTimerFunc(3000,timer,0);///時間，呼叫誰，參數 glutMainLoop(); }

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• 加了選轉移動關節程式碼

• 程式碼:

#include <GL/glut.h> float angle=0; void drawArm1() { glPushMatrix(); glScalef(1,0.5,0.5);///變細長的手臂 glColor3f(0,1,0);///紅色的手臂 glutSolidCube(0.2); glPopMatrix(); } void display(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glPushMatrix(); glColor3f(1,1,1); glutSolidCube(0.4); glPushMatrix(); glTranslatef(-0.2,0.2,0); glRotatef(angle,0,0,1); glTranslatef(-0.1,0,0); drawArm1(); glPopMatrix(); glPopMatrix(); glutSwapBuffers(); } int diff=2; void timer(int t) { glutTimerFunc(20,timer,t+1); glClearColor(1,0,0,0);///清背景色:紅色 if(angle>90)diff=-2; if(angle<0)diff=+2; angle+=diff; display();///重畫畫面 } int main(int argc, char** argv) { glutInit( &argc, argv ); glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH ); glutCreateWindow(" Week14 timer "); glutDisplayFunc(display); glutTimerFunc(3000,timer,0); glutMainLoop(); }