A

 week16

1. alpha 內插公式: 0.0 ~ 1.0 ➡ angle=alpha*新角度+(1-alpha)*舊角度

2-1.複製上週 week15-angle-TRT-again 程式碼 

檔名: week16-interpolation

2-2.改善按r之後動作不連續的狀況，利用alpha內插法

程式碼:#include <GL/glut.h>

void reshape(int w,int h){

    const float ar = (float) w / (float) h;

    glViewport(0, 0, w, h);///3D變2D

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(60,ar,0.1,100);

    glMatrixMode(GL_MODELVIEW);///3D Model+View

    glLoadIdentity() ;

    gluLookAt(0,0,3,

              0,0,0,

              0,1,0

              );

}

void display(){

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(1);

    glutSwapBuffers();

}

int main(int argc,char** argv){

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16");

    glutDisplayFunc(display);

    glutReshapeFunc(reshape);

    glutMainLoop();

}