16周作業

第16週 目標: 粒子系統(particles)、運鏡、換色, etc (看情況加上複習)
第17週 期末作品展示
1. gluLookAt( eyeX, eyeY, eyeZ,  objX, objY, objZ, upX, upY, upZ);
1.1. 裝 glut DevPak, 把你的期末作品開起來, 試著用 gluLookAt()來改改看攝影機的位子, 像是 45度俯視看你的臉

換色

程式內碼:

#include <GL/glut.h>

#include <math.h>

#include <stdlib.h>

float angleX=0;

float angle1=0;

float eyeX=0.1,eyeY=0.5,eyeZ=0.5, cX=0,cY=0,cZ=0, upX=0,upY=1,upZ=0;

void timer(int t)

{

glutTimerFunc(30,timer,t+1);

eyeX=cos(t/18.0);

eyeZ=sin(t/18.0);

eyeY-=0.01;

if(t%2==0)

  glClearColor( (rand()%255)/255.0, (rand()%255)/255.0 , (rand()%255)/255.0,0);

glutPostRedisplay();

}

void display()

{

glEnable(GL_DEPTH_TEST);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

gluLookAt(eyeX,eyeY,eyeZ, cX,cY,cZ, upX,upY,upZ);

glRotatef(angleX, 0, 1, 0);

glutWireTeapot(0.3);

glPushMatrix();//右邊 

glTranslatef(0.4, 0, 0);

glutSolidSphere(0.2, 30, 30);

glPushMatrix();

glRotatef(angle1, 1, 1, 1);

glTranslatef(0.3, 0, 0);

glScalef(1.5, 1, 1);

glutSolidCube(0.3); 

glPopMatrix();

glPopMatrix();

glPushMatrix();//左邊 

glTranslatef(-0.4, 0, 0);

glutSolidSphere(0.2, 30, 30); 

glPushMatrix();

glRotatef(angle1, 1, 1, 1);

glTranslatef(-0.3, 0, 0);

glScalef(1.5, 1, 1);

glutSolidCube(0.3); 

glPopMatrix();

glPopMatrix();

//階層性關節轉動(T-R-T)

glPushMatrix();//右大腿 

glTranslatef(0.2, -0.2, 0);

glRotatef(angle1, 0, 0, 1);

glTranslatef(0,-0.36/2,0);

glPushMatrix();

glScalef(1,1.8,1);

glutSolidCube(0.2);

glPopMatrix();

glPushMatrix();//右小腿 

glTranslatef(0,-0.18,0);

glRotatef(angle1, 0,0,1);

glTranslatef(0,-0.36/2,0);

glScalef(0.2,0.36,0.2);

glutSolidCube(1);

glPopMatrix();

glPopMatrix();

glPushMatrix();//左大腿 

glTranslatef(-0.2, -0.2, 0);

glRotatef(angle1, 0, 0, 1);

glTranslatef(0,-0.36/2,0);

glPushMatrix();

glScalef(1,1.8,1);

glutSolidCube(0.2);

glPopMatrix();

glPushMatrix();//左小腿 

glTranslatef(0,-0.18,0);

glRotatef(angle1, 0,0,1);

glTranslatef(0,-0.36/2,0);

glScalef(0.2,0.36,0.2);

glutSolidCube(1);

glPopMatrix();

glPopMatrix();

glPushMatrix();//頭 

glTranslatef(0, 0.4, 0);

glRotatef(angle1, 0, 0, 1);

glTranslatef(0,-0.36/2,0);

glScalef(0.2, 0.25, 0.2);

glutSolidSphere(0.8, 30, 30); 

glPopMatrix();

glPopMatrix();

glutSwapBuffers(); 

}

void keyboard(unsigned char key, int x, int y)

{

if (key=='a') angleX+=3;

if (key=='b') angleX-=3;

if (key=='1') angle1+=3;

if (key=='2') angle1-=3;

if (key==' ') eyeX+=0.05;

if (key=='o')

{

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

glOrtho(-2,2,-2,2,-2,2);

glMatrixMode(GL_MODELVIEW);

}

else if(key=='c')

glutTimerFunc(0,timer,0);

        

glutPostRedisplay();

}

void myLight()

{

const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f};

glEnable(GL_LIGHT0);

glEnable(GL_NORMALIZE);

glEnable(GL_COLOR_MATERIAL);

glEnable(GL_LIGHTING);

glLightfv(GL_LIGHT0, GL_POSITION, light_position);

}

int main()

{

glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("weed11");

glutDisplayFunc(display);

glutKeyboardFunc(keyboard);

myLight();

glutMainLoop();

}