2020電腦圖學B: week06

複習光的程式碼
#include <GL/glut.h>
const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };
const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };
const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };
const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };

/* Program entry point */

void display()
{
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glutSolidTeapot(0.3);
glutSwapBuffers();

}
int main(int argc, char *argv[])
{
glutInit(&argc, argv);
glutInitWindowSize(500,500);
glutInitWindowPosition(10,10);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);

glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);

glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);

glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

glutMainLoop();

return EXIT_SUCCESS;
}

增加滑鼠可拖曳

float teapotx=0, teapoty=0;

int 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-oldx;

teapotx+=y-oldy;

oldx=x;

oldy=y;

glutPostRedisplay();

}

glPushMatrix();

glTranslatef(teapotx/250.0,teapoty/250.0,0);

glPopMatrix();

glutMouseFunc(mouse);

glutMotionFunc(motion);

鍵盤控制要平移或是轉動

#include <GL/glut.h>

#include <stdio.h>

const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

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

const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

int type=1; /// type1轉動 type2移動

float teapotX=0, teapotY=0;

float teapotRotY=0;

int oldX=0, oldY=0;

void mouse(int button, int state, int x , int y)

{

oldX=x;

oldY=y;

}

void motion(int x , int y)

{

if(type==1)

{

teapotRotY += (x-oldX);

}

if(type==2)

{

teapotX += x-oldX;

teapotY += -(y-oldY);

}

oldX=x;

oldY=y;

glutPostRedisplay();

}

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();///備份矩陣

glTranslatef(teapotX/250.0, teapotY/250.0,0);

glRotatef(teapotRotY , 0,-1,0);

glutSolidTeapot(0.3);

glPopMatrix();///備份矩陣

glutSwapBuffers();

}

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

{

if(key=='e' || key=='E') type=1 ;

if(key=='w' || key=='W') type=2 ;

printf("now: %c\n", key); ///印出現在的字母確定沒錯

}

int main(int argc, char *argv[])

{

glutInit(&argc, argv);

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);

glutMouseFunc(mouse);

glutMotionFunc(motion);

glutKeyboardFunc(keyboard); ///註冊Keyboard函式

glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHT0);

glEnable(GL_NORMALIZE);

glEnable(GL_COLOR_MATERIAL);

glEnable(GL_LIGHTING);

glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);

glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);

glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

glLightfv(GL_LIGHT0, GL_POSITION, light_position);

glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);

glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);

glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);

glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

glutMainLoop();

return EXIT_SUCCESS;

}

自轉的茶壺

#include <GL/glut.h>

#include <stdio.h>

const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

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

const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

int type=1; /// type1轉動 type2移動

float teapotX=0, teapotY=0;

float teapotRotY=0;

int oldX=0, oldY=0;

void mouse(int button, int state, int x , int y)

{

oldX=x;

oldY=y;

}

void motion(int x , int y)

{

if(type==1)

{

teapotRotY += (x-oldX);

}

if(type==2)

{

teapotX += x-oldX;

teapotY += -(y-oldY);

}

oldX=x;

oldY=y;

glutPostRedisplay();

}

void display()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();///備份矩陣

glTranslatef(teapotX/250.0, teapotY/250.0,0);

glRotatef(teapotRotY , 0,-1,0);

glutSolidTeapot(0.3);

glPopMatrix();///備份矩陣

glutSwapBuffers();

teapotRotY++;///每次多轉動1度

}

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

{

if(key=='e' || key=='E') type=1 ;

if(key=='w' || key=='W') type=2 ;

printf("now: %c\n", key); ///印出現在的字母確定

}

int main(int argc, char *argv[])

{

glutInit(&argc, argv);

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);

glutMouseFunc(mouse);

glutMotionFunc(motion);

glutKeyboardFunc(keyboard); ///註冊Keyboard函式

glutIdleFunc(display);///重劃

glEnable(GL_DEPTH_TEST);

glEnable(GL_LIGHT0);

glEnable(GL_NORMALIZE);

glEnable(GL_COLOR_MATERIAL);

glEnable(GL_LIGHTING);

glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);

glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);

glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

glLightfv(GL_LIGHT0, GL_POSITION, light_position);

glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);

glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);

glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);

glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

glutMainLoop();

return EXIT_SUCCESS;

}

老師示範轉動移動

2020電腦圖學B

2020年4月7日星期二

week06

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張貼留言

2020年4月7日 星期二

week06

沒有留言:

張貼留言

2020年4月7日星期二