2020電腦圖學B: week06

茶壺移動+打光

#include <GL/glut.h>
///打光的第0步，宣告陣列，裡面有光的屬性值
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 };

float teapotX=0,teapotY=0; ///TODO1
int oldX=0,oldY=0; ///TODO1

void mouse(int button,int state,int x,int y)
{ ///TODO1: mouse要可移動teapot Step1: 按下去
oldX=x; ///TODO1
oldY=y; ///TODO1
}

void motion (int x,int y)
{
teapotX += x-oldX;
teapotY += y-oldY;
oldX=x;
oldY=y;
glutPostRedisplay();
}

void display(){
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();///TODO2 備份矩陣
glTranslatef( teapotX/250.0, teapotY/250.0,0);
glutSolidTeapot(0.3); ///TODO2
glPopMatrix();///TODO2: 備份矩陣
glutSwapBuffers();
}

int main(int argc, char *argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);
glutMouseFunc(mouse); ///TODO
glutMotionFunc(motion); ///TODO1

///打光3D
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);

///打光1:要開啟光線
glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);

///打光2:要設定光light的設定值 (前面陣列)
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);

///打光2.2: 物體也設定 material
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;
}

==============================================================

用鍵盤切換移動、轉動

#include <GL/glut.h>

///打光的第0步，宣告陣列，裡面有光的屬性值

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; ///TODO2: 1:rotate , 2:translate

float teapotX=0,teapotY=0; ///TODO1

float teapotRotY=0; ///TODO2:轉動的變數

int oldX=0,oldY=0; ///TODO1

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

{ ///TODO1: mouse要可移動teapot Step1: 按下去

oldX=x; ///TODO1

oldY=y; ///TODO1

}

void motion (int x,int y) ///TODO1: Step2: motion動

{

if(type==1){ ///TODO2: 轉動

teapotRotY += x-oldX;

}else if(type==2){ ///TODO2: 移動

teapotX += x-oldX; ///TODO1:

teapotY += y-oldY; ///TODO1:

}

oldX=x; ///TODO1

oldY=y; ///TODO1

glutPostRedisplay(); ///TODO1:更新畫面

}

void display(){

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();///TODO1

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

glRotatef(teapotRotY,0,-1,0); /// x方向的動vs Y軸

glutSolidTeapot(0.3); ///TODO2

glPopMatrix(); ///TODO2 備份矩陣

glutSwapBuffers();

}

#include <stdio.h>

void keyboard(unsigned char key, int x,int y) ///TODO2

{ ///沒有正負號,全部都當正的來用 0...255

if(key=='e' || key=='E') type=1; ///Maya:轉動1

if(key=='w' || key=='W') type=2; ///Maya:轉動2

printf("now: %c\n", key);

}

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

{

glutInit(&argc, argv);

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);

glutMouseFunc(mouse); ///TODO

glutMotionFunc(motion); ///TODO1

glutKeyboardFunc(keyboard); ///TODO2

///打光3D

glEnable(GL_DEPTH_TEST);

glDepthFunc(GL_LESS);

///打光1:要開啟光線

glEnable(GL_LIGHT0);

glEnable(GL_NORMALIZE);

glEnable(GL_COLOR_MATERIAL);

glEnable(GL_LIGHTING);

///打光2:要設定光light的設定值 (前面陣列)

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);

///打光2.2: 物體也設定 material

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;

}

==============================================================

移動轉動

在int main中 glutKeyboardFunc後新增

glutIdleFunc(display); ///TODO3: Idle閒閒的時候,就重畫

在void display 中最後一行新增

teapotRotY++; ///TODO3:每次多轉動1度

#include <GL/glut.h>

///打光的第0步，宣告陣列，裡面有光的屬性值

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; ///TODO2: 1:rotate , 2:translate

float teapotX=0,teapotY=0; ///TODO1

float teapotRotY=0; ///TODO2:轉動的變數

int oldX=0,oldY=0; ///TODO1

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

{ ///TODO1: mouse要可移動teapot Step1: 按下去

oldX=x; ///TODO1

oldY=y; ///TODO1

}

void motion (int x,int y) ///TODO1: Step2: motion動

{

if(type==1){ ///TODO2: 轉動

teapotRotY += x-oldX;

}else if(type==2){ ///TODO2: 移動

teapotX += x-oldX; ///TODO1:

teapotY += y-oldY; ///TODO1:

}

oldX=x; ///TODO1

oldY=y; ///TODO1

glutPostRedisplay(); ///TODO1:更新畫面

}

void display(){

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();///TODO1

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

glRotatef(teapotRotY,0,-1,0); /// x方向的動vs Y軸

glutSolidTeapot(0.3); ///TODO2

glPopMatrix();///TODO2 備份矩陣

glutSwapBuffers();

teapotRotY++; ///TODO3:每次多轉動1度

}

#include <stdio.h>

void keyboard(unsigned char key, int x,int y) ///TODO2

{ ///沒有正負號,全部都當正的來用 0...255

if(key=='e' || key=='E') type=1; ///Maya:轉動1

if(key=='w' || key=='W') type=2; ///Maya:轉動2

printf("now: %c\n", key);

}

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

{

glutInit(&argc, argv);

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

glutCreateWindow("GLUT Shapes");

glutDisplayFunc(display);

glutMouseFunc(mouse); ///TODO

glutMotionFunc(motion); ///TODO1

glutKeyboardFunc(keyboard);///TODO2

glutIdleFunc(display); ///TODO3: Idle閒閒的時候,就重畫

///打光3D

glEnable(GL_DEPTH_TEST);

glDepthFunc(GL_LESS);

///打光1:要開啟光線

glEnable(GL_LIGHT0);

glEnable(GL_NORMALIZE);

glEnable(GL_COLOR_MATERIAL);

glEnable(GL_LIGHTING);

///打光2:要設定光light的設定值 (前面陣列)

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);

///打光2.2: 物體也設定 material

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;

}

==============================================================

解釋移動、轉動

2020電腦圖學B

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

week06

沒有留言:

張貼留言

2020年4月7日星期二