opengl Test

時間 2019-11-12

標籤 opengl test 简体版

原文原文鏈接

 
 
 
 LIBS += -lGL -lGLU -lglut -lGLEW

  1 #include <GL/glut.h>
  2 #include <iostream>
  3 using namespace std;
  4 GLfloat light0_position[] = { 1.0, 1.0, 1.0, 0.0 };
  5 
  6 GLuint fogMode[]= { GL_EXP, GL_EXP2, GL_LINEAR };        // 霧氣的模式
  7 
  8 GLuint fogfilter= 0;                    // 使用哪種霧氣
  9 
 10 GLfloat fogColor[4]= {0.5f, 0.5f, 0.5f, 1.0f};        // 霧的顏色設爲白色
 11 void init(void)
 12 {
 13 
 14     glClearColor(0.5f,0.5f,0.5f,1.0f);
 15 
 16     GLfloat mat_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
 17     GLfloat mat_diffuse[]= { 0.8, 0.8, 0.8, 1.0 };
 18     GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
 19     GLfloat mat_shininess[] = { 60.0 };
 20 
 21     GLfloat light0_diffuse[]= { 0.0, 0.0, 1.0, 1.0};
 22 //    GLfloat light0_position[] = { 1.0, 1.0, 1.0, 0.0 };
 23 
 24     GLfloat light1_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
 25     GLfloat light1_diffuse[]= { 1.0, 0.0, 0.0, 1.0 };
 26     GLfloat light1_specular[] = { 1.0, 0.6, 0.6, 1.0 };
 27     GLfloat light1_position[] = { -3.0, -3.0, 3.0, 1.0 };
 28 
 29     GLfloat spot_direction[]={ 1.0,1.0,-1.0};
 30 
 31     GLfloat emitioncolor[] = { 0.0, 1.0, 0.0, 1.0 };
 32     glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
 33     glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
 34     glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
 35     glMaterialfv(GL_FRONT, GL_SHININESS,mat_shininess);
 36 //    glMaterialfv(GL_FRONT, GL_EMISSION, emitioncolor);
 37 
 38     glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
 39     glLightfv(GL_LIGHT0, GL_POSITION,light0_position);
 40 
 41     glLightfv(GL_LIGHT1, GL_AMBIENT, light1_ambient);
 42     glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_diffuse);
 43     glLightfv(GL_LIGHT1, GL_SPECULAR,light1_specular);
 44     glLightfv(GL_LIGHT1, GL_POSITION,light1_position);
 45 
 46     glLightf (GL_LIGHT1, GL_SPOT_CUTOFF, 30.0);
 47     glLightfv(GL_LIGHT1, GL_SPOT_DIRECTION,spot_direction);
 48 
 49     glEnable(GL_LIGHTING);
 50     glEnable(GL_LIGHT0);
 51     glEnable(GL_LIGHT1);
 52     glDepthFunc(GL_LESS);
 53     glEnable(GL_DEPTH_TEST);
 54     glFogi(GL_FOG_MODE, fogMode[fogfilter]);        // 設置霧氣的模式
 55 
 56     glFogfv(GL_FOG_COLOR, fogColor);            // 設置霧的顏色
 57 
 58     glFogf(GL_FOG_DENSITY, 0.55f);            // 設置霧的密度
 59 
 60     glHint(GL_FOG_HINT, GL_NICEST);            // 設置系統如何計算霧氣
 61 
 62     glFogf(GL_FOG_START, -10.0f);                // 霧氣的開始位置
 63 
 64     glFogf(GL_FOG_END, 10.0f);                // 霧氣的結束位置
 65 
 66     glEnable(GL_FOG);                    // 使用霧氣
 67 }
 68 void display(void)
 69 {
 70     GLfloat mat_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
 71     GLfloat mat_diffuse[]= { 0.8, 0.8, 0.8, 1.0 };
 72     GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
 73     GLfloat mat_shininess[] = { 60.0 };
 74 
 75     GLfloat light0_diffuse[]= { 0.0, 0.0, 1.0, 1.0};
 76 //    GLfloat light0_position[] = { 1.0, 1.0, 1.0, 0.0 };
 77 
 78     GLfloat light1_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
 79     GLfloat light1_diffuse[]= { 1.0, 0.0, 0.0, 1.0 };
 80     GLfloat light1_specular[] = { 1.0, 0.6, 0.6, 1.0 };
 81     GLfloat light1_position[] = { -3.0, -3.0, 3.0, 1.0 };
 82 
 83     GLfloat spot_direction[]={ 1.0,1.0,-1.0};
 84 
 85     GLfloat emitioncolor[] = { 0.0, 1.0, 0.0, 1.0 };
 86     glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
 87     glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
 88     glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
 89     glMaterialfv(GL_FRONT, GL_SHININESS,mat_shininess);
 90 //    glMaterialfv(GL_FRONT, GL_EMISSION, emitioncolor);
 91 
 92     glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
 93     glLightfv(GL_LIGHT0, GL_POSITION,light0_position);
 94 
 95     glLightfv(GL_LIGHT1, GL_AMBIENT, light1_ambient);
 96     glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_diffuse);
 97     glLightfv(GL_LIGHT1, GL_SPECULAR,light1_specular);
 98     glLightfv(GL_LIGHT1, GL_POSITION,light1_position);
 99 
100     glLightf (GL_LIGHT1, GL_SPOT_CUTOFF, 30.0);
101     glLightfv(GL_LIGHT1, GL_SPOT_DIRECTION,spot_direction);
102 
103     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER,GL_FALSE);
104 
105     glEnable(GL_LIGHTING);
106     glEnable(GL_LIGHT0);
107     glEnable(GL_LIGHT1);
108     glDepthFunc(GL_LESS);
109     glEnable(GL_DEPTH_TEST);
110 
111     glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
112     glPushMatrix();
113     glTranslatef(0.5,0,0);
114     glutSolidSphere(1.0,20,16);
115     glPopMatrix();
116     glFlush();
117 }
118 void reshape(int w,int h)
119 {
120     glViewport(0,0,(GLsizei)w,(GLsizei)h);
121     glMatrixMode(GL_PROJECTION);
122     glLoadIdentity();
123     if(w<=h)
124         glOrtho(-1.5,1.5,-1.5*(GLfloat)h/(GLfloat)w,1.5*(GLfloat)h/(GLfloat)w,-10.0,10.0);
125     else
126         glOrtho(-1.5*(GLfloat)w/(GLfloat)h,1.5*(GLfloat)w/(GLfloat)h,-1.5,1.5,-10.0,10.0);
127     glMatrixMode(GL_MODELVIEW);
128     glLoadIdentity();
129 }
130 void keyAction(unsigned char key,int x,int y)
131 {
132     switch(key) {
133     case 'q' :
134         light0_position[0]=light0_position[0]+1;
135         break;
136     case 'w' :
137         light0_position[1]=light0_position[1]+1;
138         break;
139     case 'e' :
140         light0_position[2]=light0_position[2]+1;
141         break;
142     case 'a' :
143         light0_position[0]=light0_position[0]-1;
144         break;
145     case 's' :
146         light0_position[1]=light0_position[1]-1;
147         break;
148     case 'd' :
149         light0_position[2]=light0_position[2]-1;
150         break;
151 
152     case 't':
153         fogfilter++;
154         fogfilter=fogfilter%3;
155         glFogi (GL_FOG_MODE, fogMode[fogfilter]);
156         break;
157     }
158     glutPostRedisplay();
159 }
160 int main(int argc,char **argv)
161 {
162     glutInit(&argc,argv);
163     glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);
164     glutInitWindowSize(500,500);
165     glutInitWindowPosition(100,100);
166     glutCreateWindow("hello,GL");
167     init();
168     glutDisplayFunc(display);
169     glutReshapeFunc(reshape);
170     glutKeyboardFunc(keyAction);
171     glutMainLoop();
172     return 0;
173 }

#include <GL/glut.h>
#include <iostream>
using namespace std;
GLfloat light0_position[] = { 1.0, 1.0, 1.0, 0.0 };

GLuint fogMode[]= { GL_EXP, GL_EXP2, GL_LINEAR };        // 霧氣的模式

GLuint fogfilter= 0;                    // 使用哪種霧氣

GLfloat fogColor[4]= {0.5f, 0.5f, 0.5f, 1.0f};        // 霧的顏色設爲白色
void init(void)
{

    glClearColor(0.5f,0.5f,0.5f,1.0f);

    GLfloat mat_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
    GLfloat mat_diffuse[]= { 0.8, 0.8, 0.8, 1.0 };
    GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
    GLfloat mat_shininess[] = { 60.0 };

    GLfloat light0_diffuse[]= { 0.0, 0.0, 1.0, 1.0};
//    GLfloat light0_position[] = { 1.0, 1.0, 1.0, 0.0 };

    GLfloat light1_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
    GLfloat light1_diffuse[]= { 1.0, 0.0, 0.0, 1.0 };
    GLfloat light1_specular[] = { 1.0, 0.6, 0.6, 1.0 };
    GLfloat light1_position[] = { -3.0, -3.0, 3.0, 1.0 };

    GLfloat spot_direction[]={ 1.0,1.0,-1.0};

    GLfloat emitioncolor[] = { 0.0, 1.0, 0.0, 1.0 };
    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,mat_shininess);
//    glMaterialfv(GL_FRONT, GL_EMISSION, emitioncolor);

    glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
    glLightfv(GL_LIGHT0, GL_POSITION,light0_position);

    glLightfv(GL_LIGHT1, GL_AMBIENT, light1_ambient);
    glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_diffuse);
    glLightfv(GL_LIGHT1, GL_SPECULAR,light1_specular);
    glLightfv(GL_LIGHT1, GL_POSITION,light1_position);

    glLightf (GL_LIGHT1, GL_SPOT_CUTOFF, 30.0);
    glLightfv(GL_LIGHT1, GL_SPOT_DIRECTION,spot_direction);

    glEnable(GL_LIGHTING);
    glEnable(GL_LIGHT0);
    glEnable(GL_LIGHT1);
    glDepthFunc(GL_LESS);
    glEnable(GL_DEPTH_TEST);
    glFogi(GL_FOG_MODE, fogMode[fogfilter]);        // 設置霧氣的模式

    glFogfv(GL_FOG_COLOR, fogColor);            // 設置霧的顏色

    glFogf(GL_FOG_DENSITY, 0.55f);            // 設置霧的密度

    glHint(GL_FOG_HINT, GL_NICEST);            // 設置系統如何計算霧氣

    glFogf(GL_FOG_START, -10.0f);                // 霧氣的開始位置

    glFogf(GL_FOG_END, 10.0f);                // 霧氣的結束位置

    glEnable(GL_FOG);                    // 使用霧氣
}
void display(void)
{
    GLfloat mat_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
    GLfloat mat_diffuse[]= { 0.8, 0.8, 0.8, 1.0 };
    GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
    GLfloat mat_shininess[] = { 60.0 };

    GLfloat light0_diffuse[]= { 0.0, 0.0, 1.0, 1.0};
//    GLfloat light0_position[] = { 1.0, 1.0, 1.0, 0.0 };

    GLfloat light1_ambient[]= { 0.2, 0.2, 0.2, 1.0 };
    GLfloat light1_diffuse[]= { 1.0, 0.0, 0.0, 1.0 };
    GLfloat light1_specular[] = { 1.0, 0.6, 0.6, 1.0 };
    GLfloat light1_position[] = { -3.0, -3.0, 3.0, 1.0 };

    GLfloat spot_direction[]={ 1.0,1.0,-1.0};

    GLfloat emitioncolor[] = { 0.0, 1.0, 0.0, 1.0 };
    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,mat_shininess);
//    glMaterialfv(GL_FRONT, GL_EMISSION, emitioncolor);

    glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
    glLightfv(GL_LIGHT0, GL_POSITION,light0_position);

    glLightfv(GL_LIGHT1, GL_AMBIENT, light1_ambient);
    glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_diffuse);
    glLightfv(GL_LIGHT1, GL_SPECULAR,light1_specular);
    glLightfv(GL_LIGHT1, GL_POSITION,light1_position);

    glLightf (GL_LIGHT1, GL_SPOT_CUTOFF, 30.0);
    glLightfv(GL_LIGHT1, GL_SPOT_DIRECTION,spot_direction);

    glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER,GL_FALSE);

    glEnable(GL_LIGHTING);
    glEnable(GL_LIGHT0);
    glEnable(GL_LIGHT1);
    glDepthFunc(GL_LESS);
    glEnable(GL_DEPTH_TEST);

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
    glTranslatef(0.5,0,0);
    glutSolidSphere(1.0,20,16);
    glPopMatrix();
    glFlush();
}
void reshape(int w,int h)
{
    glViewport(0,0,(GLsizei)w,(GLsizei)h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    if(w<=h)
        glOrtho(-1.5,1.5,-1.5*(GLfloat)h/(GLfloat)w,1.5*(GLfloat)h/(GLfloat)w,-10.0,10.0);
    else
        glOrtho(-1.5*(GLfloat)w/(GLfloat)h,1.5*(GLfloat)w/(GLfloat)h,-1.5,1.5,-10.0,10.0);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
}
void keyAction(unsigned char key,int x,int y)
{
    switch(key) {
    case 'q' :
        light0_position[0]=light0_position[0]+1;
        break;
    case 'w' :
        light0_position[1]=light0_position[1]+1;
        break;
    case 'e' :
        light0_position[2]=light0_position[2]+1;
        break;
    case 'a' :
        light0_position[0]=light0_position[0]-1;
        break;
    case 's' :
        light0_position[1]=light0_position[1]-1;
        break;
    case 'd' :
        light0_position[2]=light0_position[2]-1;
        break;

    case 't':
        fogfilter++;
        fogfilter=fogfilter%3;
        glFogi (GL_FOG_MODE, fogMode[fogfilter]);
        break;
    }
    glutPostRedisplay();
}
int main(int argc,char **argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);
    glutInitWindowSize(500,500);
    glutInitWindowPosition(100,100);
    glutCreateWindow("hello,GL");
    init();
    glutDisplayFunc(display);
    glutReshapeFunc(reshape);
    glutKeyboardFunc(keyAction);
    glutMainLoop();
    return 0;
}

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