1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
| #include <GL/glut.h>
static int kv= 1;
static int kd = 1;
void reshape(int w, int h)
{
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0, w, 0, h);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
static void key(unsigned char key, int x, int y)
{
switch (key)
{
case 27 :
case 'q':
exit(0);
break;
case '+':
if (kv < 75 & kd < 75)
{
kv += 1;
kd += 1;
}
break;
case '-':
if (kv > -5 & kd > -5)
{
kv -= 1;
kd -= 1;
}
break;
}
glutPostRedisplay();
}
void display()
{
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
GLfloat light0_diffuse[] = {1, 1, 1, 1.0};
//GLfloat light0_direction[] = {0.5, 1, 1, 0.005};
GLfloat light0_direction[] = {0.5, 0.5, 0.5, 0.005};
GLfloat light0_spec[] = {1, 1, 1, 1.0};
glEnable(GL_LIGHT0);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
glLightfv(GL_LIGHT0, GL_SPECULAR, light0_spec);
glLightfv(GL_LIGHT0, GL_POSITION, light0_direction);
GLfloat spec[] = {1, 1, 1, 1.0};
GLfloat ambient[] = {0.0, 0.0, 0.0, 1.0};
GLfloat dif[] = {0.588235, 0.670588, 0.729412, 1.0};
GLfloat emis[] = {0.0, 0.0, 0.0, 1.0};
glMaterialfv(GL_FRONT, GL_SPECULAR, spec);
glMaterialf(GL_FRONT, GL_SHININESS, 5);
glMaterialfv(GL_FRONT, GL_AMBIENT, ambient);
glMaterialfv(GL_FRONT, GL_DIFFUSE, dif);
glMaterialfv(GL_FRONT, GL_EMISSION, emis);
glBegin(GL_POLYGON);
glVertex2i(150 - kv,300);
glVertex2i(200, 250-kv);
glVertex2i(300+kv, 300);
glVertex2i(275, 350+kv);
glVertex2i(200, 350+kv);
glEnd();
glDisable(GL_LIGHT0);
glutSwapBuffers();
}
int main (int argc, char * argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutInitWindowSize(800, 600);
glutInitWindowPosition(100,100);
glutCreateWindow("Glass");
glutKeyboardFunc(key);
glClearColor (1, 1, 1, 1);
glEnable(GL_LIGHTING);
glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
glEnable(GL_NORMALIZE);
glEnable(GL_LIGHTING);
glDisable(GL_COLOR_MATERIAL);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
float global_ambient[] = { 0.2, 0.2, 0.2, 1.0 };
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, global_ambient);
glutReshapeFunc(reshape);
glutDisplayFunc(display);
glutMainLoop();
return 0;
} |
