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
|
/*
* mapUtils.h
*
* Created by Tim Redfern on 20/12/2011.
* global utils for projection mapping
*
*/
#include "ofMain.h"
//texture binding with normalised coords
void bindTexture(ofBaseHasTexture &t) {
ofTexture &tex = t.getTextureReference();
tex.bind();
glMatrixMode(GL_TEXTURE);
glPushMatrix();
glLoadIdentity();
ofTextureData texData = tex.getTextureData();
if(texData.textureTarget == GL_TEXTURE_RECTANGLE_ARB) {
glScalef(tex.getWidth(), tex.getHeight(), 1.0f);
} else {
glScalef(tex.getWidth() / texData.tex_w, tex.getHeight() / texData.tex_h, 1.0f);
}
glMatrixMode(GL_MODELVIEW);
}
void unbindTexture(ofBaseHasTexture &t) {
t.getTextureReference().unbind();
glMatrixMode(GL_TEXTURE);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
ofPoint distort(ofPoint pt,float d){
//normalised coords -1..1, d
float r=pow(pow(pow(pt.x,2.0f)+pow(pt.y,2.0f),0.5f),1.0f+d);
float a=atan2f(pt.x,pt.y);
return ofPoint(r*sin(a),r*cos(a));
};
void drawBox(float size) {
// this func just draws a perfectly normal box with some texture coordinates
glBegin(GL_QUADS);
// Front Face
glTexCoord2f(0.0f, 0.0f); glVertex3f(-size, -size, size); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f( size, -size, size); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( size, size, size); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f(-size, size, size); // Top Left Of The Texture and Quad
// Back Face
glTexCoord2f(1.0f, 0.0f); glVertex3f(-size, -size, -size); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f(-size, size, -size); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( size, size, -size); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( size, -size, -size); // Bottom Left Of The Texture and Quad
// Top Face
glTexCoord2f(0.0f, 1.0f); glVertex3f(-size, size, -size); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f(-size, size, size); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f( size, size, size); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( size, size, -size); // Top Right Of The Texture and Quad
// Bottom Face
glTexCoord2f(1.0f, 1.0f); glVertex3f(-size, -size, -size); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( size, -size, -size); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( size, -size, size); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f(-size, -size, size); // Bottom Right Of The Texture and Quad
// Right face
glTexCoord2f(1.0f, 0.0f); glVertex3f( size, -size, -size); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f( size, size, -size); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f( size, size, size); // Top Left Of The Texture and Quad
glTexCoord2f(0.0f, 0.0f); glVertex3f( size, -size, size); // Bottom Left Of The Texture and Quad
// Left Face
glTexCoord2f(0.0f, 0.0f); glVertex3f(-size, -size, -size); // Bottom Left Of The Texture and Quad
glTexCoord2f(1.0f, 0.0f); glVertex3f(-size, -size, size); // Bottom Right Of The Texture and Quad
glTexCoord2f(1.0f, 1.0f); glVertex3f(-size, size, size); // Top Right Of The Texture and Quad
glTexCoord2f(0.0f, 1.0f); glVertex3f(-size, size, -size); // Top Left Of The Texture and Quad
glEnd();
}
void drawBoard(float x,float y,float z) {
glPushMatrix();
glTranslated(x,y,z);
glBegin(GL_QUADS);
int cx,cz;
for (int i=0;i<8;i++) {
for (int j=0;j<4;j++) {
cx=((i%2)*16)+(j*32)-56;
cz=(i*16)-56;
glVertex3f(cx+8, 0, cz-8);
glVertex3f(cx+8, 0, cz+8);
glVertex3f(cx-8, 0, cz+8);
glVertex3f(cx-8, 0, cz-8);
}
}
glEnd();
glPopMatrix();
}
|
