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/*
* 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);
}
void bindTex(ofTexture &tex) {
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 unbindTex(ofTexture &tex) {
tex.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;
if ((i==7)&&(j==3)) { //draw special square
glVertex3f(cx+8, 0, cz-8);
glVertex3f(cx+8, 0, cz+8);
glVertex3f(cx+4, 0, cz+4);
glVertex3f(cx+4, 0, cz-4);
glVertex3f(cx+4, 0, cz+4);
glVertex3f(cx+8, 0, cz+8);
glVertex3f(cx-8, 0, cz+8);
glVertex3f(cx-4, 0, cz+4);
glVertex3f(cx-4, 0, cz-4);
glVertex3f(cx-4, 0, cz+4);
glVertex3f(cx-8, 0, cz+8);
glVertex3f(cx-8, 0, cz-8);
glVertex3f(cx+8, 0, cz-8);
glVertex3f(cx+4, 0, cz-4);
glVertex3f(cx-4, 0, cz-4);
glVertex3f(cx-8, 0, cz-8);
}
else {
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();
}
void drawCylinder(float r,float h,float x,float y,float z) {
glPushMatrix();
glTranslated(x,y,z);
glBegin(GL_QUADS);
float step=TWO_PI/50.0;
float txstep=1.0/50.0;
for (float i=0,j=0;i<=TWO_PI;i+=step,j+=txstep) {
glTexCoord2f(j,0); glVertex3f(cos(i)*r, 0, sin(i)*r);
glTexCoord2f(j,1); glVertex3f(cos(i)*r, -h, sin(i)*r);
glTexCoord2f(j+txstep,1); glVertex3f(cos(i+step)*r, -h, sin(i+step)*r);
glTexCoord2f(j+txstep,0); glVertex3f(cos(i+step)*r, 0, sin(i+step)*r);
}
glEnd();
glPopMatrix();
}
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