vector<ofColor> ofxColourTheory::createRangeFromAnalogous(ofColor src){
vector<ofVec2f> tones;
tones.push_back(ofVec2f(1, 2.2f));
tones.push_back(ofVec2f(2, 1));
tones.push_back(ofVec2f(-1, -0.5f));
tones.push_back(ofVec2f(-2, 1));
float contrast = 0.25f;
float theta = 10 *PI / 180.0;
contrast = clipNormalized(contrast);
vector<ofColor> colList;
colList.push_back(src);
for (int i=0;i<tones.size();i++) {
ofColor c = rotateRYB(src,(int) (theta * tones[i].x));
float t = 0.44f - tones[i].y * 0.1f;
if ((float) src.getBrightness()/255.0 - contrast * tones[i].y < t) {
c.setBrightness(t*255.0);
} else {
c.setBrightness(src.getBrightness() - (contrast * tones[i].y)*255.0);
}
c.setSaturation(c.getSaturation()-0.05f*255.0);
colList.push_back(c);
}
return colList;
}
float distanceBetween(ofColor a,ofColor b) {
float hue = a.getHue()/255.0f *TWO_PI;
float hue2 = b.getHue()/255.0f * TWO_PI;
ofVec3f v1((cos(hue) * a.getSaturation()/255.0f),
(sin(hue) * a.getSaturation()/255.0f), a.getBrightness()/255.0f);
ofVec3f v2((cos(hue2) * b.getSaturation()/255.0f),
(sin(hue2) * b.getSaturation()/255.0f), b.getBrightness()/255.0f);
return v1.distance(v2);
}
ofColor rotateRYB(ofColor col,int theta) {
float h = (float) col.getHue()/255.0 * 360;
vector<float> hsb;
hsb.push_back((float) col.getHue()/255.0) ;
hsb.push_back((float) col.getSaturation()/255.0) ;
hsb.push_back((float) col.getBrightness()/255.0) ;
theta %= 360;
float resultHue = 0;
vector<ofVec2f> RYB_WHEEL = getRYB_WHEEL();
for (int i = 0; i < RYB_WHEEL.size() - 1; i++) {
ofVec2f p = RYB_WHEEL[i];
ofVec2f q = RYB_WHEEL[i + 1];
if (q.y < p.y) {
q.y += 360;
}
if (p.y <= h && h <= q.y) {
resultHue = p.x + (q.x - p.x) * (h - p.y) / (q.y - p.y);
break;
}
}
//fmod = %, ie remainder
// And the user-given angle (e.g. complement).
resultHue = fmod((resultHue + theta),360);
// For the given angle, find out what hue is
// located there on the artistic color wheel.
for (int i = 0; i < RYB_WHEEL.size() - 1; i++) {
ofVec2f p = RYB_WHEEL[i];
ofVec2f q = RYB_WHEEL[i + 1];
if (q.y < p.y) {
q.y += 360;
}
if (p.x <= resultHue && resultHue <= q.x) {
h = p.y + (q.y - p.y) * (resultHue - p.x) / (q.x - p.x);
break;
}
}
hsb[0] = fmod(h, 360) / 360.0f;
ofColor newCol;
newCol.setHsb(hsb[0]*255, hsb[1]*255, hsb[2]*255);
return newCol;
}
void testApp::drawCube(float x_,float y_,float z_,ofColor top_, ofColor bottom_, ofColor front_, ofColor back_, ofColor left_, ofColor right_){
float x = x_/2;
float y = y_/2;
float z = z_/2;
glBegin(GL_QUADS);
pSetHSV(top_.getHue(),top_.getSaturation(),top_.getBrightness());
glColor3f(cols[0],cols[1],cols[2]);
glVertex3f( x, y,-z); // Top Right Of The Quad (Top)
glVertex3f(-x, y,-z); // Top Left Of The Quad (Top)
glVertex3f(-x, y, z); // Bottom Left Of The Quad (Top)
glVertex3f( x, y, z); // Bottom Right Of The Quad (Top)
pSetHSV(bottom_.getHue(),bottom_.getSaturation(),bottom_.getBrightness());
glColor3f(cols[0],cols[1],cols[2]);
glVertex3f( x,-y, z); // Top Right Of The Quad (Bottom)
glVertex3f(-x,-y, z); // Top Left Of The Quad (Bottom)
glVertex3f(-x,-y,-z); // Bottom Left Of The Quad (Bottom)
glVertex3f( x,-y,-z); // Bottom Right Of The Quad (Bottom)
pSetHSV(front_.getHue(),front_.getSaturation(),front_.getBrightness());
glColor3f(cols[0],cols[1],cols[2]);
glVertex3f( x, y, z); // Top Right Of The Quad (Front)
glVertex3f(-x, y, z); // Top Left Of The Quad (Front)
pSetHSV(60,100,100);
glColor3f(cols[0],cols[1],cols[2]);
glVertex3f(-x,-y, z); // Bottom Left Of The Quad (Front)
glVertex3f( x,-y, z); // Bottom Right Of The Quad (Front)
pSetHSV(back_.getHue(),back_.getSaturation(),back_.getBrightness());
glColor3f(cols[0],cols[1],cols[2]);
glVertex3f( x,-y,-z); // Bottom Left Of The Quad (Back)
glVertex3f(-x,-y,-z); // Bottom Right Of The Quad (Back)
glVertex3f(-x, y,-z); // Top Right Of The Quad (Back)
glVertex3f( x, y,-z); // Top Left Of The Quad (Back)
pSetHSV(left_.getHue(),left_.getSaturation(),left_.getBrightness());
glColor3f(cols[0],cols[1],cols[2]);
glVertex3f(-x, y, z); // Top Right Of The Quad (Left)
glVertex3f(-x, y,-z); // Top Left Of The Quad (Left)
glVertex3f(-x,-y,-z); // Bottom Left Of The Quad (Left)
glVertex3f(-x,-y, z); // Bottom Right Of The Quad (Left)
pSetHSV(right_.getHue(),right_.getSaturation(),right_.getBrightness());
glColor3f(cols[0],cols[1],cols[2]);
glVertex3f( x, y,-z); // Top Right Of The Quad (Right)
glVertex3f( x, y, z); // Top Left Of The Quad (Right)
glVertex3f( x,-y, z); // Bottom Left Of The Quad (Right)
glVertex3f( x,-y,-z); // Bottom Right Of The Quad (Right)
glEnd(); // Done Drawing The Quad
}
void ofPixels::setColor(int x, int y, ofColor color) {
int index = getPixelIndex(x, y);
if( bytesPerPixel == 1 ){
pixels[index] = color.getBrightness();
}else if( bytesPerPixel == 3 ){
pixels[index] = color.r;
pixels[index+1] = color.g;
pixels[index+2] = color.b;
}else if( bytesPerPixel == 4 ){
pixels[index] = color.r;
pixels[index+1] = color.g;
pixels[index+2] = color.b;
pixels[index+3] = color.a;
}
}
//--------------------------------------------------------------
// sort by brightness function
bool sortBrightness( ofColor a, ofColor b){
return( a.getBrightness() < b.getBrightness() );
}
//--------------------------------------------------------------
//Sort function for stl::sort http://www.cplusplus.com/reference/algorithm/sort/
bool sortColorFunction (ofColor i,ofColor j) {
return (i.getBrightness()<j.getBrightness());
}