RegularPolygonObject::RegularPolygonObject(SceneMain* parentScene, ShaderProgram* program, vec3f pos, vec3f scale, unsigned int sides) : GameObject(parentScene, pos, scale) {
std::vector<Vertex::Element> elements;
elements.push_back(Vertex::Element(Vertex::Attribute::Position , Vertex::Element::Float, 3));
elements.push_back(Vertex::Element(Vertex::Attribute::Color , Vertex::Element::Float, 3));
Vertex::Format format(elements);
Mesh* mesh = new Mesh(format,0,false);
struct Vertex {
Vertex(vec3f pos, vec3f color) : pos(pos) , color(color) {}
vec3f pos, color;
};
float angle = 0;
float angleStep = 2.0 * M_PI * 1.0f / sides;
std::vector<Vertex> data;
for (unsigned int i = 0; i < sides; ++i) {
data.push_back(Vertex(vec3f(0.0, 0.0, 0.0), vec3f(1.0, 1.0, 1.0)));
data.push_back(Vertex(vec3f(std::cos(angle), std::sin(angle),0.0), HuetoRGB(angle))); angle += angleStep;
data.push_back(Vertex(vec3f(std::cos(angle), std::sin(angle),0.0), HuetoRGB(angle)));
}
mesh->setVertexData(&data[0],data.size());
poly.mesh = mesh;
if (program == NULL)
poly.program = parentScene->shaderColor;
else
poly.program = program;
}
void HLStoRGB( double H, double L, double S, COLOR& c) {
double m1, m2;
if(S==0) {
c.r=c.g=c.b=(float)L;
} else {
if(L <=0.5) {
m2 = L*(1.0+S);
} else {
m2 = L+S-L*S;
}
m1 = 2.0*L-m2;
c.r = (float)HuetoRGB(m1,m2,(H+1.0/3.0));
c.g = (float)HuetoRGB(m1,m2,H);
c.b = (float)HuetoRGB(m1,m2,H-1.0/3.0);
}
}
Drawing::Color CPowerColorPickerCtrl::HLStoRGB( double H, double L, double S )
{
double r,g,b;
double m1, m2;
if(S==0) {
r=g=b=L;
} else {
if(L <=0.5)
m2 = L*(1.0+S);
else
m2 = L+S-L*S;
m1 = 2.0*L-m2;
r = HuetoRGB(m1,m2,H+1.0/3.0);
g = HuetoRGB(m1,m2,H);
b = HuetoRGB(m1,m2,H-1.0/3.0);
}
if( r > 1.0f )
r = 1.0f;
if( r < 0.0f )
r = 0.0f;
if( g > 1.0f )
g = 1.0f;
if( g < 0.0f )
g = 0.0f;
if( b > 1.0f )
b = 1.0f;
if( b < 0.0f )
b = 0.0f;
Drawing::Color color = Color::FromArgb((int)(r*255), (int)(g*255), (int)(b*255));
return color;
}
