ColorHSLx<float, Colorf>::ColorHSLx(const Colorf &color)
{
float red = color.get_red();
float green = color.get_green();
float blue = color.get_blue();
const float min_value = min(red, min(blue, green));
const float max_value = max(red, max(blue, green));
a = color.get_alpha();
l = (max_value + min_value) / 2.0f;
if (min_value == max_value)
{
h = 0.0f;
s = 0.0f;
return;
}
if (l <= 0.5f)
{
s = (max_value - min_value) / (min_value + max_value);
}
else
{
s = (max_value - min_value) / (2.0f - (min_value + max_value));
}
if (max_value == red)
{
h = (60.0f * (green - blue)) / (max_value - min_value);
}
else if (max_value == green)
{
h = 120.0f + (60.0f * (blue - red)) / (max_value - min_value);
}
else
{
h = 240.0f + (60.0f * (red - green)) / (max_value - min_value);
}
}
ColorHSVx<float, Colorf>::ColorHSVx(const Colorf &color)
{
float red = color.get_red();
float green = color.get_green();
float blue = color.get_blue();
const float min_value = min(red,min(blue, green));
const float max_value = max(red,max(blue, green));
a = color.get_alpha();
if (min_value == max_value)
{
h = 0.0f;
s = 0.0f;
v = min_value;
return;
}
s = max_value != 0.0f ? (max_value - min_value) / max_value : 0.0f;
v = max_value;
float r = float(max_value - red) / (max_value - min_value);
float g = float(max_value - green) / (max_value - min_value);
float b = float(max_value - blue) / (max_value - min_value);
if (max_value == red)
{
h = (60.0f * (b - g));
}
else if (max_value == green)
{
h = (60.0f * (2.0f + r - b));
}
else
{
h = (60.0f * (4.0f + g - r));
}
}
void CollisionOutline::draw(
float x,
float y,
const Colorf &color,
Canvas &canvas)
{
GraphicContext &gc = canvas.get_gc();
// Draw collision outline (Contours are assumed as closed polygons, hence we use line-loop)
for(unsigned int i = 0; i < impl->contours.size(); i++)
{
// Draw the contour
unsigned int numpoints = impl->contours[i].get_points().size();
for(unsigned int s = 0; s < numpoints; s++)
{
const Pointf &p1 = impl->contours[i].get_points()[s];
const Pointf &p2 = impl->contours[i].get_points()[(s+1) % numpoints];
canvas.draw_line(x + p1.x + 0.5f, y + p1.y + 0.5f, x + p2.x + 0.5f, y + p2.y + 0.5f, color);
}
}
Colorf colorinv(1.0f-color.get_red(),1.0f-color.get_green(),1.0f-color.get_blue());
for(unsigned int i = 0; i < impl->contours.size(); i++)
{
unsigned int numpoints = impl->contours[i].get_points().size();
// Add points (as opposite color)
for(unsigned int s1 = 0; s1 < numpoints; s1++)
{
const Pointf &p1 = impl->contours[i].get_points()[s1];
canvas.draw_point(x + p1.x + 0.5f, y + p1.y + 0.5f, colorinv);
}
}
}