code for cycling through hues (colors)
Author
anyone willing to share some code that cycles through through the color hue spectrum
thanks zed
Funny, I just put this together yesterday. It's written for D3D9, but the only change you'd need to fit any other API is on the last line, converting R, G & B to your colour format.
My code takes a hue in the range (0.0, 1.0), assumes your lightness and saturation are both fixed at 1.0 (maximum) and returns a RGB DWORD. To cycle using this function should be trivial.
It's not optimised and there's a fair bit of casting involved, but it's not exactly slow either. If you're using this a lot you may want to make some adjustments.
If you need more control, Wikipedia documents the HSL-RGB conversion thoroughly.
Regards
Admiral
My code takes a hue in the range (0.0, 1.0), assumes your lightness and saturation are both fixed at 1.0 (maximum) and returns a RGB DWORD. To cycle using this function should be trivial.
DWORD SaturatedHue(float Hue) { float r, g, b; r = Hue + 1.0f / 3; g = Hue; b = Hue - 1.0f / 3; if (r > 1) r -= 1; if (b < 0) b += 1; if (r < 0.16667f) { r = 1.0f - 6.0f * r; } else if (r < 0.5f) { r = 0; } else if (r < 0.66667f) { r = 6.0f * r - 3.0f; } else r = 1; if (g < 0.16667f) { g = 1.0f - 6.0f * g; } else if (g < 0.5f) { g = 0; } else if (g < 0.66667f) { g = 6.0f * g - 3.0f; } else g = 1; if (b < 0.16667f) { b = 1.0f - 6.0f * b; } else if (b < 0.5f) { b = 0; } else if (b < 0.66667f) { b = 6.0f * b - 3.0f; } else b = 1; return D3DCOLOR_ARGB(0xFF, (byte) (r * 0xFF), (byte) (g * 0xFF), (byte) (b * 0xFF));}It's not optimised and there's a fair bit of casting involved, but it's not exactly slow either. If you're using this a lot you may want to make some adjustments.
If you need more control, Wikipedia documents the HSL-RGB conversion thoroughly.
Regards
Admiral
You need to convert the colors to another color model (i.e. HSV). This allows easy shifting of the hue. Then convert the colors back.
For the conversion see here:
http://www.cs.rit.edu/~ncs/color/t_convert.html
For the conversion see here:
http://www.cs.rit.edu/~ncs/color/t_convert.html
Author
thanks guys
sorry about being lazy, but i just wanna see if this looks better with my ingame menus than what i have at present, ie i didnt wanna spend time implimenting something that looks crap so i wouldnt use
sorry about being lazy, but i just wanna see if this looks better with my ingame menus than what i have at present, ie i didnt wanna spend time implimenting something that looks crap so i wouldnt use
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