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Diffstat (limited to 'Minecraft.World/Color.cpp')
| -rw-r--r-- | Minecraft.World/Color.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/Minecraft.World/Color.cpp b/Minecraft.World/Color.cpp new file mode 100644 index 00000000..256e9017 --- /dev/null +++ b/Minecraft.World/Color.cpp @@ -0,0 +1,97 @@ +#include "stdafx.h" + +#include "Color.h" + +//Creates an opaque sRGB color with the specified red, green, and blue values in the range (0.0 - 1.0). +//Alpha is defaulted to 1.0. The actual color used in rendering depends on finding the best match given the color space +//available for a particular output device. +//Parameters: +//r - the red component +//g - the green component +//b - the blue component +//Throws: +//IllegalArgumentException - if r, g or b are outside of the range 0.0 to 1.0, inclusive +Color::Color( float r, float g, float b) +{ + assert( r >= 0.0f && r <= 1.0f ); + assert( g >= 0.0f && g <= 1.0f ); + assert( b >= 0.0f && b <= 1.0f ); + + //argb + colour = ( (0xFF<<24) | ( (int)(r*255)<<16 ) | ( (int)(g*255)<<8 ) | ( (int)(b*255) ) ); +} + +Color::Color( int r, int g, int b) +{ + colour = ( (0xFF<<24) | ( (r&0xff)<<16 ) | ( (g&0xff)<<8 ) | ( (b&0xff) ) ); +} + + +//Creates a Color object based on the specified values for the HSB color model. +//The s and b components should be floating-point values between zero and one (numbers in the range 0.0-1.0). +//The h component can be any floating-point number. The floor of this number is subtracted from it to create a fraction between 0 and 1. +//This fractional number is then multiplied by 360 to produce the hue angle in the HSB color model. +// +//Parameters: +//h - the hue component +//s - the saturation of the color +//b - the brightness of the color +//Returns: +//a Color object with the specified hue, saturation, and brightness. +Color Color::getHSBColor(float hue, float saturation, float brightness) +{ + int r = 0, g = 0, b = 0; + if (saturation == 0) + { + r = g = b = (int) (brightness * 255.0f + 0.5f); + } + else + { + float h = (hue - (float)floor(hue)) * 6.0f; + float f = h - (float)floor(h); + float p = brightness * (1.0f - saturation); + float q = brightness * (1.0f - saturation * f); + float t = brightness * (1.0f - (saturation * (1.0f - f))); + switch ((int) h) + { + case 0: + r = (int) (brightness * 255.0f + 0.5f); + g = (int) (t * 255.0f + 0.5f); + b = (int) (p * 255.0f + 0.5f); + break; + case 1: + r = (int) (q * 255.0f + 0.5f); + g = (int) (brightness * 255.0f + 0.5f); + b = (int) (p * 255.0f + 0.5f); + break; + case 2: + r = (int) (p * 255.0f + 0.5f); + g = (int) (brightness * 255.0f + 0.5f); + b = (int) (t * 255.0f + 0.5f); + break; + case 3: + r = (int) (p * 255.0f + 0.5f); + g = (int) (q * 255.0f + 0.5f); + b = (int) (brightness * 255.0f + 0.5f); + break; + case 4: + r = (int) (t * 255.0f + 0.5f); + g = (int) (p * 255.0f + 0.5f); + b = (int) (brightness * 255.0f + 0.5f); + break; + case 5: + r = (int) (brightness * 255.0f + 0.5f); + g = (int) (p * 255.0f + 0.5f); + b = (int) (q * 255.0f + 0.5f); + break; + } + } + + + return Color( r, g, b ); +} + +int Color::getRGB() +{ + return colour; +}
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