mirror of https://github.com/axmolengine/axmol.git
150 lines
3.6 KiB
C++
150 lines
3.6 KiB
C++
#include "CCControlUtils.h"
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#include "CCPointExtension.h"
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NS_CC_BEGIN
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CCSprite* CCControlUtils::addSpriteToTargetWithPosAndAnchor(const char* spriteName, CCNode * target, CCPoint pos, CCPoint anchor)
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{
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CCSprite *sprite =CCSprite::spriteWithSpriteFrameName(spriteName);
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if (!sprite)
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return NULL;
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sprite->setPosition(pos);
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sprite->setAnchorPoint(anchor);
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target->addChild(sprite);
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return sprite;
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}
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HSV CCControlUtils::HSVfromRGB(RGBA value)
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{
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HSV out;
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double min, max, delta;
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min = value.r < value.g ? value.r : value.g;
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min = min < value.b ? min : value.b;
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max = value.r > value.g ? value.r : value.g;
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max = max > value.b ? max : value.b;
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out.v = max; // v
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delta = max - min;
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if( max > 0.0 )
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{
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out.s = (delta / max); // s
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} else
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{
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// r = g = b = 0 // s = 0, v is undefined
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out.s = 0.0;
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out.h = -1; // its now undefined (don't know if setting to NAN is a good idea)
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return out;
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}
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if( value.r >= max ) // > is bogus, just keeps compilor happy
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{
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out.h = ( value.g - value.b ) / delta; // between yellow & magenta
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} else
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{
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if( value.g >= max )
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out.h = 2.0 + ( value.b - value.r ) / delta; // between cyan & yellow
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else
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out.h = 4.0 + ( value.r - value.g ) / delta; // between magenta & cyan
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}
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out.h *= 60.0; // degrees
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if( out.h < 0.0 )
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out.h += 360.0;
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return out;
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}
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RGBA CCControlUtils::RGBfromHSV(HSV value)
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{
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double hh, p, q, t, ff;
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long i;
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RGBA out;
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out.a = 1;
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if (value.s <= 0.0) // < is bogus, just shuts up warnings
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{
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if (isnan(value.h)) // value.h == NAN
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{
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out.r = value.v;
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out.g = value.v;
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out.b = value.v;
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return out;
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}
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// error - should never happen
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out.r = 0.0;
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out.g = 0.0;
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out.b = 0.0;
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return out;
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}
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hh = value.h;
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if(hh >= 360.0) hh = 0.0;
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hh /= 60.0;
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i = (long)hh;
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ff = hh - i;
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p = value.v * (1.0 - value.s);
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q = value.v * (1.0 - (value.s * ff));
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t = value.v * (1.0 - (value.s * (1.0 - ff)));
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switch(i)
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{
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case 0:
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out.r = value.v;
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out.g = t;
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out.b = p;
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break;
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case 1:
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out.r = q;
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out.g = value.v;
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out.b = p;
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break;
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case 2:
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out.r = p;
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out.g = value.v;
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out.b = t;
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break;
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case 3:
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out.r = p;
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out.g = q;
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out.b = value.v;
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break;
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case 4:
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out.r = t;
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out.g = p;
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out.b = value.v;
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break;
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case 5:
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default:
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out.r = value.v;
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out.g = p;
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out.b = q;
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break;
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}
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return out;
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}
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CCRect CCControlUtils::CCRectUnion(const CCRect& src1, const CCRect& src2)
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{
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CCRect result;
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float x1 = MIN(CCRect::CCRectGetMinX(src1), CCRect::CCRectGetMinX(src2));
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float y1 = MIN(CCRect::CCRectGetMinY(src1), CCRect::CCRectGetMinY(src2));
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float x2 = MAX(CCRect::CCRectGetMaxX(src1), CCRect::CCRectGetMaxX(src2));
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float y2 = MAX(CCRect::CCRectGetMaxY(src1), CCRect::CCRectGetMaxY(src2));
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result.origin=ccp(x1,x2);
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result.size=CCSizeMake(x2-x1, y2-y1);
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return result;
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}
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NS_CC_END
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