axmol/cocos2dx/cocoa/CCGeometry.cpp

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#include "CCGeometry.h"

// implementation of CCPoint
namespace   cocos2d {

CCPoint::CCPoint(void)
{
    x = 0;
    y = 0;
}

CCPoint::CCPoint(float x, float y)
{
    this->x = x;
    this->y = y;
}

bool CCPoint::CCPointEqualToPoint(const CCPoint& point1, const CCPoint& point2)
{
    return ((point1.x == point2.x) && (point1.y == point2.y));
}

// implementation of CCSize

CCSize::CCSize(void)
{
    width = 0;
    height = 0;
}

CCSize::CCSize(float width, float height)
{
    this->width = width;
    this->height = height;
}

bool CCSize::CCSizeEqualToSize(const CCSize& size1, const CCSize& size2)
{
    return ((size1.width == size2.width) && (size1.height == size2.height));
}

// implementation of CCRect

CCRect::CCRect(void)
{
    origin.x = 0;
    origin.y = 0;

    size.width = 0;
    size.height = 0;
}

CCRect::CCRect(float x, float y, float width, float height)
{
    // Only support that, the width and height > 0
    assert(width >= 0 && height >= 0);

    origin.x = x;
    origin.y = y;

    size.width = width;
    size.height = height;
}

bool CCRect::CCRectEqualToRect(const CCRect& rect1, const CCRect& rect2)
{
    return (CCPoint::CCPointEqualToPoint(rect1.origin, rect2.origin)
            && CCSize::CCSizeEqualToSize(rect1.size, rect2.size));
}

CGFloat CCRect::CCRectGetMaxX(const CCRect& rect)
{
    return rect.origin.x + rect.size.width;
}

CGFloat CCRect::CCRectGetMidX(const CCRect& rect)
{
    return (float)(rect.origin.x + rect.size.width / 2.0);
}

CGFloat CCRect::CCRectGetMinX(const CCRect& rect)
{
    return rect.origin.x;
}

CGFloat CCRect::CCRectGetMaxY(const CCRect& rect)
{
    return rect.origin.y + rect.size.height;
}

CGFloat CCRect::CCRectGetMidY(const CCRect& rect)
{
    return (float)(rect.origin.y + rect.size.height / 2.0);
}

CGFloat CCRect::CCRectGetMinY(const CCRect& rect)
{
    return rect.origin.y;
}

bool CCRect::CCRectContainsPoint(const CCRect& rect, const CCPoint& point)
{
    bool bRet = false;

    if (point.x >= CCRectGetMinX(rect) && point.x <= CCRectGetMaxX(rect)
            && point.y >= CCRectGetMinY(rect) && point.y <= CCRectGetMaxY(rect))
    {
        bRet = true;
    }

    return bRet;
}

bool CCRect::CCRectIntersectsRect(const CCRect& rectA, const CCRect& rectB)
{
    return !(CCRectGetMaxX(rectA) < CCRectGetMinX(rectB)||
             CCRectGetMaxX(rectB) < CCRectGetMinX(rectA)||
             CCRectGetMaxY(rectA) < CCRectGetMinY(rectB)||
             CCRectGetMaxY(rectB) < CCRectGetMinY(rectA));
}

} // namespace cocos2d