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00023 #include "CGGeometry.h"
00024
00025 #define _CGAffineTransformMake(a_, b_, c_, d_, tx_, ty_) { a:a_, b:b_, c:c_, d:d_, tx:tx_, ty:ty_ }
00026 #define _CGAffineTransformMakeIdentity() _CGAffineTransformMake(1.0, 0.0, 0.0, 1.0, 0.0, 0.0)
00027 #define _CGAffineTransformMakeCopy(aTransform) _CGAffineTransformMake(aTransform.a, aTransform.b, aTransform.c, aTransform.d, aTransform.tx, aTransform.ty)
00028
00029 #define _CGAffineTransformMakeScale(sx, sy) _CGAffineTransformMake(sx, 0.0, 0.0, sy, 0.0, 0.0)
00030 #define _CGAffineTransformMakeTranslation(tx, ty) _CGAffineTransformMake(1.0, 0.0, 0.0, 1.0, tx, ty)
00031
00032 #define _CGAffineTransformTranslate(aTransform, tx, ty) _CGAffineTransformMake(aTransform.a, aTransform.b, aTransform.c, aTransform.d, aTransform.tx + aTransform.a * tx + aTransform.c * ty, aTransform.ty + aTransform.b * tx + aTransform.d * ty)
00033 #define _CGAffineTransformScale(aTransform, sx, sy) _CGAffineTransformMake(aTransform.a * sx, aTransform.b * sx, aTransform.c * sy, aTransform.d * sy, aTransform.tx, aTransform.ty)
00034
00035 #define _CGAffineTransformConcat(lhs, rhs) _CGAffineTransformMake(lhs.a * rhs.a + lhs.b * rhs.c, lhs.a * rhs.b + lhs.b * rhs.d, lhs.c * rhs.a + lhs.d * rhs.c, lhs.c * rhs.b + lhs.d * rhs.d, lhs.tx * rhs.a + lhs.ty * rhs.c + rhs.tx, lhs.tx * rhs.b + lhs.ty * rhs.d + rhs.ty)
00036
00037 #define _CGPointApplyAffineTransform(aPoint, aTransform) _CGPointMake(aPoint.x * aTransform.a + aPoint.y * aTransform.c + aTransform.tx, aPoint.x * aTransform.b + aPoint.y * aTransform.d + aTransform.ty)
00038 #define _CGSizeApplyAffineTransform(aSize, aTransform) _CGSizeMake(aSize.width * aTransform.a + aSize.height * aTransform.c, aSize.width * aTransform.b + aSize.height * aTransform.d)
00039 #define _CGRectApplyAffineTransform(aRect, aTransform) { origin:_CGPointApplyAffineTransform(aRect.origin, aTransform), size:_CGSizeApplyAffineTransform(aRect.size, aTransform) }
00040
00041 #define _CGAffineTransformIsIdentity(aTransform) (aTransform.a == 1 && aTransform.b == 0 && aTransform.c == 0 && aTransform.d == 1 && aTransform.tx == 0 && aTransform.ty == 0)
00042 #define _CGAffineTransformEqualToTransform(lhs, rhs) (lhs.a == rhs.a && lhs.b == rhs.b && lhs.c == rhs.c && lhs.d == rhs.d && lhs.tx == rhs.tx && lhs.ty == rhs.ty)
00043
00044 #define _CGStringCreateWithCGAffineTransform(aTransform) (" [[ " + aTransform.a + ", " + aTransform.b + ", 0 ], [ " + aTransform.c + ", " + aTransform.d + ", 0 ], [ " + aTransform.tx + ", " + aTransform.ty + ", 1]]")
00045
00046 #define _CGAffineTransformConcatTo(lhs, rhs, to) \
00047 var tx = lhs.tx * rhs.a + lhs.ty * rhs.c + rhs.tx;\
00048 to.ty = lhs.tx * rhs.b + lhs.ty * rhs.d + rhs.ty;\
00049 to.tx = tx;\
00050 var a = lhs.a * rhs.a + lhs.b * rhs.c,\
00051 b = lhs.a * rhs.b + lhs.b * rhs.d,\
00052 c = lhs.c * rhs.a + lhs.d * rhs.c;\
00053 to.d = lhs.c * rhs.b + lhs.d * rhs.d;\
00054 to.a = a;\
00055 to.b = b;\
00056 to.c = c;\
00057
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