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63 lines
3.6 KiB
C
63 lines
3.6 KiB
C
/*
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* CGAffineTransform.h
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* AppKit
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*
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* Created by Francisco Tolmasky.
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* Copyright 2008, 280 North, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "CGGeometry.h"
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#define _CGAffineTransformMake(a_, b_, c_, d_, tx_, ty_) { a:a_, b:b_, c:c_, d:d_, tx:tx_, ty:ty_ }
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#define _CGAffineTransformMakeIdentity() _CGAffineTransformMake(1.0, 0.0, 0.0, 1.0, 0.0, 0.0)
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#define _CGAffineTransformMakeCopy(aTransform) _CGAffineTransformMake(aTransform.a, aTransform.b, aTransform.c, aTransform.d, aTransform.tx, aTransform.ty)
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#define _CGAffineTransformMakeScale(sx, sy) _CGAffineTransformMake(sx, 0.0, 0.0, sy, 0.0, 0.0)
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#define _CGAffineTransformMakeTranslation(tx, ty) _CGAffineTransformMake(1.0, 0.0, 0.0, 1.0, tx, ty)
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#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)
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#define _CGAffineTransformScale(aTransform, sx, sy) _CGAffineTransformMake(aTransform.a * sx, aTransform.b * sx, aTransform.c * sy, aTransform.d * sy, aTransform.tx, aTransform.ty)
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#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)
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#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)
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#define _CGSizeApplyAffineTransform(aSize, aTransform) _CGSizeMake(aSize.width * aTransform.a + aSize.height * aTransform.c, aSize.width * aTransform.b + aSize.height * aTransform.d)
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#define _CGRectApplyAffineTransform(aRect, aTransform) { origin:_CGPointApplyAffineTransform(aRect.origin, aTransform), size:_CGSizeApplyAffineTransform(aRect.size, aTransform) }
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#define _CGAffineTransformIsIdentity(aTransform) (aTransform.a == 1 && aTransform.b == 0 && aTransform.c == 0 && aTransform.d == 1 && aTransform.tx == 0 && aTransform.ty == 0)
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#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)
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#define _CGStringCreateWithCGAffineTransform(aTransform) (" [[ " + aTransform.a + ", " + aTransform.b + ", 0 ], [ " + aTransform.c + ", " + aTransform.d + ", 0 ], [ " + aTransform.tx + ", " + aTransform.ty + ", 1]]")
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#define _CGAffineTransformConcatTo(lhs, rhs, to) \
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var tx = lhs.tx * rhs.a + lhs.ty * rhs.c + rhs.tx;\
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to.ty = lhs.tx * rhs.b + lhs.ty * rhs.d + rhs.ty;\
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to.tx = tx;\
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var a = lhs.a * rhs.a + lhs.b * rhs.c,\
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b = lhs.a * rhs.b + lhs.b * rhs.d,\
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c = lhs.c * rhs.a + lhs.d * rhs.c;\
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to.d = lhs.c * rhs.b + lhs.d * rhs.d;\
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to.a = a;\
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to.b = b;\
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to.c = c;\
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/*
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a b 0 cos sin 0
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c d 0 -sin cos 0
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tx ty 1 0 0 1
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*/
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