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{ CoreGraphics - CGAffineTransform.h
* Copyright (c) 1998-2000 Apple Computer, Inc.
* All rights reserved.
}
{ Pascal Translation Updated: Peter N Lewis, <peter@stairways.com.au>, August 2005 }
{
Modified for use with Free Pascal
Version 200
Please report any bugs to <gpc@microbizz.nl>
}
{$mode macpas}
{$packenum 1}
{$macro on}
{$inline on}
{$CALLING MWPASCAL}
unit CGAffineTransforms;
interface
{$setc UNIVERSAL_INTERFACES_VERSION := $0342}
{$setc GAP_INTERFACES_VERSION := $0200}
{$ifc not defined USE_CFSTR_CONSTANT_MACROS}
{$setc USE_CFSTR_CONSTANT_MACROS := TRUE}
{$endc}
{$ifc defined CPUPOWERPC and defined CPUI386}
{$error Conflicting initial definitions for CPUPOWERPC and CPUI386}
{$endc}
{$ifc defined FPC_BIG_ENDIAN and defined FPC_LITTLE_ENDIAN}
{$error Conflicting initial definitions for FPC_BIG_ENDIAN and FPC_LITTLE_ENDIAN}
{$endc}
{$ifc not defined __ppc__ and defined CPUPOWERPC}
{$setc __ppc__ := 1}
{$elsec}
{$setc __ppc__ := 0}
{$endc}
{$ifc not defined __i386__ and defined CPUI386}
{$setc __i386__ := 1}
{$elsec}
{$setc __i386__ := 0}
{$endc}
{$ifc defined __ppc__ and __ppc__ and defined __i386__ and __i386__}
{$error Conflicting definitions for __ppc__ and __i386__}
{$endc}
{$ifc defined __ppc__ and __ppc__}
{$setc TARGET_CPU_PPC := TRUE}
{$setc TARGET_CPU_X86 := FALSE}
{$elifc defined __i386__ and __i386__}
{$setc TARGET_CPU_PPC := FALSE}
{$setc TARGET_CPU_X86 := TRUE}
{$elsec}
{$error Neither __ppc__ nor __i386__ is defined.}
{$endc}
{$setc TARGET_CPU_PPC_64 := FALSE}
{$ifc defined FPC_BIG_ENDIAN}
{$setc TARGET_RT_BIG_ENDIAN := TRUE}
{$setc TARGET_RT_LITTLE_ENDIAN := FALSE}
{$elifc defined FPC_LITTLE_ENDIAN}
{$setc TARGET_RT_BIG_ENDIAN := FALSE}
{$setc TARGET_RT_LITTLE_ENDIAN := TRUE}
{$elsec}
{$error Neither FPC_BIG_ENDIAN nor FPC_LITTLE_ENDIAN are defined.}
{$endc}
{$setc ACCESSOR_CALLS_ARE_FUNCTIONS := TRUE}
{$setc CALL_NOT_IN_CARBON := FALSE}
{$setc OLDROUTINENAMES := FALSE}
{$setc OPAQUE_TOOLBOX_STRUCTS := TRUE}
{$setc OPAQUE_UPP_TYPES := TRUE}
{$setc OTCARBONAPPLICATION := TRUE}
{$setc OTKERNEL := FALSE}
{$setc PM_USE_SESSION_APIS := TRUE}
{$setc TARGET_API_MAC_CARBON := TRUE}
{$setc TARGET_API_MAC_OS8 := FALSE}
{$setc TARGET_API_MAC_OSX := TRUE}
{$setc TARGET_CARBON := TRUE}
{$setc TARGET_CPU_68K := FALSE}
{$setc TARGET_CPU_MIPS := FALSE}
{$setc TARGET_CPU_SPARC := FALSE}
{$setc TARGET_OS_MAC := TRUE}
{$setc TARGET_OS_UNIX := FALSE}
{$setc TARGET_OS_WIN32 := FALSE}
{$setc TARGET_RT_MAC_68881 := FALSE}
{$setc TARGET_RT_MAC_CFM := FALSE}
{$setc TARGET_RT_MAC_MACHO := TRUE}
{$setc TYPED_FUNCTION_POINTERS := TRUE}
{$setc TYPE_BOOL := FALSE}
{$setc TYPE_EXTENDED := FALSE}
{$setc TYPE_LONGLONG := TRUE}
uses MacTypes,CGBase,CGGeometry;
{$ALIGN POWER}
type
CGAffineTransformPtr = ^CGAffineTransform;
CGAffineTransform = record
a, b, c, d: Float32;
tx, ty: Float32;
end;
{ The identity transform: [ 1 0 0 1 0 0 ]. }
var CGAffineTransformIdentity: CGAffineTransform; external name '_CGAffineTransformIdentity'; (* attribute const *)
{ Return the transform [ a b c d tx ty ]. }
function CGAffineTransformMake( a: Float32; b: Float32; c: Float32; d: Float32; tx: Float32; ty: Float32 ): CGAffineTransform; external name '_CGAffineTransformMake';
{ Return a transform which translates by `(tx, ty)':
* t' = [ 1 0 0 1 tx ty ] }
function CGAffineTransformMakeTranslation( tx: Float32; ty: Float32 ): CGAffineTransform; external name '_CGAffineTransformMakeTranslation';
{ Return a transform which scales by `(sx, sy)':
* t' = [ sx 0 0 sy 0 0 ] }
function CGAffineTransformMakeScale( sx: Float32; sy: Float32 ): CGAffineTransform; external name '_CGAffineTransformMakeScale';
{ Return a transform which rotates by `angle' radians:
* t' = [ cos(angle) sin(angle) -sin(angle) cos(angle) 0 0 ] }
function CGAffineTransformMakeRotation( angle: Float32 ): CGAffineTransform; external name '_CGAffineTransformMakeRotation';
{ Return true if `t' is the identity transform, false otherwise. }
function CGAffineTransformIsIdentity( t: CGAffineTransform ): CBool; external name '_CGAffineTransformIsIdentity'; (* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)
{ Translate `t' by `(tx, ty)' and return the result:
* t' = [ 1 0 0 1 tx ty ] * t }
function CGAffineTransformTranslate( t: CGAffineTransform; tx: Float32; ty: Float32 ): CGAffineTransform; external name '_CGAffineTransformTranslate';
{ Scale `t' by `(sx, sy)' and return the result:
* t' = [ sx 0 0 sy 0 0 ] * t }
function CGAffineTransformScale( t: CGAffineTransform; sx: Float32; sy: Float32 ): CGAffineTransform; external name '_CGAffineTransformScale';
{ Rotate `t' by `angle' radians and return the result:
* t' = [ cos(angle) sin(angle) -sin(angle) cos(angle) 0 0 ] * t }
function CGAffineTransformRotate( t: CGAffineTransform; angle: Float32 ): CGAffineTransform; external name '_CGAffineTransformRotate';
{ Invert `t' and return the result. If `t' has zero determinant, then `t'
* is returned unchanged. }
function CGAffineTransformInvert( t: CGAffineTransform ): CGAffineTransform; external name '_CGAffineTransformInvert';
{ Concatenate `t2' to `t1' and return the result:
* t' = t1 * t2 }
function CGAffineTransformConcat( t1: CGAffineTransform; t2: CGAffineTransform ): CGAffineTransform; external name '_CGAffineTransformConcat';
{ Return true if `t1' and `t2' are equal, false otherwise. }
function CGAffineTransformEqualToTransform( t1: CGAffineTransform; t2: CGAffineTransform ): CBool; external name '_CGAffineTransformEqualToTransform'; (* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)
{ Transform `point' by `t' and return the result:
* p' = p * t
* where p = [ x y 1 ]. }
function CGPointApplyAffineTransform( point: CGPoint; t: CGAffineTransform ): CGPoint; external name '_CGPointApplyAffineTransform';
{ Transform `size' by `t' and return the result:
* s' = s * t
* where s = [ width height 0 ]. }
function CGSizeApplyAffineTransform( size: CGSize; t: CGAffineTransform ): CGSize; external name '_CGSizeApplyAffineTransform';
{ Transform `rect' by `t' and return the result. Since affine transforms
* do not preserve rectangles in general, this function returns the
* smallest rectangle which contains the transformed corner points of
* `rect'. If `t' consists solely of scales, flips and translations, then
* the returned rectangle coincides with the rectangle constructed from the
* four transformed corners. }
function CGRectApplyAffineTransform( rect: CGRect; t: CGAffineTransform ): CGRect; external name '_CGRectApplyAffineTransform'; (* AVAILABLE_MAC_OS_X_VERSION_10_4_AND_LATER *)
(*
{** Definitions of inline functions. **}
CG_INLINE CGAffineTransform
__CGAffineTransformMake(float a, float b, float c, float d, float tx, float ty)
{
CGAffineTransform t;
t.a = a; t.b = b; t.c = c; t.d = d; t.tx = tx; t.ty = ty;
return t;
}
#define CGAffineTransformMake __CGAffineTransformMake
CG_INLINE CGPoint
__CGPointApplyAffineTransform(CGPoint point, CGAffineTransform t)
{
CGPoint p;
p.x = t.a * point.x + t.c * point.y + t.tx;
p.y = t.b * point.x + t.d * point.y + t.ty;
return p;
}
#define CGPointApplyAffineTransform __CGPointApplyAffineTransform
CG_INLINE CGSize
__CGSizeApplyAffineTransform(CGSize size, CGAffineTransform t)
{
CGSize s;
s.width = t.a * size.width + t.c * size.height;
s.height = t.b * size.width + t.d * size.height;
return s;
}
#define CGSizeApplyAffineTransform __CGSizeApplyAffineTransform
*)
end.
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