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/*
File: CGAffineTransform.h
Contains: CoreGraphics affine transforms
Version: QuickTime 7.3
Copyright: (c) 2007 (c) 2000-2001 by Apple Computer, Inc., all rights reserved.
Bugs?: For bug reports, consult the following page on
the World Wide Web:
http://developer.apple.com/bugreporter/
*/
#ifndef CGAFFINETRANSFORM_H_
#define CGAFFINETRANSFORM_H_
#ifndef __CGBASE__
#include <CGBase.h>
#endif
#ifndef __CGGEOMETRY__
#include <CGGeometry.h>
#endif
#if PRAGMA_ONCE
#pragma once
#endif
#ifdef __cplusplus
extern "C" {
#endif
#if PRAGMA_IMPORT
#pragma import on
#endif
#if PRAGMA_STRUCT_ALIGN
#pragma options align=mac68k
#elif PRAGMA_STRUCT_PACKPUSH
#pragma pack(push, 2)
#elif PRAGMA_STRUCT_PACK
#pragma pack(2)
#endif
struct CGAffineTransform {
float a;
float b;
float c;
float d;
float tx;
float ty;
};
typedef struct CGAffineTransform CGAffineTransform;
/* The identity transform: [ 1 0 0 1 0 0 ]. */
/*
* CGAffineTransformIdentity
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
extern const CGAffineTransform CGAffineTransformIdentity;
/* Return the transform [ a b c d tx ty ]. */
/*
* CGAffineTransformMake()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformMake(
float a,
float b,
float c,
float d,
float tx,
float ty);
/* Return a transform which translates by `(tx, ty)':
* t' = [ 1 0 0 1 tx ty ] */
/*
* CGAffineTransformMakeTranslation()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformMakeTranslation(
float tx,
float ty);
/* Return a transform which scales by `(sx, sy)':
* t' = [ sx 0 0 sy 0 0 ] */
/*
* CGAffineTransformMakeScale()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformMakeScale(
float sx,
float sy);
/* Return a transform which rotates by `angle' radians:
* t' = [ cos(angle) sin(angle) -sin(angle) cos(angle) 0 0 ] */
/*
* CGAffineTransformMakeRotation()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformMakeRotation(float angle);
/* Translate `t' by `(tx, ty)' and return the result:
* t' = [ 1 0 0 1 tx ty ] * t */
/*
* CGAffineTransformTranslate()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformTranslate(
CGAffineTransform t,
float tx,
float ty);
/* Scale `t' by `(sx, sy)' and return the result:
* t' = [ sx 0 0 sy 0 0 ] * t */
/*
* CGAffineTransformScale()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformScale(
CGAffineTransform t,
float sx,
float sy);
/* Rotate `t' by `angle' radians and return the result:
* t' = [ cos(angle) sin(angle) -sin(angle) cos(angle) 0 0 ] * t */
/*
* CGAffineTransformRotate()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformRotate(
CGAffineTransform t,
float angle);
/* Invert `t' and return the result. If `t' has zero determinant, then `t'
* is returned unchanged. */
/*
* CGAffineTransformInvert()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformInvert(CGAffineTransform t);
/* Concatenate `t2' to `t1' and returne the result:
* t' = t1 * t2 */
/*
* CGAffineTransformConcat()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGAffineTransform )
CGAffineTransformConcat(
CGAffineTransform t1,
CGAffineTransform t2);
/* Transform `point' by `t' and return the result:
* p' = p * t
* where p = [ x y 1 ]. */
/*
* CGPointApplyAffineTransform()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGPoint )
CGPointApplyAffineTransform(
CGPoint point,
CGAffineTransform t);
/* Transform `size' by `t' and return the result:
* s' = s * t
* where s = [ width height 0 ]. */
/*
* CGSizeApplyAffineTransform()
*
* Availability:
* Non-Carbon CFM: not available
* CarbonLib: not available
* Mac OS X: in version 10.0 and later
*/
EXTERN_API_C( CGSize )
CGSizeApplyAffineTransform(
CGSize size,
CGAffineTransform t);
#if PRAGMA_STRUCT_ALIGN
#pragma options align=reset
#elif PRAGMA_STRUCT_PACKPUSH
#pragma pack(pop)
#elif PRAGMA_STRUCT_PACK
#pragma pack()
#endif
#ifdef PRAGMA_IMPORT_OFF
#pragma import off
#elif PRAGMA_IMPORT
#pragma import reset
#endif
#ifdef __cplusplus
}
#endif
#endif /* CGAFFINETRANSFORM_H_ */
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