darling-cocotron/Onyx2D/O2Shading.m

/* Copyright (c) 2007 Christopher J. W. Lloyd

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */

#import <Foundation/NSString.h>
#import <Onyx2D/O2ColorSpace.h>
#import <Onyx2D/O2Function.h>
#import <Onyx2D/O2Shading.h>

@implementation O2Shading

- initWithColorSpace: (O2ColorSpaceRef) colorSpace
          startPoint: (O2Point) startPoint
            endPoint: (O2Point) endPoint
            function: (O2Function *) function
         extendStart: (BOOL) extendStart
           extendEnd: (BOOL) extendEnd
              domain: (O2Float[]) domain
{
    _colorSpace = [colorSpace retain];
    _startPoint = startPoint;
    _endPoint = endPoint;
    _function = [function retain];
    _extendStart = extendStart;
    _extendEnd = extendEnd;
    _isRadial = NO;
    _domain[0] = domain[0];
    _domain[1] = domain[1];
    return self;
}

- initWithColorSpace: (O2ColorSpaceRef) colorSpace
          startPoint: (O2Point) startPoint
         startRadius: (O2Float) startRadius
            endPoint: (O2Point) endPoint
           endRadius: (O2Float) endRadius
            function: (O2Function *) function
         extendStart: (BOOL) extendStart
           extendEnd: (BOOL) extendEnd
              domain: (O2Float[]) domain
{
    _colorSpace = [colorSpace retain];
    _startPoint = startPoint;
    _endPoint = endPoint;
    _function = [function retain];
    _extendStart = extendStart;
    _extendEnd = extendEnd;
    _isRadial = YES;
    _startRadius = startRadius;
    _endRadius = endRadius;
    _domain[0] = domain[0];
    _domain[1] = domain[1];
    return self;
}

- (void) dealloc {
    [_colorSpace release];
    [_function release];
    [super dealloc];
}

O2ColorSpaceRef O2ShadingColorSpace(O2Shading *self) {
    return self->_colorSpace;
}

- (O2Point) startPoint {
    return _startPoint;
}

- (O2Point) endPoint {
    return _endPoint;
}

- (O2Float) startRadius {
    return _startRadius;
}

- (O2Float) endRadius {
    return _endRadius;
}

- (BOOL) extendStart {
    return _extendStart;
}

- (BOOL) extendEnd {
    return _extendEnd;
}

- (O2Function *) function {
    return _function;
}

- (BOOL) isAxial {
    return _isRadial ? NO : YES;
}

O2ShadingRef O2ShadingCreateAxial(O2ColorSpaceRef colorSpace, O2Point start,
                                  O2Point end, O2FunctionRef function,
                                  BOOL extendStart, BOOL extendEnd)
{
    O2Float domain[2] = {0.0f, 1.0f};

    return [[O2Shading alloc] initWithColorSpace: colorSpace
                                      startPoint: start
                                        endPoint: end
                                        function: function
                                     extendStart: extendStart
                                       extendEnd: extendEnd
                                          domain: domain];
}

O2ShadingRef O2ShadingCreateRadial(O2ColorSpaceRef colorSpace, O2Point start,
                                   O2Float startRadius, O2Point end,
                                   O2Float endRadius, O2FunctionRef function,
                                   BOOL extendStart, BOOL extendEnd)
{
    O2Float domain[2] = {0.0f, 1.0f};

    return [[O2Shading alloc] initWithColorSpace: colorSpace
                                      startPoint: start
                                     startRadius: startRadius
                                        endPoint: end
                                       endRadius: endRadius
                                        function: function
                                     extendStart: extendStart
                                       extendEnd: extendEnd
                                          domain: domain];
}

O2ShadingRef O2ShadingRetain(O2ShadingRef self) {
    return (self != NULL) ? (O2ShadingRef) CFRetain(self) : NULL;
}

void O2ShadingRelease(O2ShadingRef self) {
    if (self != NULL)
        CFRelease(self);
}

@end