60 lines
2.2 KiB
Objective-C
60 lines
2.2 KiB
Objective-C
//
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// IJSVGCommandCommandQuadraticCurve.m
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// IconJar
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//
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// Created by Curtis Hard on 30/08/2014.
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// Copyright (c) 2014 Curtis Hard. All rights reserved.
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//
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#import "IJSVGCommandCommandSmoothQuadraticCurve.h"
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#import "IJSVGUtils.h"
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@implementation IJSVGCommandCommandSmoothQuadraticCurve
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+ (void)load
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{
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[IJSVGCommand registerClass:[self class]
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forCommand:@"t"];
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}
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+ (NSInteger)requiredParameterCount
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{
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return 4;
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}
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+ (void)runWithParams:(CGFloat *)params
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paramCount:(NSInteger)count
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command:(IJSVGCommand *)currentCommand
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previousCommand:(IJSVGCommand *)command
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type:(IJSVGCommandType)type
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path:(IJSVGPath *)path
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{
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NSPoint firstPoint = NSMakePoint( [path currentSubpath].currentPoint.x, [path currentSubpath].currentPoint.y );
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if( command != nil )
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{
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if( command.commandClass == [self class] )
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{
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if( command.type == IJSVGCommandTypeAbsolute )
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{
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firstPoint = NSMakePoint(-1*command.parameters[0] + 2*[path currentSubpath].currentPoint.x,
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-1*command.parameters[1] + 2*[path currentSubpath].currentPoint.y);
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} else {
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NSPoint oldPoint = CGPointMake([path currentSubpath].currentPoint.x - command.parameters[2],
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[path currentSubpath].currentPoint.y - command.parameters[3]);
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firstPoint = CGPointMake(-1*(command.parameters[0] + oldPoint.x) + 2*[path currentSubpath].currentPoint.x,
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-1*(command.parameters[1] + oldPoint.y) + 2*[path currentSubpath].currentPoint.y);
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}
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}
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}
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if( type == IJSVGCommandTypeAbsolute )
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{
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[[path currentSubpath] addQuadCurveToPoint:NSMakePoint(params[0], params[1])
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controlPoint:NSMakePoint(firstPoint.x, firstPoint.y)];
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return;
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}
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[[path currentSubpath] addQuadCurveToPoint:NSMakePoint([path currentSubpath].currentPoint.x + params[0], [path currentSubpath].currentPoint.y + params[1])
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controlPoint:CGPointMake(firstPoint.x, firstPoint.y)];
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}
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@end
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