/*
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* Copyright 2012 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* This class implements a perspective transform in two dimensions. Given four source and four
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* destination points, it will compute the transformation implied between them. The code is based
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* directly upon section 3.4.2 of George Wolberg's "Digital Image Warping"; see pages 54-56.
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*/
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@interface ZXPerspectiveTransform : NSObject
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+ (ZXPerspectiveTransform *)quadrilateralToQuadrilateral:(float)x0 y0:(float)y0 x1:(float)x1 y1:(float)y1 x2:(float)x2 y2:(float)y2 x3:(float)x3 y3:(float)y3 x0p:(float)x0p y0p:(float)y0p x1p:(float)x1p y1p:(float)y1p x2p:(float)x2p y2p:(float)y2p x3p:(float)x3p y3p:(float)y3p;
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- (void)transformPoints:(float *)points pointsLen:(int)pointsLen;
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- (void)transformPoints:(float *)xValues yValues:(float *)yValues pointsLen:(int)pointsLen;
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+ (ZXPerspectiveTransform *)squareToQuadrilateral:(float)x0 y0:(float)y0 x1:(float)x1 y1:(float)y1 x2:(float)x2 y2:(float)y2 x3:(float)x3 y3:(float)y3;
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+ (ZXPerspectiveTransform *)quadrilateralToSquare:(float)x0 y0:(float)y0 x1:(float)x1 y1:(float)y1 x2:(float)x2 y2:(float)y2 x3:(float)x3 y3:(float)y3;
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- (ZXPerspectiveTransform *)buildAdjoint;
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- (ZXPerspectiveTransform *)times:(ZXPerspectiveTransform *)other;
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@end
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