1 /* 2 * Copyright 2006-2007, Haiku. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Stephan Aßmus <superstippi@gmx.de> 7 */ 8 #ifndef PERSPECTIVE_TRANSFORMER_H 9 #define PERSPECTIVE_TRANSFORMER_H 10 11 12 #include "Transformer.h" 13 14 #include <agg_conv_transform.h> 15 #include <agg_trans_perspective.h> 16 17 18 namespace BPrivate { 19 namespace Icon { 20 21 typedef agg::conv_transform<VertexSource, 22 agg::trans_perspective> Perspective; 23 24 class PerspectiveTransformer : public Transformer, 25 public Perspective, 26 public agg::trans_perspective { 27 public: 28 enum { 29 archive_code = 'prsp', 30 }; 31 32 PerspectiveTransformer( 33 VertexSource& source); 34 PerspectiveTransformer( 35 VertexSource& source, 36 BMessage* archive); 37 38 virtual ~PerspectiveTransformer(); 39 40 // Transformer interface 41 virtual Transformer* Clone(VertexSource& source) const; 42 43 virtual void rewind(unsigned path_id); 44 virtual unsigned vertex(double* x, double* y); 45 46 virtual void SetSource(VertexSource& source); 47 48 virtual double ApproximationScale() const; 49 50 #ifdef ICON_O_MATIC 51 // IconObject interface 52 virtual status_t Archive(BMessage* into, 53 bool deep = true) const; 54 55 #endif 56 }; 57 58 } // namespace Icon 59 } // namespace BPrivate 60 61 #endif // PERSPECTIVE_TRANSFORMER_H 62