197 lines
6.1 KiB
C
197 lines
6.1 KiB
C
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//----------------------------------------------------------------------------
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// Anti-Grain Geometry - Version 2.4
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// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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//----------------------------------------------------------------------------
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// Contact: mcseem@antigrain.com
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// mcseemagg@yahoo.com
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// http://www.antigrain.com
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//----------------------------------------------------------------------------
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//
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// classes bezier_ctrl_impl, bezier_ctrl
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//
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//----------------------------------------------------------------------------
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#ifndef AGG_BEZIER_CTRL_INCLUDED
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#define AGG_BEZIER_CTRL_INCLUDED
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#include "agg_math.h"
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#include "agg_ellipse.h"
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#include "agg_trans_affine.h"
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#include "agg_color_rgba.h"
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#include "agg_conv_stroke.h"
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#include "agg_conv_curve.h"
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#include "agg_polygon_ctrl.h"
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namespace agg
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{
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//--------------------------------------------------------bezier_ctrl_impl
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class bezier_ctrl_impl : public ctrl
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{
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public:
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bezier_ctrl_impl();
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void curve(double x1, double y1,
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double x2, double y2,
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double x3, double y3,
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double x4, double y4);
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curve4& curve();
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double x1() const { return m_poly.xn(0); }
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double y1() const { return m_poly.yn(0); }
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double x2() const { return m_poly.xn(1); }
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double y2() const { return m_poly.yn(1); }
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double x3() const { return m_poly.xn(2); }
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double y3() const { return m_poly.yn(2); }
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double x4() const { return m_poly.xn(3); }
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double y4() const { return m_poly.yn(3); }
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void x1(double x) { m_poly.xn(0) = x; }
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void y1(double y) { m_poly.yn(0) = y; }
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void x2(double x) { m_poly.xn(1) = x; }
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void y2(double y) { m_poly.yn(1) = y; }
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void x3(double x) { m_poly.xn(2) = x; }
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void y3(double y) { m_poly.yn(2) = y; }
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void x4(double x) { m_poly.xn(3) = x; }
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void y4(double y) { m_poly.yn(3) = y; }
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void line_width(double w) { m_stroke.width(w); }
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double line_width() const { return m_stroke.width(); }
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void point_radius(double r) { m_poly.point_radius(r); }
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double point_radius() const { return m_poly.point_radius(); }
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virtual bool in_rect(double x, double y) const;
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virtual bool on_mouse_button_down(double x, double y);
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virtual bool on_mouse_button_up(double x, double y);
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virtual bool on_mouse_move(double x, double y, bool button_flag);
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virtual bool on_arrow_keys(bool left, bool right, bool down, bool up);
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// Vertex source interface
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unsigned num_paths() { return 7; };
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void rewind(unsigned path_id);
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unsigned vertex(double* x, double* y);
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private:
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curve4 m_curve;
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ellipse m_ellipse;
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conv_stroke<curve4> m_stroke;
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polygon_ctrl_impl m_poly;
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unsigned m_idx;
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};
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//----------------------------------------------------------bezier_ctrl
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template<class ColorT> class bezier_ctrl : public bezier_ctrl_impl
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{
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public:
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bezier_ctrl() :
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m_color(rgba(0.0, 0.0, 0.0))
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{
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}
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void line_color(const ColorT& c) { m_color = c; }
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const ColorT& color(unsigned) const { return m_color; }
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private:
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bezier_ctrl(const bezier_ctrl<ColorT>&);
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const bezier_ctrl<ColorT>& operator = (const bezier_ctrl<ColorT>&);
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ColorT m_color;
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};
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//--------------------------------------------------------curve3_ctrl_impl
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class curve3_ctrl_impl : public ctrl
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{
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public:
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curve3_ctrl_impl();
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void curve(double x1, double y1,
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double x2, double y2,
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double x3, double y3);
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curve3& curve();
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double x1() const { return m_poly.xn(0); }
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double y1() const { return m_poly.yn(0); }
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double x2() const { return m_poly.xn(1); }
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double y2() const { return m_poly.yn(1); }
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double x3() const { return m_poly.xn(2); }
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double y3() const { return m_poly.yn(2); }
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void x1(double x) { m_poly.xn(0) = x; }
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void y1(double y) { m_poly.yn(0) = y; }
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void x2(double x) { m_poly.xn(1) = x; }
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void y2(double y) { m_poly.yn(1) = y; }
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void x3(double x) { m_poly.xn(2) = x; }
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void y3(double y) { m_poly.yn(2) = y; }
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void line_width(double w) { m_stroke.width(w); }
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double line_width() const { return m_stroke.width(); }
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void point_radius(double r) { m_poly.point_radius(r); }
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double point_radius() const { return m_poly.point_radius(); }
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virtual bool in_rect(double x, double y) const;
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virtual bool on_mouse_button_down(double x, double y);
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virtual bool on_mouse_button_up(double x, double y);
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virtual bool on_mouse_move(double x, double y, bool button_flag);
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virtual bool on_arrow_keys(bool left, bool right, bool down, bool up);
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// Vertex source interface
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unsigned num_paths() { return 6; };
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void rewind(unsigned path_id);
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unsigned vertex(double* x, double* y);
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private:
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curve3 m_curve;
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ellipse m_ellipse;
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conv_stroke<curve3> m_stroke;
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polygon_ctrl_impl m_poly;
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unsigned m_idx;
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};
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//----------------------------------------------------------curve3_ctrl
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template<class ColorT> class curve3_ctrl : public curve3_ctrl_impl
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{
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public:
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curve3_ctrl() :
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m_color(rgba(0.0, 0.0, 0.0))
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{
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}
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void line_color(const ColorT& c) { m_color = c; }
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const ColorT& color(unsigned i) const { return m_color; }
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private:
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curve3_ctrl(const curve3_ctrl<ColorT>&);
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const curve3_ctrl<ColorT>& operator = (const curve3_ctrl<ColorT>&);
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ColorT m_color;
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};
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}
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#endif
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