diff options
author | Graeme Geldenhuys <graeme@mastermaths.co.za> | 2012-11-22 11:48:47 +0000 |
---|---|---|
committer | Graeme Geldenhuys <graeme@mastermaths.co.za> | 2012-11-22 11:48:47 +0000 |
commit | af45f95f16cee22f8f012f706f4d0a42eaeb68fa (patch) | |
tree | c572c1cc6a7d3bb12874d8f9b9363312b275e328 /src/corelib/render/software/ctrl/agg_bezier_ctrl.pas | |
parent | 9c62dfaf7217557f08a3d33b20bb302874960f87 (diff) | |
download | fpGUI-af45f95f16cee22f8f012f706f4d0a42eaeb68fa.tar.xz |
Fixes line ending issues
Diffstat (limited to 'src/corelib/render/software/ctrl/agg_bezier_ctrl.pas')
-rw-r--r-- | src/corelib/render/software/ctrl/agg_bezier_ctrl.pas | 1774 |
1 files changed, 887 insertions, 887 deletions
diff --git a/src/corelib/render/software/ctrl/agg_bezier_ctrl.pas b/src/corelib/render/software/ctrl/agg_bezier_ctrl.pas index 6f158c2b..2b92baa3 100644 --- a/src/corelib/render/software/ctrl/agg_bezier_ctrl.pas +++ b/src/corelib/render/software/ctrl/agg_bezier_ctrl.pas @@ -1,887 +1,887 @@ -//----------------------------------------------------------------------------
-// Anti-Grain Geometry - Version 2.4 (Public License)
-// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
-//
-// Anti-Grain Geometry - Version 2.4 Release Milano 3 (AggPas 2.4 RM3)
-// Pascal Port By: Milan Marusinec alias Milano
-// milan@marusinec.sk
-// http://www.aggpas.org
-// Copyright (c) 2005-2006
-//
-// Permission to copy, use, modify, sell and distribute this software
-// is granted provided this copyright notice appears in all copies.
-// This software is provided "as is" without express or implied
-// warranty, and with no claim as to its suitability for any purpose.
-//
-//----------------------------------------------------------------------------
-// Contact: mcseem@antigrain.com
-// mcseemagg@yahoo.com
-// http://www.antigrain.com
-//
-//----------------------------------------------------------------------------
-//
-// classes bezier_ctrl_impl, bezier_ctrl
-//
-// [Pascal Port History] -----------------------------------------------------
-//
-// 23.02.2006-Milano: Unit port establishment
-//
-{ agg_bezier_ctrl.pas }
-unit
- agg_bezier_ctrl ;
-
-INTERFACE
-
-{$I agg_mode.inc }
-
-uses
- agg_basics ,
- agg_ctrl ,
- agg_math ,
- agg_ellipse ,
- agg_trans_affine ,
- agg_color ,
- agg_curves ,
- agg_conv_stroke ,
- agg_conv_curve ,
- agg_polygon_ctrl ;
-
-{ TYPES DEFINITION }
-type
- bezier_ctrl_impl = object(ctrl )
- m_curve : curve4;
- m_ellipse : ellipse;
- m_stroke : conv_stroke;
- m_poly : polygon_ctrl_impl;
- m_idx : unsigned;
-
- constructor Construct;
- destructor Destruct; virtual;
-
- procedure curve_(x1 ,y1 ,x2 ,y2 ,x3 ,y3 ,x4 ,y4 : double );
- function _curve : curve4_ptr;
-
- function _x1 : double;
- function _y1 : double;
- function _x2 : double;
- function _y2 : double;
- function _x3 : double;
- function _y3 : double;
- function _x4 : double;
- function _y4 : double;
-
- procedure x1_(x : double );
- procedure y1_(y : double );
- procedure x2_(x : double );
- procedure y2_(y : double );
- procedure x3_(x : double );
- procedure y3_(y : double );
- procedure x4_(x : double );
- procedure y4_(y : double );
-
- procedure line_width_(w : double );
- function _line_width : double;
-
- procedure point_radius_(r : double );
- function _point_radius : double;
-
- // Event handlers
- function in_rect(x ,y : double ) : boolean; virtual;
-
- function on_mouse_button_down(x ,y : double ) : boolean; virtual;
- function on_mouse_button_up (x ,y : double ) : boolean; virtual;
-
- function on_mouse_move(x ,y : double; button_flag : boolean ) : boolean; virtual;
- function on_arrow_keys(left ,right ,down ,up : boolean ) : boolean; virtual;
-
- // Vertex source interface
- function num_paths : unsigned; virtual;
- procedure rewind(path_id : unsigned ); virtual;
- function vertex(x ,y : double_ptr ) : unsigned; virtual;
-
- end;
-
- bezier_ctrl = object(bezier_ctrl_impl )
- m_color : aggclr;
-
- constructor Construct;
-
- procedure line_color_(c : aggclr_ptr );
-
- function _color(i : unsigned ) : aggclr_ptr; virtual;
-
- end;
-
- curve3_ctrl_impl = object(ctrl )
- m_curve : curve3;
- m_ellipse : ellipse;
- m_stroke : conv_stroke;
- m_poly : polygon_ctrl_impl;
- m_idx : unsigned;
-
- constructor Construct;
- destructor Destruct; virtual;
-
- procedure curve_(x1 ,y1 ,x2 ,y2 ,x3 ,y3 : double );
- function _curve : curve3_ptr;
-
- function _x1 : double;
- function _y1 : double;
- function _x2 : double;
- function _y2 : double;
- function _x3 : double;
- function _y3 : double;
-
- procedure x1_(x : double );
- procedure y1_(y : double );
- procedure x2_(x : double );
- procedure y2_(y : double );
- procedure x3_(x : double );
- procedure y3_(y : double );
-
- procedure line_width_(w : double );
- function _line_width : double;
-
- procedure point_radius_(r : double );
- function _point_radius : double;
-
- // Event handlers
- function in_rect(x ,y : double ) : boolean; virtual;
-
- function on_mouse_button_down(x ,y : double ) : boolean; virtual;
- function on_mouse_button_up (x ,y : double ) : boolean; virtual;
-
- function on_mouse_move(x ,y : double; button_flag : boolean ) : boolean; virtual;
- function on_arrow_keys(left ,right ,down ,up : boolean ) : boolean; virtual;
-
- // Vertex source interface
- function num_paths : unsigned; virtual;
- procedure rewind(path_id : unsigned ); virtual;
- function vertex(x ,y : double_ptr ) : unsigned; virtual;
-
- end;
-
- curve3_ctrl = object(curve3_ctrl_impl )
- m_color : aggclr;
-
- constructor Construct;
-
- procedure line_color_(c : aggclr_ptr );
-
- function _color(i : unsigned ) : aggclr_ptr; virtual;
-
- end;
-
-{ GLOBAL PROCEDURES }
-
-
-IMPLEMENTATION
-{ LOCAL VARIABLES & CONSTANTS }
-{ UNIT IMPLEMENTATION }
-{ CONSTRUCT }
-constructor bezier_ctrl_impl.Construct;
-begin
- inherited Construct(0 ,0 ,1 ,1 ,false );
-
- m_curve.Construct;
- m_ellipse.Construct;
- m_stroke.Construct(@m_curve );
- m_poly.Construct (4 ,5.0 );
-
- m_idx:=0;
-
- m_poly.in_polygon_check_(false );
-
- m_poly.xn_ptr(0 )^:=100.0;
- m_poly.yn_ptr(0 )^:= 0.0;
- m_poly.xn_ptr(1 )^:=100.0;
- m_poly.yn_ptr(1 )^:= 50.0;
- m_poly.xn_ptr(2 )^:= 50.0;
- m_poly.yn_ptr(2 )^:=100.0;
- m_poly.xn_ptr(3 )^:= 0.0;
- m_poly.yn_ptr(3 )^:=100.0;
-
-end;
-
-{ DESTRUCT }
-destructor bezier_ctrl_impl.Destruct;
-begin
- m_curve.Destruct;
- m_stroke.Destruct;
- m_poly.Destruct;
-
-end;
-
-{ CURVE_ }
-procedure bezier_ctrl_impl.curve_;
-begin
- m_poly.xn_ptr(0 )^:=x1;
- m_poly.yn_ptr(0 )^:=y1;
- m_poly.xn_ptr(1 )^:=x2;
- m_poly.yn_ptr(1 )^:=y2;
- m_poly.xn_ptr(2 )^:=x3;
- m_poly.yn_ptr(2 )^:=y3;
- m_poly.xn_ptr(3 )^:=x4;
- m_poly.yn_ptr(3 )^:=y4;
-
- _curve;
-
-end;
-
-{ _CURVE }
-function bezier_ctrl_impl._curve;
-begin
- m_curve.init4(
- m_poly._xn(0 ) ,m_poly._yn(0 ) ,
- m_poly._xn(1 ) ,m_poly._yn(1 ) ,
- m_poly._xn(2 ) ,m_poly._yn(2 ) ,
- m_poly._xn(3 ) ,m_poly._yn(3 ) );
-
- result:=@m_curve;
-
-end;
-
-{ _X1 }
-function bezier_ctrl_impl._x1;
-begin
- result:=m_poly._xn(0 );
-
-end;
-
-{ _Y1 }
-function bezier_ctrl_impl._y1;
-begin
- result:=m_poly._yn(0 );
-
-end;
-
-{ _X2 }
-function bezier_ctrl_impl._x2;
-begin
- result:=m_poly._xn(1 );
-
-end;
-
-{ _Y2 }
-function bezier_ctrl_impl._y2;
-begin
- result:=m_poly._yn(1 );
-
-end;
-
-{ _X3 }
-function bezier_ctrl_impl._x3;
-begin
- result:=m_poly._xn(2 );
-
-end;
-
-{ _Y3 }
-function bezier_ctrl_impl._y3;
-begin
- result:=m_poly._yn(2 );
-
-end;
-
-{ _X4 }
-function bezier_ctrl_impl._x4;
-begin
- result:=m_poly._xn(3 );
-
-end;
-
-{ _Y4 }
-function bezier_ctrl_impl._y4;
-begin
- result:=m_poly._yn(3 );
-
-end;
-
-{ X1_ }
-procedure bezier_ctrl_impl.x1_;
-begin
- m_poly.xn_ptr(0 )^:=x;
-
-end;
-
-{ Y1_ }
-procedure bezier_ctrl_impl.y1_;
-begin
- m_poly.yn_ptr(0 )^:=y;
-
-end;
-
-{ X2_ }
-procedure bezier_ctrl_impl.x2_;
-begin
- m_poly.xn_ptr(1 )^:=x;
-
-end;
-
-{ Y2_ }
-procedure bezier_ctrl_impl.y2_;
-begin
- m_poly.yn_ptr(1 )^:=y;
-
-end;
-
-{ X3_ }
-procedure bezier_ctrl_impl.x3_;
-begin
- m_poly.xn_ptr(2 )^:=x;
-
-end;
-
-{ Y3_ }
-procedure bezier_ctrl_impl.y3_;
-begin
- m_poly.yn_ptr(2 )^:=y;
-
-end;
-
-{ X4_ }
-procedure bezier_ctrl_impl.x4_;
-begin
- m_poly.xn_ptr(3 )^:=x;
-
-end;
-
-{ Y4_ }
-procedure bezier_ctrl_impl.y4_;
-begin
- m_poly.yn_ptr(3 )^:=y;
-
-end;
-
-{ LINE_WIDTH_ }
-procedure bezier_ctrl_impl.line_width_;
-begin
- m_stroke.width_(w );
-
-end;
-
-{ _LINE_WIDTH }
-function bezier_ctrl_impl._line_width;
-begin
- result:=m_stroke._width;
-
-end;
-
-{ POINT_RADIUS_ }
-procedure bezier_ctrl_impl.point_radius_;
-begin
- m_poly.point_radius_(r );
-
-end;
-
-{ _POINT_RADIUS }
-function bezier_ctrl_impl._point_radius;
-begin
- result:=m_poly._point_radius;
-
-end;
-
-{ IN_RECT }
-function bezier_ctrl_impl.in_rect;
-begin
- result:=false;
-
-end;
-
-{ ON_MOUSE_BUTTON_DOWN }
-function bezier_ctrl_impl.on_mouse_button_down;
-begin
- inverse_transform_xy(@x ,@y );
-
- result:=m_poly.on_mouse_button_down(x ,y );
-
-end;
-
-{ ON_MOUSE_BUTTON_UP }
-function bezier_ctrl_impl.on_mouse_button_up;
-begin
- result:=m_poly.on_mouse_button_up(x ,y );
-
-end;
-
-{ ON_MOUSE_MOVE }
-function bezier_ctrl_impl.on_mouse_move;
-begin
- inverse_transform_xy(@x ,@y );
-
- result:=m_poly.on_mouse_move(x ,y ,button_flag );
-
-end;
-
-{ ON_ARROW_KEYS }
-function bezier_ctrl_impl.on_arrow_keys;
-begin
- result:=m_poly.on_arrow_keys(left ,right ,down ,up );
-
-end;
-
-{ NUM_PATHS }
-function bezier_ctrl_impl.num_paths;
-begin
- result:=7;
-
-end;
-
-{ REWIND }
-procedure bezier_ctrl_impl.rewind;
-begin
- m_idx:=path_id;
-
- m_curve.approximation_scale_(scale );
-
- case path_id of
- 0 : // Control line 1
- begin
- m_curve.init4(
- m_poly._xn(0 ) ,m_poly._yn(0 ) ,
- (m_poly._xn(0 ) + m_poly._xn(1 ) ) * 0.5 ,
- (m_poly._yn(0 ) + m_poly._yn(1 ) ) * 0.5 ,
- (m_poly._xn(0 ) + m_poly._xn(1 ) ) * 0.5 ,
- (m_poly._yn(0 ) + m_poly._yn(1 ) ) * 0.5 ,
- m_poly._xn(1 ) ,m_poly._yn(1 ) );
-
- m_stroke.rewind(0 );
-
- end;
-
- 1 : // Control line 2
- begin
- m_curve.init4(
- m_poly._xn(2 ) ,m_poly._yn(2 ) ,
- (m_poly._xn(2 ) + m_poly._xn(3 ) ) * 0.5,
- (m_poly._yn(2 ) + m_poly._yn(3 ) ) * 0.5,
- (m_poly._xn(2 ) + m_poly._xn(3 ) ) * 0.5,
- (m_poly._yn(2 ) + m_poly._yn(3 ) ) * 0.5,
- m_poly._xn(3 ) ,m_poly._yn(3 ) );
-
- m_stroke.rewind(0 );
-
- end;
-
- 2 : // Curve itself
- begin
- m_curve.init4(
- m_poly._xn(0 ) ,m_poly._yn(0 ) ,
- m_poly._xn(1 ) ,m_poly._yn(1 ) ,
- m_poly._xn(2 ) ,m_poly._yn(2 ) ,
- m_poly._xn(3 ) ,m_poly._yn(3 ) );
-
- m_stroke.rewind(0 );
-
- end;
-
- 3 : // Point 1
- begin
- m_ellipse.init (m_poly._xn(0 ) ,m_poly._yn(0 ) ,_point_radius ,_point_radius ,20 );
- m_ellipse.rewind(0 );
-
- end;
-
- 4 : // Point 2
- begin
- m_ellipse.init (m_poly._xn(1 ) ,m_poly._yn(1 ) ,_point_radius ,_point_radius ,20 );
- m_ellipse.rewind(0 );
-
- end;
-
- 5 : // Point 3
- begin
- m_ellipse.init (m_poly._xn(2 ) ,m_poly._yn(2 ) ,_point_radius ,_point_radius ,20 );
- m_ellipse.rewind(0 );
-
- end;
-
- 6 : // Point 4
- begin
- m_ellipse.init (m_poly._xn(3 ) ,m_poly._yn(3 ) ,_point_radius ,_point_radius ,20 );
- m_ellipse.rewind(0 );
-
- end;
-
- end;
-
-end;
-
-{ VERTEX }
-function bezier_ctrl_impl.vertex;
-var
- cmd : unsigned;
-
-begin
- cmd:=path_cmd_stop;
-
- case m_idx of
- 0 ,1 ,2 :
- cmd:=m_stroke.vertex(x ,y );
-
- 3 ,4 ,5 ,6 ,7 :
- cmd:=m_ellipse.vertex(x, y);
-
- end;
-
- if not is_stop(cmd ) then
- transform_xy(x ,y );
-
- result:=cmd;
-
-end;
-
-{ CONSTRUCT }
-constructor bezier_ctrl.Construct;
-begin
- inherited Construct;
-
- m_color.ConstrDbl(0.0 ,0.0 ,0.0 );
-
-end;
-
-{ LINE_COLOR_ }
-procedure bezier_ctrl.line_color_;
-begin
- m_color:=c^;
-
-end;
-
-{ _COLOR }
-function bezier_ctrl._color;
-begin
- result:=@m_color;
-
-end;
-
-{ CONSTRUCT }
-constructor curve3_ctrl_impl.Construct;
-begin
- inherited Construct(0 ,0 ,1 ,1 ,false );
-
- m_curve.Construct;
- m_ellipse.Construct;
- m_stroke.Construct(@m_curve );
- m_poly.Construct (3 ,5.0 );
-
- m_idx:=0;
-
- m_poly.in_polygon_check_(false );
-
- m_poly.xn_ptr(0 )^:=100.0;
- m_poly.yn_ptr(0 )^:= 0.0;
- m_poly.xn_ptr(1 )^:=100.0;
- m_poly.yn_ptr(1 )^:= 50.0;
- m_poly.xn_ptr(2 )^:= 50.0;
- m_poly.yn_ptr(2 )^:=100.0;
-
-end;
-
-{ DESTRUCT }
-destructor curve3_ctrl_impl.Destruct;
-begin
- m_curve.Destruct;
- m_stroke.Destruct;
- m_poly.Destruct;
-
-end;
-
-{ CURVE_ }
-procedure curve3_ctrl_impl.curve_;
-begin
- m_poly.xn_ptr(0 )^:=x1;
- m_poly.yn_ptr(0 )^:=y1;
- m_poly.xn_ptr(1 )^:=x2;
- m_poly.yn_ptr(1 )^:=y2;
- m_poly.xn_ptr(2 )^:=x3;
- m_poly.yn_ptr(2 )^:=y3;
-
- _curve;
-
-end;
-
-{ _CURVE }
-function curve3_ctrl_impl._curve;
-begin
- m_curve.init3(
- m_poly._xn(0 ) ,m_poly._yn(0 ) ,
- m_poly._xn(1 ) ,m_poly._yn(1 ) ,
- m_poly._xn(2 ) ,m_poly._yn(2 ) );
-
- result:=@m_curve;
-
-end;
-
-{ _X1 }
-function curve3_ctrl_impl._x1;
-begin
- result:=m_poly._xn(0 );
-
-end;
-
-{ _Y1 }
-function curve3_ctrl_impl._y1;
-begin
- result:=m_poly._yn(0 );
-
-end;
-
-{ _X2 }
-function curve3_ctrl_impl._x2;
-begin
- result:=m_poly._xn(1 );
-
-end;
-
-{ _Y2 }
-function curve3_ctrl_impl._y2;
-begin
- result:=m_poly._yn(1 );
-
-end;
-
-{ _X3 }
-function curve3_ctrl_impl._x3;
-begin
- result:=m_poly._xn(2 );
-
-end;
-
-{ _Y3 }
-function curve3_ctrl_impl._y3;
-begin
- result:=m_poly._yn(2 );
-
-end;
-
-{ X1_ }
-procedure curve3_ctrl_impl.x1_;
-begin
- m_poly.xn_ptr(0 )^:=x;
-
-end;
-
-{ Y1_ }
-procedure curve3_ctrl_impl.y1_;
-begin
- m_poly.yn_ptr(0 )^:=y;
-
-end;
-
-{ X2_ }
-procedure curve3_ctrl_impl.x2_;
-begin
- m_poly.xn_ptr(1 )^:=x;
-
-end;
-
-{ Y2_ }
-procedure curve3_ctrl_impl.y2_;
-begin
- m_poly.yn_ptr(1 )^:=y;
-
-end;
-
-{ X3_ }
-procedure curve3_ctrl_impl.x3_;
-begin
- m_poly.xn_ptr(2 )^:=x;
-
-end;
-
-{ Y3_ }
-procedure curve3_ctrl_impl.y3_;
-begin
- m_poly.yn_ptr(2 )^:=y;
-
-end;
-
-{ LINE_WIDTH_ }
-procedure curve3_ctrl_impl.line_width_;
-begin
- m_stroke.width_(w );
-
-end;
-
-{ _LINE_WIDTH }
-function curve3_ctrl_impl._line_width;
-begin
- result:=m_stroke._width;
-
-end;
-
-{ POINT_RADIUS_ }
-procedure curve3_ctrl_impl.point_radius_;
-begin
- m_poly.point_radius_(r );
-
-end;
-
-{ _POINT_RADIUS }
-function curve3_ctrl_impl._point_radius;
-begin
- result:=m_poly._point_radius;
-
-end;
-
-{ IN_RECT }
-function curve3_ctrl_impl.in_rect;
-begin
- result:=false;
-
-end;
-
-{ ON_MOUSE_BUTTON_DOWN }
-function curve3_ctrl_impl.on_mouse_button_down;
-begin
- inverse_transform_xy(@x ,@y );
-
- result:=m_poly.on_mouse_button_down(x ,y );
-
-end;
-
-{ ON_MOUSE_BUTTON_UP }
-function curve3_ctrl_impl.on_mouse_button_up;
-begin
- result:=m_poly.on_mouse_button_up(x ,y );
-
-end;
-
-{ ON_MOUSE_MOVE }
-function curve3_ctrl_impl.on_mouse_move;
-begin
- inverse_transform_xy(@x ,@y );
-
- result:=m_poly.on_mouse_move(x ,y ,button_flag );
-
-end;
-
-{ ON_ARROW_KEYS }
-function curve3_ctrl_impl.on_arrow_keys;
-begin
- result:=m_poly.on_arrow_keys(left ,right ,down ,up );
-
-end;
-
-{ NUM_PATHS }
-function curve3_ctrl_impl.num_paths;
-begin
- result:=6;
-
-end;
-
-{ REWIND }
-procedure curve3_ctrl_impl.rewind;
-begin
- m_idx:=path_id;
-
- case path_id of
- 0 : // Control line
- begin
- m_curve.init3(
- m_poly._xn(0 ) ,m_poly._yn(0 ) ,
- (m_poly._xn(0 ) + m_poly._xn(1 ) ) * 0.5,
- (m_poly._yn(0 ) + m_poly._yn(1 ) ) * 0.5,
- m_poly._xn(1 ) ,m_poly._yn(1 ) );
-
- m_stroke.rewind(0 );
-
- end;
-
- 1 : // Control line 2
- begin
- m_curve.init3(
- m_poly._xn(1 ) ,m_poly._yn(1 ) ,
- (m_poly._xn(1 ) + m_poly._xn(2 ) ) * 0.5,
- (m_poly._yn(1 ) + m_poly._yn(2 ) ) * 0.5,
- m_poly._xn(2 ) ,m_poly._yn(2 ) );
-
- m_stroke.rewind(0 );
-
- end;
-
- 2 : // Curve itself
- begin
- m_curve.init3(
- m_poly._xn(0 ) ,m_poly._yn(0 ) ,
- m_poly._xn(1 ) ,m_poly._yn(1 ) ,
- m_poly._xn(2 ) ,m_poly._yn(2 ) );
-
- m_stroke.rewind(0 );
-
- end;
-
- 3 : // Point 1
- begin
- m_ellipse.init (m_poly._xn(0 ) ,m_poly._yn(0 ) ,_point_radius ,_point_radius ,20 );
- m_ellipse.rewind(0 );
-
- end;
-
- 4 : // Point 2
- begin
- m_ellipse.init (m_poly._xn(1 ) ,m_poly._yn(1 ) ,_point_radius ,_point_radius ,20 );
- m_ellipse.rewind(0 );
-
- end;
-
- 5 : // Point 3
- begin
- m_ellipse.init (m_poly._xn(2 ) ,m_poly._yn(2 ) ,_point_radius ,_point_radius ,20 );
- m_ellipse.rewind(0 );
-
- end;
-
- end;
-
-end;
-
-{ VERTEX }
-function curve3_ctrl_impl.vertex;
-var
- cmd : unsigned;
-
-begin
- cmd:=path_cmd_stop;
-
- case m_idx of
- 0 ,1 ,2 :
- cmd:=m_stroke.vertex(x ,y );
-
- 3 ,4 ,5 ,6 :
- cmd:=m_ellipse.vertex(x ,y );
-
- end;
-
- if not is_stop(cmd ) then
- transform_xy(x ,y );
-
- result:=cmd;
-
-end;
-
-{ CONSTRUCT }
-constructor curve3_ctrl.Construct;
-begin
- inherited Construct;
-
- m_color.ConstrDbl(0.0 ,0.0 ,0.0 );
-
-end;
-
-{ LINE_COLOR_ }
-procedure curve3_ctrl.line_color_;
-begin
- m_color:=c^;
-
-end;
-
-{ _COLOR }
-function curve3_ctrl._color;
-begin
- result:=@m_color;
-
-end;
-
-END.
-
+//---------------------------------------------------------------------------- +// Anti-Grain Geometry - Version 2.4 (Public License) +// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) +// +// Anti-Grain Geometry - Version 2.4 Release Milano 3 (AggPas 2.4 RM3) +// Pascal Port By: Milan Marusinec alias Milano +// milan@marusinec.sk +// http://www.aggpas.org +// Copyright (c) 2005-2006 +// +// Permission to copy, use, modify, sell and distribute this software +// is granted provided this copyright notice appears in all copies. +// This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. +// +//---------------------------------------------------------------------------- +// Contact: mcseem@antigrain.com +// mcseemagg@yahoo.com +// http://www.antigrain.com +// +//---------------------------------------------------------------------------- +// +// classes bezier_ctrl_impl, bezier_ctrl +// +// [Pascal Port History] ----------------------------------------------------- +// +// 23.02.2006-Milano: Unit port establishment +// +{ agg_bezier_ctrl.pas } +unit + agg_bezier_ctrl ; + +INTERFACE + +{$I agg_mode.inc } + +uses + agg_basics , + agg_ctrl , + agg_math , + agg_ellipse , + agg_trans_affine , + agg_color , + agg_curves , + agg_conv_stroke , + agg_conv_curve , + agg_polygon_ctrl ; + +{ TYPES DEFINITION } +type + bezier_ctrl_impl = object(ctrl ) + m_curve : curve4; + m_ellipse : ellipse; + m_stroke : conv_stroke; + m_poly : polygon_ctrl_impl; + m_idx : unsigned; + + constructor Construct; + destructor Destruct; virtual; + + procedure curve_(x1 ,y1 ,x2 ,y2 ,x3 ,y3 ,x4 ,y4 : double ); + function _curve : curve4_ptr; + + function _x1 : double; + function _y1 : double; + function _x2 : double; + function _y2 : double; + function _x3 : double; + function _y3 : double; + function _x4 : double; + function _y4 : double; + + procedure x1_(x : double ); + procedure y1_(y : double ); + procedure x2_(x : double ); + procedure y2_(y : double ); + procedure x3_(x : double ); + procedure y3_(y : double ); + procedure x4_(x : double ); + procedure y4_(y : double ); + + procedure line_width_(w : double ); + function _line_width : double; + + procedure point_radius_(r : double ); + function _point_radius : double; + + // Event handlers + function in_rect(x ,y : double ) : boolean; virtual; + + function on_mouse_button_down(x ,y : double ) : boolean; virtual; + function on_mouse_button_up (x ,y : double ) : boolean; virtual; + + function on_mouse_move(x ,y : double; button_flag : boolean ) : boolean; virtual; + function on_arrow_keys(left ,right ,down ,up : boolean ) : boolean; virtual; + + // Vertex source interface + function num_paths : unsigned; virtual; + procedure rewind(path_id : unsigned ); virtual; + function vertex(x ,y : double_ptr ) : unsigned; virtual; + + end; + + bezier_ctrl = object(bezier_ctrl_impl ) + m_color : aggclr; + + constructor Construct; + + procedure line_color_(c : aggclr_ptr ); + + function _color(i : unsigned ) : aggclr_ptr; virtual; + + end; + + curve3_ctrl_impl = object(ctrl ) + m_curve : curve3; + m_ellipse : ellipse; + m_stroke : conv_stroke; + m_poly : polygon_ctrl_impl; + m_idx : unsigned; + + constructor Construct; + destructor Destruct; virtual; + + procedure curve_(x1 ,y1 ,x2 ,y2 ,x3 ,y3 : double ); + function _curve : curve3_ptr; + + function _x1 : double; + function _y1 : double; + function _x2 : double; + function _y2 : double; + function _x3 : double; + function _y3 : double; + + procedure x1_(x : double ); + procedure y1_(y : double ); + procedure x2_(x : double ); + procedure y2_(y : double ); + procedure x3_(x : double ); + procedure y3_(y : double ); + + procedure line_width_(w : double ); + function _line_width : double; + + procedure point_radius_(r : double ); + function _point_radius : double; + + // Event handlers + function in_rect(x ,y : double ) : boolean; virtual; + + function on_mouse_button_down(x ,y : double ) : boolean; virtual; + function on_mouse_button_up (x ,y : double ) : boolean; virtual; + + function on_mouse_move(x ,y : double; button_flag : boolean ) : boolean; virtual; + function on_arrow_keys(left ,right ,down ,up : boolean ) : boolean; virtual; + + // Vertex source interface + function num_paths : unsigned; virtual; + procedure rewind(path_id : unsigned ); virtual; + function vertex(x ,y : double_ptr ) : unsigned; virtual; + + end; + + curve3_ctrl = object(curve3_ctrl_impl ) + m_color : aggclr; + + constructor Construct; + + procedure line_color_(c : aggclr_ptr ); + + function _color(i : unsigned ) : aggclr_ptr; virtual; + + end; + +{ GLOBAL PROCEDURES } + + +IMPLEMENTATION +{ LOCAL VARIABLES & CONSTANTS } +{ UNIT IMPLEMENTATION } +{ CONSTRUCT } +constructor bezier_ctrl_impl.Construct; +begin + inherited Construct(0 ,0 ,1 ,1 ,false ); + + m_curve.Construct; + m_ellipse.Construct; + m_stroke.Construct(@m_curve ); + m_poly.Construct (4 ,5.0 ); + + m_idx:=0; + + m_poly.in_polygon_check_(false ); + + m_poly.xn_ptr(0 )^:=100.0; + m_poly.yn_ptr(0 )^:= 0.0; + m_poly.xn_ptr(1 )^:=100.0; + m_poly.yn_ptr(1 )^:= 50.0; + m_poly.xn_ptr(2 )^:= 50.0; + m_poly.yn_ptr(2 )^:=100.0; + m_poly.xn_ptr(3 )^:= 0.0; + m_poly.yn_ptr(3 )^:=100.0; + +end; + +{ DESTRUCT } +destructor bezier_ctrl_impl.Destruct; +begin + m_curve.Destruct; + m_stroke.Destruct; + m_poly.Destruct; + +end; + +{ CURVE_ } +procedure bezier_ctrl_impl.curve_; +begin + m_poly.xn_ptr(0 )^:=x1; + m_poly.yn_ptr(0 )^:=y1; + m_poly.xn_ptr(1 )^:=x2; + m_poly.yn_ptr(1 )^:=y2; + m_poly.xn_ptr(2 )^:=x3; + m_poly.yn_ptr(2 )^:=y3; + m_poly.xn_ptr(3 )^:=x4; + m_poly.yn_ptr(3 )^:=y4; + + _curve; + +end; + +{ _CURVE } +function bezier_ctrl_impl._curve; +begin + m_curve.init4( + m_poly._xn(0 ) ,m_poly._yn(0 ) , + m_poly._xn(1 ) ,m_poly._yn(1 ) , + m_poly._xn(2 ) ,m_poly._yn(2 ) , + m_poly._xn(3 ) ,m_poly._yn(3 ) ); + + result:=@m_curve; + +end; + +{ _X1 } +function bezier_ctrl_impl._x1; +begin + result:=m_poly._xn(0 ); + +end; + +{ _Y1 } +function bezier_ctrl_impl._y1; +begin + result:=m_poly._yn(0 ); + +end; + +{ _X2 } +function bezier_ctrl_impl._x2; +begin + result:=m_poly._xn(1 ); + +end; + +{ _Y2 } +function bezier_ctrl_impl._y2; +begin + result:=m_poly._yn(1 ); + +end; + +{ _X3 } +function bezier_ctrl_impl._x3; +begin + result:=m_poly._xn(2 ); + +end; + +{ _Y3 } +function bezier_ctrl_impl._y3; +begin + result:=m_poly._yn(2 ); + +end; + +{ _X4 } +function bezier_ctrl_impl._x4; +begin + result:=m_poly._xn(3 ); + +end; + +{ _Y4 } +function bezier_ctrl_impl._y4; +begin + result:=m_poly._yn(3 ); + +end; + +{ X1_ } +procedure bezier_ctrl_impl.x1_; +begin + m_poly.xn_ptr(0 )^:=x; + +end; + +{ Y1_ } +procedure bezier_ctrl_impl.y1_; +begin + m_poly.yn_ptr(0 )^:=y; + +end; + +{ X2_ } +procedure bezier_ctrl_impl.x2_; +begin + m_poly.xn_ptr(1 )^:=x; + +end; + +{ Y2_ } +procedure bezier_ctrl_impl.y2_; +begin + m_poly.yn_ptr(1 )^:=y; + +end; + +{ X3_ } +procedure bezier_ctrl_impl.x3_; +begin + m_poly.xn_ptr(2 )^:=x; + +end; + +{ Y3_ } +procedure bezier_ctrl_impl.y3_; +begin + m_poly.yn_ptr(2 )^:=y; + +end; + +{ X4_ } +procedure bezier_ctrl_impl.x4_; +begin + m_poly.xn_ptr(3 )^:=x; + +end; + +{ Y4_ } +procedure bezier_ctrl_impl.y4_; +begin + m_poly.yn_ptr(3 )^:=y; + +end; + +{ LINE_WIDTH_ } +procedure bezier_ctrl_impl.line_width_; +begin + m_stroke.width_(w ); + +end; + +{ _LINE_WIDTH } +function bezier_ctrl_impl._line_width; +begin + result:=m_stroke._width; + +end; + +{ POINT_RADIUS_ } +procedure bezier_ctrl_impl.point_radius_; +begin + m_poly.point_radius_(r ); + +end; + +{ _POINT_RADIUS } +function bezier_ctrl_impl._point_radius; +begin + result:=m_poly._point_radius; + +end; + +{ IN_RECT } +function bezier_ctrl_impl.in_rect; +begin + result:=false; + +end; + +{ ON_MOUSE_BUTTON_DOWN } +function bezier_ctrl_impl.on_mouse_button_down; +begin + inverse_transform_xy(@x ,@y ); + + result:=m_poly.on_mouse_button_down(x ,y ); + +end; + +{ ON_MOUSE_BUTTON_UP } +function bezier_ctrl_impl.on_mouse_button_up; +begin + result:=m_poly.on_mouse_button_up(x ,y ); + +end; + +{ ON_MOUSE_MOVE } +function bezier_ctrl_impl.on_mouse_move; +begin + inverse_transform_xy(@x ,@y ); + + result:=m_poly.on_mouse_move(x ,y ,button_flag ); + +end; + +{ ON_ARROW_KEYS } +function bezier_ctrl_impl.on_arrow_keys; +begin + result:=m_poly.on_arrow_keys(left ,right ,down ,up ); + +end; + +{ NUM_PATHS } +function bezier_ctrl_impl.num_paths; +begin + result:=7; + +end; + +{ REWIND } +procedure bezier_ctrl_impl.rewind; +begin + m_idx:=path_id; + + m_curve.approximation_scale_(scale ); + + case path_id of + 0 : // Control line 1 + begin + m_curve.init4( + m_poly._xn(0 ) ,m_poly._yn(0 ) , + (m_poly._xn(0 ) + m_poly._xn(1 ) ) * 0.5 , + (m_poly._yn(0 ) + m_poly._yn(1 ) ) * 0.5 , + (m_poly._xn(0 ) + m_poly._xn(1 ) ) * 0.5 , + (m_poly._yn(0 ) + m_poly._yn(1 ) ) * 0.5 , + m_poly._xn(1 ) ,m_poly._yn(1 ) ); + + m_stroke.rewind(0 ); + + end; + + 1 : // Control line 2 + begin + m_curve.init4( + m_poly._xn(2 ) ,m_poly._yn(2 ) , + (m_poly._xn(2 ) + m_poly._xn(3 ) ) * 0.5, + (m_poly._yn(2 ) + m_poly._yn(3 ) ) * 0.5, + (m_poly._xn(2 ) + m_poly._xn(3 ) ) * 0.5, + (m_poly._yn(2 ) + m_poly._yn(3 ) ) * 0.5, + m_poly._xn(3 ) ,m_poly._yn(3 ) ); + + m_stroke.rewind(0 ); + + end; + + 2 : // Curve itself + begin + m_curve.init4( + m_poly._xn(0 ) ,m_poly._yn(0 ) , + m_poly._xn(1 ) ,m_poly._yn(1 ) , + m_poly._xn(2 ) ,m_poly._yn(2 ) , + m_poly._xn(3 ) ,m_poly._yn(3 ) ); + + m_stroke.rewind(0 ); + + end; + + 3 : // Point 1 + begin + m_ellipse.init (m_poly._xn(0 ) ,m_poly._yn(0 ) ,_point_radius ,_point_radius ,20 ); + m_ellipse.rewind(0 ); + + end; + + 4 : // Point 2 + begin + m_ellipse.init (m_poly._xn(1 ) ,m_poly._yn(1 ) ,_point_radius ,_point_radius ,20 ); + m_ellipse.rewind(0 ); + + end; + + 5 : // Point 3 + begin + m_ellipse.init (m_poly._xn(2 ) ,m_poly._yn(2 ) ,_point_radius ,_point_radius ,20 ); + m_ellipse.rewind(0 ); + + end; + + 6 : // Point 4 + begin + m_ellipse.init (m_poly._xn(3 ) ,m_poly._yn(3 ) ,_point_radius ,_point_radius ,20 ); + m_ellipse.rewind(0 ); + + end; + + end; + +end; + +{ VERTEX } +function bezier_ctrl_impl.vertex; +var + cmd : unsigned; + +begin + cmd:=path_cmd_stop; + + case m_idx of + 0 ,1 ,2 : + cmd:=m_stroke.vertex(x ,y ); + + 3 ,4 ,5 ,6 ,7 : + cmd:=m_ellipse.vertex(x, y); + + end; + + if not is_stop(cmd ) then + transform_xy(x ,y ); + + result:=cmd; + +end; + +{ CONSTRUCT } +constructor bezier_ctrl.Construct; +begin + inherited Construct; + + m_color.ConstrDbl(0.0 ,0.0 ,0.0 ); + +end; + +{ LINE_COLOR_ } +procedure bezier_ctrl.line_color_; +begin + m_color:=c^; + +end; + +{ _COLOR } +function bezier_ctrl._color; +begin + result:=@m_color; + +end; + +{ CONSTRUCT } +constructor curve3_ctrl_impl.Construct; +begin + inherited Construct(0 ,0 ,1 ,1 ,false ); + + m_curve.Construct; + m_ellipse.Construct; + m_stroke.Construct(@m_curve ); + m_poly.Construct (3 ,5.0 ); + + m_idx:=0; + + m_poly.in_polygon_check_(false ); + + m_poly.xn_ptr(0 )^:=100.0; + m_poly.yn_ptr(0 )^:= 0.0; + m_poly.xn_ptr(1 )^:=100.0; + m_poly.yn_ptr(1 )^:= 50.0; + m_poly.xn_ptr(2 )^:= 50.0; + m_poly.yn_ptr(2 )^:=100.0; + +end; + +{ DESTRUCT } +destructor curve3_ctrl_impl.Destruct; +begin + m_curve.Destruct; + m_stroke.Destruct; + m_poly.Destruct; + +end; + +{ CURVE_ } +procedure curve3_ctrl_impl.curve_; +begin + m_poly.xn_ptr(0 )^:=x1; + m_poly.yn_ptr(0 )^:=y1; + m_poly.xn_ptr(1 )^:=x2; + m_poly.yn_ptr(1 )^:=y2; + m_poly.xn_ptr(2 )^:=x3; + m_poly.yn_ptr(2 )^:=y3; + + _curve; + +end; + +{ _CURVE } +function curve3_ctrl_impl._curve; +begin + m_curve.init3( + m_poly._xn(0 ) ,m_poly._yn(0 ) , + m_poly._xn(1 ) ,m_poly._yn(1 ) , + m_poly._xn(2 ) ,m_poly._yn(2 ) ); + + result:=@m_curve; + +end; + +{ _X1 } +function curve3_ctrl_impl._x1; +begin + result:=m_poly._xn(0 ); + +end; + +{ _Y1 } +function curve3_ctrl_impl._y1; +begin + result:=m_poly._yn(0 ); + +end; + +{ _X2 } +function curve3_ctrl_impl._x2; +begin + result:=m_poly._xn(1 ); + +end; + +{ _Y2 } +function curve3_ctrl_impl._y2; +begin + result:=m_poly._yn(1 ); + +end; + +{ _X3 } +function curve3_ctrl_impl._x3; +begin + result:=m_poly._xn(2 ); + +end; + +{ _Y3 } +function curve3_ctrl_impl._y3; +begin + result:=m_poly._yn(2 ); + +end; + +{ X1_ } +procedure curve3_ctrl_impl.x1_; +begin + m_poly.xn_ptr(0 )^:=x; + +end; + +{ Y1_ } +procedure curve3_ctrl_impl.y1_; +begin + m_poly.yn_ptr(0 )^:=y; + +end; + +{ X2_ } +procedure curve3_ctrl_impl.x2_; +begin + m_poly.xn_ptr(1 )^:=x; + +end; + +{ Y2_ } +procedure curve3_ctrl_impl.y2_; +begin + m_poly.yn_ptr(1 )^:=y; + +end; + +{ X3_ } +procedure curve3_ctrl_impl.x3_; +begin + m_poly.xn_ptr(2 )^:=x; + +end; + +{ Y3_ } +procedure curve3_ctrl_impl.y3_; +begin + m_poly.yn_ptr(2 )^:=y; + +end; + +{ LINE_WIDTH_ } +procedure curve3_ctrl_impl.line_width_; +begin + m_stroke.width_(w ); + +end; + +{ _LINE_WIDTH } +function curve3_ctrl_impl._line_width; +begin + result:=m_stroke._width; + +end; + +{ POINT_RADIUS_ } +procedure curve3_ctrl_impl.point_radius_; +begin + m_poly.point_radius_(r ); + +end; + +{ _POINT_RADIUS } +function curve3_ctrl_impl._point_radius; +begin + result:=m_poly._point_radius; + +end; + +{ IN_RECT } +function curve3_ctrl_impl.in_rect; +begin + result:=false; + +end; + +{ ON_MOUSE_BUTTON_DOWN } +function curve3_ctrl_impl.on_mouse_button_down; +begin + inverse_transform_xy(@x ,@y ); + + result:=m_poly.on_mouse_button_down(x ,y ); + +end; + +{ ON_MOUSE_BUTTON_UP } +function curve3_ctrl_impl.on_mouse_button_up; +begin + result:=m_poly.on_mouse_button_up(x ,y ); + +end; + +{ ON_MOUSE_MOVE } +function curve3_ctrl_impl.on_mouse_move; +begin + inverse_transform_xy(@x ,@y ); + + result:=m_poly.on_mouse_move(x ,y ,button_flag ); + +end; + +{ ON_ARROW_KEYS } +function curve3_ctrl_impl.on_arrow_keys; +begin + result:=m_poly.on_arrow_keys(left ,right ,down ,up ); + +end; + +{ NUM_PATHS } +function curve3_ctrl_impl.num_paths; +begin + result:=6; + +end; + +{ REWIND } +procedure curve3_ctrl_impl.rewind; +begin + m_idx:=path_id; + + case path_id of + 0 : // Control line + begin + m_curve.init3( + m_poly._xn(0 ) ,m_poly._yn(0 ) , + (m_poly._xn(0 ) + m_poly._xn(1 ) ) * 0.5, + (m_poly._yn(0 ) + m_poly._yn(1 ) ) * 0.5, + m_poly._xn(1 ) ,m_poly._yn(1 ) ); + + m_stroke.rewind(0 ); + + end; + + 1 : // Control line 2 + begin + m_curve.init3( + m_poly._xn(1 ) ,m_poly._yn(1 ) , + (m_poly._xn(1 ) + m_poly._xn(2 ) ) * 0.5, + (m_poly._yn(1 ) + m_poly._yn(2 ) ) * 0.5, + m_poly._xn(2 ) ,m_poly._yn(2 ) ); + + m_stroke.rewind(0 ); + + end; + + 2 : // Curve itself + begin + m_curve.init3( + m_poly._xn(0 ) ,m_poly._yn(0 ) , + m_poly._xn(1 ) ,m_poly._yn(1 ) , + m_poly._xn(2 ) ,m_poly._yn(2 ) ); + + m_stroke.rewind(0 ); + + end; + + 3 : // Point 1 + begin + m_ellipse.init (m_poly._xn(0 ) ,m_poly._yn(0 ) ,_point_radius ,_point_radius ,20 ); + m_ellipse.rewind(0 ); + + end; + + 4 : // Point 2 + begin + m_ellipse.init (m_poly._xn(1 ) ,m_poly._yn(1 ) ,_point_radius ,_point_radius ,20 ); + m_ellipse.rewind(0 ); + + end; + + 5 : // Point 3 + begin + m_ellipse.init (m_poly._xn(2 ) ,m_poly._yn(2 ) ,_point_radius ,_point_radius ,20 ); + m_ellipse.rewind(0 ); + + end; + + end; + +end; + +{ VERTEX } +function curve3_ctrl_impl.vertex; +var + cmd : unsigned; + +begin + cmd:=path_cmd_stop; + + case m_idx of + 0 ,1 ,2 : + cmd:=m_stroke.vertex(x ,y ); + + 3 ,4 ,5 ,6 : + cmd:=m_ellipse.vertex(x ,y ); + + end; + + if not is_stop(cmd ) then + transform_xy(x ,y ); + + result:=cmd; + +end; + +{ CONSTRUCT } +constructor curve3_ctrl.Construct; +begin + inherited Construct; + + m_color.ConstrDbl(0.0 ,0.0 ,0.0 ); + +end; + +{ LINE_COLOR_ } +procedure curve3_ctrl.line_color_; +begin + m_color:=c^; + +end; + +{ _COLOR } +function curve3_ctrl._color; +begin + result:=@m_color; + +end; + +END. + |