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-rw-r--r--src/corelib/render/software/ctrl/agg_spline_ctrl.pas1632
1 files changed, 816 insertions, 816 deletions
diff --git a/src/corelib/render/software/ctrl/agg_spline_ctrl.pas b/src/corelib/render/software/ctrl/agg_spline_ctrl.pas
index 255bdb27..71e05a1a 100644
--- a/src/corelib/render/software/ctrl/agg_spline_ctrl.pas
+++ b/src/corelib/render/software/ctrl/agg_spline_ctrl.pas
@@ -1,816 +1,816 @@
-//----------------------------------------------------------------------------
-// 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 spline_ctrl_impl, spline_ctrl
-//
-// Class that can be used to create an interactive control to set up
-// gamma arrays.
-//
-// [Pascal Port History] -----------------------------------------------------
-//
-// 23.02.2006-Milano: Unit port establishment
-//
-{ agg_spline_ctrl.pas }
-unit
- agg_spline_ctrl ;
-
-INTERFACE
-
-{$I agg_mode.inc }
-
-uses
- agg_basics ,
- agg_ellipse ,
- agg_bspline ,
- agg_conv_stroke ,
- agg_path_storage ,
- agg_trans_affine ,
- agg_color ,
- agg_ctrl ,
- agg_math ;
-
-{ TYPES DEFINITION }
-type
- spline_ctrl_impl = object(ctrl )
- m_num_pnt : unsigned;
-
- m_xp ,
- m_yp : array[0..31 ] of double;
-
- m_spline : bspline;
-
- m_spline_values : array[0..255 ] of double;
- m_spline_values8 : array[0..255 ] of int8u;
- m_border_width ,
- m_border_extra ,
- m_curve_width ,
- m_point_size ,
-
- m_xs1 ,
- m_ys1 ,
- m_xs2 ,
- m_ys2 : double;
-
- m_curve_pnt : path_storage;
- m_curve_poly : conv_stroke;
- m_ellipse : ellipse;
-
- m_idx ,
- m_vertex : unsigned;
-
- m_vx ,
- m_vy : array[0..31 ] of double;
-
- m_active_pnt ,
- m_move_pnt : int;
-
- m_pdx ,
- m_pdy : double;
-
- constructor Construct(x1 ,y1 ,x2 ,y2 : double; num_pnt : unsigned; flip_y : boolean = false );
- destructor Destruct; virtual;
-
- // Set other parameters
- procedure border_width_(t : double; extra : double = 0.0 );
- procedure curve_width_ (t : double );
- procedure point_size_ (s : double );
-
- // Event handlers. Just call them if the respective events
- // in your system occure. The functions return true if redrawing
- // is required.
- 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;
-
- // Spline
- procedure active_point_(i : int );
-
- function _spline : double_ptr;
- function _spline8 : int8u_ptr;
-
- function _value(x : double ) : double;
- procedure value_(idx : unsigned; y : double );
- procedure point_(idx : unsigned; x ,y : double );
-
- procedure x_(idx : unsigned; x : double );
- procedure y_(idx : unsigned; y : double );
- function _x(idx : unsigned ) : double;
- function _y(idx : unsigned ) : double;
-
- procedure update_spline;
-
- // Vertex soutce interface
- function num_paths : unsigned; virtual;
- procedure rewind(path_id : unsigned ); virtual;
- function vertex(x ,y : double_ptr ) : unsigned; virtual;
-
- // Private
- procedure calc_spline_box;
- procedure calc_curve;
- function calc_xp(idx : unsigned ) : double;
- function calc_yp(idx : unsigned ) : double;
- procedure set_xp (idx : unsigned; val : double );
- procedure set_yp (idx : unsigned; val : double );
-
- end;
-
- spline_ctrl = object(spline_ctrl_impl )
- m_background_color ,
- m_border_color ,
- m_curve_color ,
- m_inactive_pnt_color ,
- m_active_pnt_color : aggclr;
-
- m_colors : array[0..4 ] of aggclr_ptr;
-
- constructor Construct(x1 ,y1 ,x2 ,y2 : double; num_pnt : unsigned; flip_y : boolean = false );
-
- procedure background_color_ (c : aggclr_ptr );
- procedure border_color_ (c : aggclr_ptr );
- procedure curve_color_ (c : aggclr_ptr );
- procedure inactive_pnt_color_(c : aggclr_ptr );
- procedure active_pnt_color_ (c : aggclr_ptr );
-
- function _color(i : unsigned ) : aggclr_ptr; virtual;
-
- end;
-
-{ GLOBAL PROCEDURES }
-
-
-IMPLEMENTATION
-{ LOCAL VARIABLES & CONSTANTS }
-{ UNIT IMPLEMENTATION }
-{ CONSTRUCT }
-constructor spline_ctrl_impl.Construct;
-var
- i : unsigned;
-
-begin
- inherited Construct(x1 ,y1 ,x2 ,y2 ,flip_y );
-
- m_num_pnt:=num_pnt;
-
- m_border_width:=1.0;
- m_border_extra:=0.0;
- m_curve_width :=1.0;
- m_point_size :=3.0;
-
- m_spline.Construct;
- m_curve_pnt.Construct;
- m_curve_poly.Construct(@m_curve_pnt );
- m_ellipse.Construct;
-
- m_idx :=0;
- m_vertex :=0;
- m_active_pnt:=-1;
- m_move_pnt :=-1;
-
- m_pdx:=0.0;
- m_pdy:=0.0;
-
- if m_num_pnt < 4 then
- m_num_pnt:=4;
-
- if m_num_pnt > 32 then
- m_num_pnt:=32;
-
- for i:=0 to m_num_pnt - 1 do
- begin
- m_xp[i ]:=i / (m_num_pnt - 1 );
- m_yp[i ]:=0.5;
-
- end;
-
- calc_spline_box;
- update_spline;
-
-end;
-
-{ DESTRUCT }
-destructor spline_ctrl_impl.Destruct;
-begin
- m_spline.Destruct;
- m_curve_pnt.Destruct;
- m_curve_poly.Destruct;
-
-end;
-
-{ BORDER_WIDTH_ }
-procedure spline_ctrl_impl.border_width_;
-begin
- m_border_width:=t;
- m_border_extra:=extra;
-
- calc_spline_box;
-
-end;
-
-{ CURVE_WIDTH_ }
-procedure spline_ctrl_impl.curve_width_;
-begin
- m_curve_width:=t;
-
-end;
-
-{ POINT_SIZE_ }
-procedure spline_ctrl_impl.point_size_;
-begin
- m_point_size:=s;
-
-end;
-
-{ IN_RECT }
-function spline_ctrl_impl.in_rect;
-begin
- inverse_transform_xy(@x ,@y );
-
- result:=
- (x >= m_x1 ) and
- (x <= m_x2 ) and
- (y >= m_y1 ) and
- (y <= m_y2 );
-
-end;
-
-{ ON_MOUSE_BUTTON_DOWN }
-function spline_ctrl_impl.on_mouse_button_down;
-var
- i : unsigned;
-
- xp ,yp : double;
-
-begin
- inverse_transform_xy(@x ,@y );
-
- for i:=0 to m_num_pnt - 1 do
- begin
- xp:=calc_xp(i );
- yp:=calc_yp(i );
-
- if calc_distance(x ,y ,xp ,yp ) <= m_point_size + 1 then
- begin
- m_pdx:=xp - x;
- m_pdy:=yp - y;
-
- m_active_pnt:=i;
- m_move_pnt :=i;
-
- result:=true;
-
- exit;
-
- end;
-
- end;
-
- result:=false;
-
-end;
-
-{ ON_MOUSE_BUTTON_UP }
-function spline_ctrl_impl.on_mouse_button_up;
-begin
- if m_move_pnt >= 0 then
- begin
- m_move_pnt:=-1;
-
- result:=true;
-
- end
- else
- result:=false;
-
-end;
-
-{ ON_MOUSE_MOVE }
-function spline_ctrl_impl.on_mouse_move;
-var
- xp ,yp : double;
-
-begin
- inverse_transform_xy(@x ,@y );
-
- if not button_flag then
- begin
- result:=on_mouse_button_up(x ,y );
-
- exit;
-
- end;
-
- if m_move_pnt >= 0 then
- begin
- xp:=x + m_pdx;
- yp:=y + m_pdy;
-
- set_xp(m_move_pnt ,(xp - m_xs1 ) / (m_xs2 - m_xs1 ) );
- set_yp(m_move_pnt ,(yp - m_ys1 ) / (m_ys2 - m_ys1 ) );
-
- update_spline;
-
- result:=true;
-
- end
- else
- result:=false;
-
-end;
-
-{ ON_ARROW_KEYS }
-function spline_ctrl_impl.on_arrow_keys;
-var
- kx ,ky : double;
-
- ret : boolean;
-
-begin
- kx :=0.0;
- ky :=0.0;
- ret:=false;
-
- if m_active_pnt >= 0 then
- begin
- kx:=m_xp[m_active_pnt ];
- ky:=m_yp[m_active_pnt ];
-
- if left then
- begin
- kx :=kx - 0.001;
- ret:=true;
-
- end;
-
- if right then
- begin
- kx :=kx + 0.001;
- ret:=true;
-
- end;
-
- if down then
- begin
- ky :=ky - 0.001;
- ret:=true;
-
- end;
-
- if up then
- begin
- ky :=ky + 0.001;
- ret:=true;
-
- end;
-
- end;
-
- if ret then
- begin
- set_xp(m_active_pnt ,kx );
- set_yp(m_active_pnt ,ky );
-
- update_spline;
-
- end;
-
- result:=ret;
-
-end;
-
-{ ACTIVE_POINT_ }
-procedure spline_ctrl_impl.active_point_;
-begin
- m_active_pnt:=i;
-
-end;
-
-{ _SPLINE }
-function spline_ctrl_impl._spline;
-begin
- result:=@m_spline_values;
-
-end;
-
-{ _SPLINE8 }
-function spline_ctrl_impl._spline8;
-begin
- result:=@m_spline_values8;
-
-end;
-
-{ _VALUE }
-function spline_ctrl_impl._value;
-begin
- x:=m_spline.get(x );
-
- if x < 0.0 then
- x:=0.0;
-
- if x > 1.0 then
- x:=1.0;
-
- result:=x;
-
-end;
-
-{ VALUE_ }
-procedure spline_ctrl_impl.value_;
-begin
- if idx < m_num_pnt then
- set_yp(idx ,y );
-
-end;
-
-{ POINT_ }
-procedure spline_ctrl_impl.point_;
-begin
- if idx < m_num_pnt then
- begin
- set_xp(idx ,x );
- set_yp(idx ,y );
-
- end;
-
-end;
-
-{ X_ }
-procedure spline_ctrl_impl.x_;
-begin
- m_xp[idx ]:=x;
-
-end;
-
-{ Y_ }
-procedure spline_ctrl_impl.y_;
-begin
- m_yp[idx ]:=y;
-
-end;
-
-{ _X }
-function spline_ctrl_impl._x;
-begin
- result:=m_xp[idx ];
-
-end;
-
-{ _Y }
-function spline_ctrl_impl._y;
-begin
- result:=m_yp[idx ];
-
-end;
-
-{ UPDATE_SPLINE }
-procedure spline_ctrl_impl.update_spline;
-var
- i : int;
-
-begin
- m_spline.init(m_num_pnt ,@m_xp ,@m_yp );
-
- for i:=0 to 255 do
- begin
- m_spline_values[i ]:=m_spline.get(i / 255.0 );
-
- if m_spline_values[i ] < 0.0 then
- m_spline_values[i ]:=0.0;
-
- if m_spline_values[i ] > 1.0 then
- m_spline_values[i ]:=1.0;
-
- m_spline_values8[i ]:=int8u(trunc(m_spline_values[i ] * 255.0 ) );
-
- end;
-
-end;
-
-{ NUM_PATHS }
-function spline_ctrl_impl.num_paths;
-begin
- result:=5;
-
-end;
-
-{ REWIND }
-procedure spline_ctrl_impl.rewind;
-var
- i : unsigned;
-
-begin
- m_idx:=path_id;
-
- case path_id of
- 0 : // Background
- begin
- m_vertex:=0;
-
- m_vx[0 ]:=m_x1 - m_border_extra;
- m_vy[0 ]:=m_y1 - m_border_extra;
- m_vx[1 ]:=m_x2 + m_border_extra;
- m_vy[1 ]:=m_y1 - m_border_extra;
- m_vx[2 ]:=m_x2 + m_border_extra;
- m_vy[2 ]:=m_y2 + m_border_extra;
- m_vx[3 ]:=m_x1 - m_border_extra;
- m_vy[3 ]:=m_y2 + m_border_extra;
-
- end;
-
- 1 : // Border
- begin
- m_vertex:=0;
-
- m_vx[0 ]:=m_x1;
- m_vy[0 ]:=m_y1;
- m_vx[1 ]:=m_x2;
- m_vy[1 ]:=m_y1;
- m_vx[2 ]:=m_x2;
- m_vy[2 ]:=m_y2;
- m_vx[3 ]:=m_x1;
- m_vy[3 ]:=m_y2;
- m_vx[4 ]:=m_x1 + m_border_width;
- m_vy[4 ]:=m_y1 + m_border_width;
- m_vx[5 ]:=m_x1 + m_border_width;
- m_vy[5 ]:=m_y2 - m_border_width;
- m_vx[6 ]:=m_x2 - m_border_width;
- m_vy[6 ]:=m_y2 - m_border_width;
- m_vx[7 ]:=m_x2 - m_border_width;
- m_vy[7 ]:=m_y1 + m_border_width;
-
- end;
-
- 2 : // Curve
- begin
- calc_curve;
-
- m_curve_poly.width_(m_curve_width );
- m_curve_poly.rewind(0 );
-
- end;
-
- 3 : // Inactive points
- begin
- m_curve_pnt.remove_all;
-
- for i:=0 to m_num_pnt - 1 do
- if i <> m_active_pnt then
- begin
- m_ellipse.init(
- calc_xp(i ) ,calc_yp(i ) ,
- m_point_size ,m_point_size ,32 );
-
- m_curve_pnt.add_path(@m_ellipse ,0 ,false );
-
- end;
-
- m_curve_poly.rewind(0 );
-
- end;
-
- 4 : // Active point
- begin
- m_curve_pnt.remove_all;
-
- if m_active_pnt >= 0 then
- begin
- m_ellipse.init(
- calc_xp(m_active_pnt ) ,calc_yp(m_active_pnt ) ,
- m_point_size ,m_point_size ,32 );
-
- m_curve_pnt.add_path(@m_ellipse );
-
- end;
-
- m_curve_poly.rewind(0 );
-
- end;
-
- end;
-
-end;
-
-{ VERTEX }
-function spline_ctrl_impl.vertex;
-var
- cmd : unsigned;
-
-begin
- cmd:=path_cmd_line_to;
-
- case m_idx of
- 0 :
- begin
- if m_vertex = 0 then
- cmd:=path_cmd_move_to;
-
- if m_vertex >= 4 then
- cmd:=path_cmd_stop;
-
- x^:=m_vx[m_vertex ];
- y^:=m_vy[m_vertex ];
-
- inc(m_vertex );
-
- end;
-
- 1 :
- begin
- if (m_vertex = 0 ) or
- (m_vertex = 4 ) then
- cmd:=path_cmd_move_to;
-
- if m_vertex >= 8 then
- cmd:=path_cmd_stop;
-
- x^:=m_vx[m_vertex ];
- y^:=m_vy[m_vertex ];
-
- inc(m_vertex );
-
- end;
-
- 2 :
- cmd:=m_curve_poly.vertex(x ,y );
-
- 3 ,4 :
- cmd:=m_curve_pnt.vertex(x ,y );
-
- else
- cmd:=path_cmd_stop;
-
- end;
-
- if not is_stop(cmd ) then
- transform_xy(x ,y );
-
- result:=cmd;
-
-end;
-
-{ CALC_SPLINE_BOX }
-procedure spline_ctrl_impl.calc_spline_box;
-begin
- m_xs1:=m_x1 + m_border_width;
- m_ys1:=m_y1 + m_border_width;
- m_xs2:=m_x2 - m_border_width;
- m_ys2:=m_y2 - m_border_width;
-
-end;
-
-{ CALC_CURVE }
-procedure spline_ctrl_impl.calc_curve;
-var
- i : int;
-
-begin
- m_curve_pnt.remove_all;
- m_curve_pnt.move_to(m_xs1 ,m_ys1 + (m_ys2 - m_ys1 ) * m_spline_values[0 ] );
-
- for i:=1 to 255 do
- m_curve_pnt.line_to(
- m_xs1 + (m_xs2 - m_xs1 ) * i / 255.0 ,
- m_ys1 + (m_ys2 - m_ys1 ) * m_spline_values[i ] );
-
-end;
-
-{ CALC_XP }
-function spline_ctrl_impl.calc_xp;
-begin
- result:=m_xs1 + (m_xs2 - m_xs1 ) * m_xp[idx ];
-
-end;
-
-{ CALC_YP }
-function spline_ctrl_impl.calc_yp;
-begin
- result:=m_ys1 + (m_ys2 - m_ys1 ) * m_yp[idx ];
-
-end;
-
-{ SET_XP }
-procedure spline_ctrl_impl.set_xp;
-begin
- if val < 0.0 then
- val:=0.0;
-
- if val > 1.0 then
- val:=1.0;
-
- if idx = 0 then
- val:=0.0
- else
- if idx = m_num_pnt - 1 then
- val:=1.0
- else
- begin
- if val < m_xp[idx - 1 ] + 0.001 then
- val:=m_xp[idx - 1 ] + 0.001;
-
- if val > m_xp[idx + 1 ] - 0.001 then
- val:=m_xp[idx + 1 ] - 0.001;
-
- end;
-
- m_xp[idx ]:=val;
-
-end;
-
-{ SET_YP }
-procedure spline_ctrl_impl.set_yp;
-begin
- if val < 0.0 then
- val:=0.0;
-
- if val > 1.0 then
- val:=1.0;
-
- m_yp[idx ]:=val;
-
-end;
-
-{ CONSTRUCT }
-constructor spline_ctrl.Construct;
-begin
- inherited Construct(x1 ,y1 ,x2 ,y2 ,num_pnt ,flip_y );
-
- m_background_color.ConstrDbl (1.0 ,1.0 ,0.9 );
- m_border_color.ConstrDbl (0.0 ,0.0 ,0.0 );
- m_curve_color.ConstrDbl (0.0 ,0.0 ,0.0 );
- m_inactive_pnt_color.ConstrDbl(0.0 ,0.0 ,0.0 );
- m_active_pnt_color.ConstrDbl (1.0 ,0.0 ,0.0 );
-
- m_colors[0 ]:=@m_background_color;
- m_colors[1 ]:=@m_border_color;
- m_colors[2 ]:=@m_curve_color;
- m_colors[3 ]:=@m_inactive_pnt_color;
- m_colors[4 ]:=@m_active_pnt_color;
-
-end;
-
-{ BACKGROUND_COLOR_ }
-procedure spline_ctrl.background_color_;
-begin
- m_background_color:=c^;
-
-end;
-
-{ BORDER_COLOR_ }
-procedure spline_ctrl.border_color_;
-begin
- m_border_color:=c^;
-
-end;
-
-{ CURVE_COLOR_ }
-procedure spline_ctrl.curve_color_;
-begin
- m_curve_color:=c^;
-
-end;
-
-{ INACTIVE_PNT_COLOR_ }
-procedure spline_ctrl.inactive_pnt_color_;
-begin
- m_inactive_pnt_color:=c^;
-
-end;
-
-{ ACTIVE_PNT_COLOR_ }
-procedure spline_ctrl.active_pnt_color_;
-begin
- m_active_pnt_color:=c^;
-
-end;
-
-{ _COLOR }
-function spline_ctrl._color;
-begin
- result:=m_colors[i ];
-
-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 spline_ctrl_impl, spline_ctrl
+//
+// Class that can be used to create an interactive control to set up
+// gamma arrays.
+//
+// [Pascal Port History] -----------------------------------------------------
+//
+// 23.02.2006-Milano: Unit port establishment
+//
+{ agg_spline_ctrl.pas }
+unit
+ agg_spline_ctrl ;
+
+INTERFACE
+
+{$I agg_mode.inc }
+
+uses
+ agg_basics ,
+ agg_ellipse ,
+ agg_bspline ,
+ agg_conv_stroke ,
+ agg_path_storage ,
+ agg_trans_affine ,
+ agg_color ,
+ agg_ctrl ,
+ agg_math ;
+
+{ TYPES DEFINITION }
+type
+ spline_ctrl_impl = object(ctrl )
+ m_num_pnt : unsigned;
+
+ m_xp ,
+ m_yp : array[0..31 ] of double;
+
+ m_spline : bspline;
+
+ m_spline_values : array[0..255 ] of double;
+ m_spline_values8 : array[0..255 ] of int8u;
+ m_border_width ,
+ m_border_extra ,
+ m_curve_width ,
+ m_point_size ,
+
+ m_xs1 ,
+ m_ys1 ,
+ m_xs2 ,
+ m_ys2 : double;
+
+ m_curve_pnt : path_storage;
+ m_curve_poly : conv_stroke;
+ m_ellipse : ellipse;
+
+ m_idx ,
+ m_vertex : unsigned;
+
+ m_vx ,
+ m_vy : array[0..31 ] of double;
+
+ m_active_pnt ,
+ m_move_pnt : int;
+
+ m_pdx ,
+ m_pdy : double;
+
+ constructor Construct(x1 ,y1 ,x2 ,y2 : double; num_pnt : unsigned; flip_y : boolean = false );
+ destructor Destruct; virtual;
+
+ // Set other parameters
+ procedure border_width_(t : double; extra : double = 0.0 );
+ procedure curve_width_ (t : double );
+ procedure point_size_ (s : double );
+
+ // Event handlers. Just call them if the respective events
+ // in your system occure. The functions return true if redrawing
+ // is required.
+ 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;
+
+ // Spline
+ procedure active_point_(i : int );
+
+ function _spline : double_ptr;
+ function _spline8 : int8u_ptr;
+
+ function _value(x : double ) : double;
+ procedure value_(idx : unsigned; y : double );
+ procedure point_(idx : unsigned; x ,y : double );
+
+ procedure x_(idx : unsigned; x : double );
+ procedure y_(idx : unsigned; y : double );
+ function _x(idx : unsigned ) : double;
+ function _y(idx : unsigned ) : double;
+
+ procedure update_spline;
+
+ // Vertex soutce interface
+ function num_paths : unsigned; virtual;
+ procedure rewind(path_id : unsigned ); virtual;
+ function vertex(x ,y : double_ptr ) : unsigned; virtual;
+
+ // Private
+ procedure calc_spline_box;
+ procedure calc_curve;
+ function calc_xp(idx : unsigned ) : double;
+ function calc_yp(idx : unsigned ) : double;
+ procedure set_xp (idx : unsigned; val : double );
+ procedure set_yp (idx : unsigned; val : double );
+
+ end;
+
+ spline_ctrl = object(spline_ctrl_impl )
+ m_background_color ,
+ m_border_color ,
+ m_curve_color ,
+ m_inactive_pnt_color ,
+ m_active_pnt_color : aggclr;
+
+ m_colors : array[0..4 ] of aggclr_ptr;
+
+ constructor Construct(x1 ,y1 ,x2 ,y2 : double; num_pnt : unsigned; flip_y : boolean = false );
+
+ procedure background_color_ (c : aggclr_ptr );
+ procedure border_color_ (c : aggclr_ptr );
+ procedure curve_color_ (c : aggclr_ptr );
+ procedure inactive_pnt_color_(c : aggclr_ptr );
+ procedure active_pnt_color_ (c : aggclr_ptr );
+
+ function _color(i : unsigned ) : aggclr_ptr; virtual;
+
+ end;
+
+{ GLOBAL PROCEDURES }
+
+
+IMPLEMENTATION
+{ LOCAL VARIABLES & CONSTANTS }
+{ UNIT IMPLEMENTATION }
+{ CONSTRUCT }
+constructor spline_ctrl_impl.Construct;
+var
+ i : unsigned;
+
+begin
+ inherited Construct(x1 ,y1 ,x2 ,y2 ,flip_y );
+
+ m_num_pnt:=num_pnt;
+
+ m_border_width:=1.0;
+ m_border_extra:=0.0;
+ m_curve_width :=1.0;
+ m_point_size :=3.0;
+
+ m_spline.Construct;
+ m_curve_pnt.Construct;
+ m_curve_poly.Construct(@m_curve_pnt );
+ m_ellipse.Construct;
+
+ m_idx :=0;
+ m_vertex :=0;
+ m_active_pnt:=-1;
+ m_move_pnt :=-1;
+
+ m_pdx:=0.0;
+ m_pdy:=0.0;
+
+ if m_num_pnt < 4 then
+ m_num_pnt:=4;
+
+ if m_num_pnt > 32 then
+ m_num_pnt:=32;
+
+ for i:=0 to m_num_pnt - 1 do
+ begin
+ m_xp[i ]:=i / (m_num_pnt - 1 );
+ m_yp[i ]:=0.5;
+
+ end;
+
+ calc_spline_box;
+ update_spline;
+
+end;
+
+{ DESTRUCT }
+destructor spline_ctrl_impl.Destruct;
+begin
+ m_spline.Destruct;
+ m_curve_pnt.Destruct;
+ m_curve_poly.Destruct;
+
+end;
+
+{ BORDER_WIDTH_ }
+procedure spline_ctrl_impl.border_width_;
+begin
+ m_border_width:=t;
+ m_border_extra:=extra;
+
+ calc_spline_box;
+
+end;
+
+{ CURVE_WIDTH_ }
+procedure spline_ctrl_impl.curve_width_;
+begin
+ m_curve_width:=t;
+
+end;
+
+{ POINT_SIZE_ }
+procedure spline_ctrl_impl.point_size_;
+begin
+ m_point_size:=s;
+
+end;
+
+{ IN_RECT }
+function spline_ctrl_impl.in_rect;
+begin
+ inverse_transform_xy(@x ,@y );
+
+ result:=
+ (x >= m_x1 ) and
+ (x <= m_x2 ) and
+ (y >= m_y1 ) and
+ (y <= m_y2 );
+
+end;
+
+{ ON_MOUSE_BUTTON_DOWN }
+function spline_ctrl_impl.on_mouse_button_down;
+var
+ i : unsigned;
+
+ xp ,yp : double;
+
+begin
+ inverse_transform_xy(@x ,@y );
+
+ for i:=0 to m_num_pnt - 1 do
+ begin
+ xp:=calc_xp(i );
+ yp:=calc_yp(i );
+
+ if calc_distance(x ,y ,xp ,yp ) <= m_point_size + 1 then
+ begin
+ m_pdx:=xp - x;
+ m_pdy:=yp - y;
+
+ m_active_pnt:=i;
+ m_move_pnt :=i;
+
+ result:=true;
+
+ exit;
+
+ end;
+
+ end;
+
+ result:=false;
+
+end;
+
+{ ON_MOUSE_BUTTON_UP }
+function spline_ctrl_impl.on_mouse_button_up;
+begin
+ if m_move_pnt >= 0 then
+ begin
+ m_move_pnt:=-1;
+
+ result:=true;
+
+ end
+ else
+ result:=false;
+
+end;
+
+{ ON_MOUSE_MOVE }
+function spline_ctrl_impl.on_mouse_move;
+var
+ xp ,yp : double;
+
+begin
+ inverse_transform_xy(@x ,@y );
+
+ if not button_flag then
+ begin
+ result:=on_mouse_button_up(x ,y );
+
+ exit;
+
+ end;
+
+ if m_move_pnt >= 0 then
+ begin
+ xp:=x + m_pdx;
+ yp:=y + m_pdy;
+
+ set_xp(m_move_pnt ,(xp - m_xs1 ) / (m_xs2 - m_xs1 ) );
+ set_yp(m_move_pnt ,(yp - m_ys1 ) / (m_ys2 - m_ys1 ) );
+
+ update_spline;
+
+ result:=true;
+
+ end
+ else
+ result:=false;
+
+end;
+
+{ ON_ARROW_KEYS }
+function spline_ctrl_impl.on_arrow_keys;
+var
+ kx ,ky : double;
+
+ ret : boolean;
+
+begin
+ kx :=0.0;
+ ky :=0.0;
+ ret:=false;
+
+ if m_active_pnt >= 0 then
+ begin
+ kx:=m_xp[m_active_pnt ];
+ ky:=m_yp[m_active_pnt ];
+
+ if left then
+ begin
+ kx :=kx - 0.001;
+ ret:=true;
+
+ end;
+
+ if right then
+ begin
+ kx :=kx + 0.001;
+ ret:=true;
+
+ end;
+
+ if down then
+ begin
+ ky :=ky - 0.001;
+ ret:=true;
+
+ end;
+
+ if up then
+ begin
+ ky :=ky + 0.001;
+ ret:=true;
+
+ end;
+
+ end;
+
+ if ret then
+ begin
+ set_xp(m_active_pnt ,kx );
+ set_yp(m_active_pnt ,ky );
+
+ update_spline;
+
+ end;
+
+ result:=ret;
+
+end;
+
+{ ACTIVE_POINT_ }
+procedure spline_ctrl_impl.active_point_;
+begin
+ m_active_pnt:=i;
+
+end;
+
+{ _SPLINE }
+function spline_ctrl_impl._spline;
+begin
+ result:=@m_spline_values;
+
+end;
+
+{ _SPLINE8 }
+function spline_ctrl_impl._spline8;
+begin
+ result:=@m_spline_values8;
+
+end;
+
+{ _VALUE }
+function spline_ctrl_impl._value;
+begin
+ x:=m_spline.get(x );
+
+ if x < 0.0 then
+ x:=0.0;
+
+ if x > 1.0 then
+ x:=1.0;
+
+ result:=x;
+
+end;
+
+{ VALUE_ }
+procedure spline_ctrl_impl.value_;
+begin
+ if idx < m_num_pnt then
+ set_yp(idx ,y );
+
+end;
+
+{ POINT_ }
+procedure spline_ctrl_impl.point_;
+begin
+ if idx < m_num_pnt then
+ begin
+ set_xp(idx ,x );
+ set_yp(idx ,y );
+
+ end;
+
+end;
+
+{ X_ }
+procedure spline_ctrl_impl.x_;
+begin
+ m_xp[idx ]:=x;
+
+end;
+
+{ Y_ }
+procedure spline_ctrl_impl.y_;
+begin
+ m_yp[idx ]:=y;
+
+end;
+
+{ _X }
+function spline_ctrl_impl._x;
+begin
+ result:=m_xp[idx ];
+
+end;
+
+{ _Y }
+function spline_ctrl_impl._y;
+begin
+ result:=m_yp[idx ];
+
+end;
+
+{ UPDATE_SPLINE }
+procedure spline_ctrl_impl.update_spline;
+var
+ i : int;
+
+begin
+ m_spline.init(m_num_pnt ,@m_xp ,@m_yp );
+
+ for i:=0 to 255 do
+ begin
+ m_spline_values[i ]:=m_spline.get(i / 255.0 );
+
+ if m_spline_values[i ] < 0.0 then
+ m_spline_values[i ]:=0.0;
+
+ if m_spline_values[i ] > 1.0 then
+ m_spline_values[i ]:=1.0;
+
+ m_spline_values8[i ]:=int8u(trunc(m_spline_values[i ] * 255.0 ) );
+
+ end;
+
+end;
+
+{ NUM_PATHS }
+function spline_ctrl_impl.num_paths;
+begin
+ result:=5;
+
+end;
+
+{ REWIND }
+procedure spline_ctrl_impl.rewind;
+var
+ i : unsigned;
+
+begin
+ m_idx:=path_id;
+
+ case path_id of
+ 0 : // Background
+ begin
+ m_vertex:=0;
+
+ m_vx[0 ]:=m_x1 - m_border_extra;
+ m_vy[0 ]:=m_y1 - m_border_extra;
+ m_vx[1 ]:=m_x2 + m_border_extra;
+ m_vy[1 ]:=m_y1 - m_border_extra;
+ m_vx[2 ]:=m_x2 + m_border_extra;
+ m_vy[2 ]:=m_y2 + m_border_extra;
+ m_vx[3 ]:=m_x1 - m_border_extra;
+ m_vy[3 ]:=m_y2 + m_border_extra;
+
+ end;
+
+ 1 : // Border
+ begin
+ m_vertex:=0;
+
+ m_vx[0 ]:=m_x1;
+ m_vy[0 ]:=m_y1;
+ m_vx[1 ]:=m_x2;
+ m_vy[1 ]:=m_y1;
+ m_vx[2 ]:=m_x2;
+ m_vy[2 ]:=m_y2;
+ m_vx[3 ]:=m_x1;
+ m_vy[3 ]:=m_y2;
+ m_vx[4 ]:=m_x1 + m_border_width;
+ m_vy[4 ]:=m_y1 + m_border_width;
+ m_vx[5 ]:=m_x1 + m_border_width;
+ m_vy[5 ]:=m_y2 - m_border_width;
+ m_vx[6 ]:=m_x2 - m_border_width;
+ m_vy[6 ]:=m_y2 - m_border_width;
+ m_vx[7 ]:=m_x2 - m_border_width;
+ m_vy[7 ]:=m_y1 + m_border_width;
+
+ end;
+
+ 2 : // Curve
+ begin
+ calc_curve;
+
+ m_curve_poly.width_(m_curve_width );
+ m_curve_poly.rewind(0 );
+
+ end;
+
+ 3 : // Inactive points
+ begin
+ m_curve_pnt.remove_all;
+
+ for i:=0 to m_num_pnt - 1 do
+ if i <> m_active_pnt then
+ begin
+ m_ellipse.init(
+ calc_xp(i ) ,calc_yp(i ) ,
+ m_point_size ,m_point_size ,32 );
+
+ m_curve_pnt.add_path(@m_ellipse ,0 ,false );
+
+ end;
+
+ m_curve_poly.rewind(0 );
+
+ end;
+
+ 4 : // Active point
+ begin
+ m_curve_pnt.remove_all;
+
+ if m_active_pnt >= 0 then
+ begin
+ m_ellipse.init(
+ calc_xp(m_active_pnt ) ,calc_yp(m_active_pnt ) ,
+ m_point_size ,m_point_size ,32 );
+
+ m_curve_pnt.add_path(@m_ellipse );
+
+ end;
+
+ m_curve_poly.rewind(0 );
+
+ end;
+
+ end;
+
+end;
+
+{ VERTEX }
+function spline_ctrl_impl.vertex;
+var
+ cmd : unsigned;
+
+begin
+ cmd:=path_cmd_line_to;
+
+ case m_idx of
+ 0 :
+ begin
+ if m_vertex = 0 then
+ cmd:=path_cmd_move_to;
+
+ if m_vertex >= 4 then
+ cmd:=path_cmd_stop;
+
+ x^:=m_vx[m_vertex ];
+ y^:=m_vy[m_vertex ];
+
+ inc(m_vertex );
+
+ end;
+
+ 1 :
+ begin
+ if (m_vertex = 0 ) or
+ (m_vertex = 4 ) then
+ cmd:=path_cmd_move_to;
+
+ if m_vertex >= 8 then
+ cmd:=path_cmd_stop;
+
+ x^:=m_vx[m_vertex ];
+ y^:=m_vy[m_vertex ];
+
+ inc(m_vertex );
+
+ end;
+
+ 2 :
+ cmd:=m_curve_poly.vertex(x ,y );
+
+ 3 ,4 :
+ cmd:=m_curve_pnt.vertex(x ,y );
+
+ else
+ cmd:=path_cmd_stop;
+
+ end;
+
+ if not is_stop(cmd ) then
+ transform_xy(x ,y );
+
+ result:=cmd;
+
+end;
+
+{ CALC_SPLINE_BOX }
+procedure spline_ctrl_impl.calc_spline_box;
+begin
+ m_xs1:=m_x1 + m_border_width;
+ m_ys1:=m_y1 + m_border_width;
+ m_xs2:=m_x2 - m_border_width;
+ m_ys2:=m_y2 - m_border_width;
+
+end;
+
+{ CALC_CURVE }
+procedure spline_ctrl_impl.calc_curve;
+var
+ i : int;
+
+begin
+ m_curve_pnt.remove_all;
+ m_curve_pnt.move_to(m_xs1 ,m_ys1 + (m_ys2 - m_ys1 ) * m_spline_values[0 ] );
+
+ for i:=1 to 255 do
+ m_curve_pnt.line_to(
+ m_xs1 + (m_xs2 - m_xs1 ) * i / 255.0 ,
+ m_ys1 + (m_ys2 - m_ys1 ) * m_spline_values[i ] );
+
+end;
+
+{ CALC_XP }
+function spline_ctrl_impl.calc_xp;
+begin
+ result:=m_xs1 + (m_xs2 - m_xs1 ) * m_xp[idx ];
+
+end;
+
+{ CALC_YP }
+function spline_ctrl_impl.calc_yp;
+begin
+ result:=m_ys1 + (m_ys2 - m_ys1 ) * m_yp[idx ];
+
+end;
+
+{ SET_XP }
+procedure spline_ctrl_impl.set_xp;
+begin
+ if val < 0.0 then
+ val:=0.0;
+
+ if val > 1.0 then
+ val:=1.0;
+
+ if idx = 0 then
+ val:=0.0
+ else
+ if idx = m_num_pnt - 1 then
+ val:=1.0
+ else
+ begin
+ if val < m_xp[idx - 1 ] + 0.001 then
+ val:=m_xp[idx - 1 ] + 0.001;
+
+ if val > m_xp[idx + 1 ] - 0.001 then
+ val:=m_xp[idx + 1 ] - 0.001;
+
+ end;
+
+ m_xp[idx ]:=val;
+
+end;
+
+{ SET_YP }
+procedure spline_ctrl_impl.set_yp;
+begin
+ if val < 0.0 then
+ val:=0.0;
+
+ if val > 1.0 then
+ val:=1.0;
+
+ m_yp[idx ]:=val;
+
+end;
+
+{ CONSTRUCT }
+constructor spline_ctrl.Construct;
+begin
+ inherited Construct(x1 ,y1 ,x2 ,y2 ,num_pnt ,flip_y );
+
+ m_background_color.ConstrDbl (1.0 ,1.0 ,0.9 );
+ m_border_color.ConstrDbl (0.0 ,0.0 ,0.0 );
+ m_curve_color.ConstrDbl (0.0 ,0.0 ,0.0 );
+ m_inactive_pnt_color.ConstrDbl(0.0 ,0.0 ,0.0 );
+ m_active_pnt_color.ConstrDbl (1.0 ,0.0 ,0.0 );
+
+ m_colors[0 ]:=@m_background_color;
+ m_colors[1 ]:=@m_border_color;
+ m_colors[2 ]:=@m_curve_color;
+ m_colors[3 ]:=@m_inactive_pnt_color;
+ m_colors[4 ]:=@m_active_pnt_color;
+
+end;
+
+{ BACKGROUND_COLOR_ }
+procedure spline_ctrl.background_color_;
+begin
+ m_background_color:=c^;
+
+end;
+
+{ BORDER_COLOR_ }
+procedure spline_ctrl.border_color_;
+begin
+ m_border_color:=c^;
+
+end;
+
+{ CURVE_COLOR_ }
+procedure spline_ctrl.curve_color_;
+begin
+ m_curve_color:=c^;
+
+end;
+
+{ INACTIVE_PNT_COLOR_ }
+procedure spline_ctrl.inactive_pnt_color_;
+begin
+ m_inactive_pnt_color:=c^;
+
+end;
+
+{ ACTIVE_PNT_COLOR_ }
+procedure spline_ctrl.active_pnt_color_;
+begin
+ m_active_pnt_color:=c^;
+
+end;
+
+{ _COLOR }
+function spline_ctrl._color;
+begin
+ result:=m_colors[i ];
+
+end;
+
+END.
+
generated by cgit v1.2.3-54-g00ecf (git 2.44.0) at 2024-07-07 10:23:36 +0000