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DrawLines.pas
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{+------------------------------------------------------------------------+
| AutoREALM. Copyright (c) 2000, Andrew J. Gryc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or (at |
| your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| For a copy of the GNU General Public License, write to the Free |
| Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. |
+------------------------------------------------------------------------+}
unit DrawLines;
interface
uses SysUtils, Classes, Graphics, Geometry, Logging;
{ Windows }
type
TFullStyle = Packed Record
Bits : Cardinal;
Thickness : Coord;
SThickness : Coord; // Never saved to disk: calculated on the fly
End;
// StyleAttrib = line style. We use four sections at a byte a piece to
// specify the style of the Line, the Fill style (if it is closed),
// and the styles of the line tips on either end.
StyleAttrib = packed record
case Integer of
0: (Line,Fill,First,Last:byte);
1: (Bits:Cardinal);
2: (FullStyle : TFullStyle);
end;
// Structure used for drawing lines. One of these must be filled out
// before drawing the line by calling GetLineStyleStart.
TLineContinue=record
Canvas:TCanvas;
Style:StyleAttrib;
Points:PCoordArray;
Count:integer;
Allocated:integer;
Bitmask:integer;
First:boolean;
p1,p2:CoordPoint;
dx,dy:integer;
Start,Width:integer;
Slice,NumSlices:integer;
NoPutPixel:boolean;
InvertLine:integer; // 1 if normal, -1 if inverted
end;
procedure Marquis(Canvas:TCanvas; x1,y1,x2,y2:integer);
procedure GetFractalBox(x1,y1,x2,y2:coord; rfact:double; var b:CoordRect);
procedure FractalLine(Canvas:TCanvas; x1,y1,x2,y2:coord; rfact:double; var continue:TLineContinue);
procedure FractalSetSeed(n:integer);
function GetNumberLineStyles:integer;
function GetNumberLineEndStyles:integer;
function GetLineStyleStart(style:StyleAttrib):TLineContinue;
procedure DrawLineContinue(Canvas:TCanvas; x1,y1,x2,y2:Coord; var continue:TLineContinue);
function GetLineEnd(var continue:TLineContinue; var count:integer):PCoordArray;
procedure DrawLineStyle(Canvas:TCanvas; x1,y1,x2,y2:integer; style:StyleAttrib);
procedure DrawBezier(Canvas:TCanvas; p1,p2,p3,p4:CoordPoint; var continue:TLineContinue);
procedure DrawFractalBezier(Canvas:TCanvas; p1,p2,p3,p4:CoordPoint; rfact:double; var continue:TLineContinue);
procedure DrawArc(Canvas: TCanvas; P1,P2,P3: CoordPoint; Var Continue: TLineContinue);
Procedure GetArcCenter(P1,P2,P3: CoordPoint; Var X1,Y1: Single);
procedure GetBezierBox(p1,p2,p3,p4:CoordPoint; var b:CoordRect);
procedure GetFractalBezierBox(p1,p2,p3,p4:CoordPoint; rfact:double; var b:CoordRect);
function GetLineThickness(style:StyleAttrib):integer;
function IsAComplexLine(style:StyleAttrib):boolean;
function FixedRandom(n:integer):integer; // JD 9-11-02
function InvertLineStyle(style:StyleAttrib):StyleAttrib; // AJG 1-29-03
function IsLineStyleInverted(style:StyleAttrib):boolean; // AJG 1-29-03
// This special style indicates that we should just segment the line and
// return an array of the actual segments being drawn (used in decompose
// and related operations).
const
// SEGMENT_STYLE:StyleAttrib=(Bits:$FFFFFFFF);
SEGMENT_STYLE: StyleAttrib = (FullStyle:(Bits:$FFFFFFFF; Thickness:-1; SThickness:0));
MaxRand=256*1024; // JD 9-11-02
// Lines styles are all hardcoded: these are the number of each type.
//
// NOTE: If you want to add lines, you must create a new group and
// add those lines to the end. If you don't do this, you'll end up
// making your files incompatible with other AutoREALM users. Sorry.
number_thick_styles = 6;
number_dithered_styles = 9;
number_glyph_styles = 41;
number_caligraphy_styles = 12;
number_random_styles = 60;
number_numeric_thickness_styles = 1;
number_lineends = 20;
// start of each style type in the total list.
start_thick_style = 1;
start_dithered_style = start_thick_style + number_thick_styles;
start_glyph_style = start_dithered_style + number_dithered_styles;
start_caligraphy_style = start_glyph_style + number_glyph_styles;
start_random_style = start_caligraphy_style + number_caligraphy_styles;
start_numeric_thickness_style = start_random_style + number_random_styles;
implementation
uses Main,Printers,Math;
type GlyphData=record // Constant data struct for glyph line styles
Width,Count,Start:integer;
end;
EndPointData=record // Constant data struct for line tips
Width,Count,Start,Depth:integer;
end;
RandomData=record // Constant data struct for specifying random lines
PatternWidth,DotCount,DotWidth,DotType:integer;
end;
const
AllocationGrowth = 200; // How large we grow SEGMENT_STYLE allocations at a gulp
fractal_depth = 16; // number times we recurse the fractals for bounding box computations
dashdot:array [0 .. number_dithered_styles-1] of Cardinal=(
$55555555, // .O.O-X-X.O.O-X-X.O.O-X-X.O.O-X-X
$FFC3C3FF, // OOOOXXXXOO..--XXOO..--XXOOOOXXXX
$FF1E3CFF, // OOOOXXXX...OXXX-..OOXX--OOOOXXXX
$FFF3FFF3, // OOOOXXXXOOOO--XXOOOOXXXXOOOO--XX
$F99F33CC, // OOOOX--XO..OXXXX..OO--XXOO..XX--
$0F0F0F0F, // ....XXXX....XXXX....XXXX....XXXX
$11111111, // ...O---X...O---X...O---X...O---X
$10101010, // ...O----...O----...O----...O----
$FFFFF924 // OOOOXXXXOOOOXXXXOOOOX--X..O.-X--
);
GlyphBits:array[0..530] of Cardinal= (
{0} $10, // ---X----
$20, // --X-----
$40, // -X------
$20, // --X-----
$10, // ---X----
$08, // ----X---
$04, // -----X--
$08, // ----X---
{8} $42, // -X----X-
{9} $24, // --X--X--
{10} $14, // ---X-X--
{11} $18, // ---XX---
$3C, // --XXXX--
$18, // ---XX---
$00, // --------
{15} $FF, // XXXXXXXX
$00, // --------
{17} $FF, // XXXXXXXX
$00, // --------
$00, // --------
$00, // --------
{21} $10, // ---X----
$10, // ---X----
$10, // ---X----
$FE, // XXXXXXX-
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
{30} $0420, // ----.X..--X-....
$0420, // ----.X..--X-....
$0420, // ----.X..--X-....
$3FFC, // --XXXXXXXXXXXX..
$0420, // ----.X..--X-....
$0420, // ----.X..--X-....
$0420, // ----.X..--X-....
$0420, // ----.X..--X-....
$0420, // ----.X..--X-....
{39} $3C, // --XXXX--
$00, // --------
{41} $3C, // --XXXX--
$00, // --------
$00, // --------
$00, // --------
{45} $14, // ---X-X--
$14, // ---X-X--
$14, // ---X-X--
$14, // ---X-X--
$00, // --------
$00, // --------
{51} $10, // ---X----
$10, // ---X----
$10, // ---X----
$FE, // XXXXXXX-
$10, // ---X----
$10, // ---X----
$10, // ---X----
$00, // --------
$00, // --------
{60} $10, // ---X----
$10, // ---X----
$10, // ---X----
$1E, // ---XXXX-
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$F0, // XXXX----
$10, // ---X----
$10, // ---X----
{72} $10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$1E, // ---XXXX-
$10, // ---X----
$1E, // ---XXXX-
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$F0, // XXXX----
$10, // ---X----
$F0, // XXXX----
{86} $00, // --------
$10, // ---X----
$10, // ---X----
$1E, // ---XXXX-
$10, // ---X----
$10, // ---X----
$00, // --------
$10, // ---X----
$10, // ---X----
$F0, // XXXX----
$10, // ---X----
$10, // ---X----
{98} $0B80, // ----X.XXX---....
$0580, // ----.X.XX---....
{100} $2B80, // --X-X.XXX---....
$5580, // -X-X.X.XX---....
{102} $10090000, // ---X....----X..X----....----....
$00090000, // ----....----X..X----....----....
$02490000, // ----..X.-X--X..X----....----....
$00410000, // ----....-X--...X----....----....
$10090000, // ---X....----X..X----....----....
$02090000, // ----..X.----X..X----....----....
$00490000, // ----....-X--X..X----....----....
$82410000, // X---..X.-X--...X----....----....
$00090000, // ----....----X..X----....----....
{111} $12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
$12490000, // ---X..X.-X--X..X----....----....
{120} $00, // --------
$10, // ---X----
$10, // ---X----
$7C, // -XXXXX--
$10, // ---X----
$10, // ---X----
$00, // --------
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
{132} $00, // --------
$38, // --XXX---
$44, // -X---X--
$44, // -X---X--
$44, // -X---X--
$38, // --XXX---
$00, // --------
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
{144} $38, // --XXX---
$44, // -X---X--
$44, // -X---X--
$44, // -X---X--
$38, // --XXX---
$00, // --------
{150} $10, // ---X----
$10, // ---X----
$10, // ---X----
$38, // --XXX---
$7C, // -XXXXX--
$38, // --XXX---
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
{160} $00, // --------
$10, // ---X----
$10, // ---X----
$38, // --XXX---
$7C, // -XXXXX--
$38, // --XXX---
$10, // ---X----
$10, // ---X----
$00, // --------
$00, // --------
{170} $7E, // -XXXXXX-
$42, // -X----X-
$42, // -X----X-
$42, // -X----X-
$42, // -X----X-
$42, // -X----X-
{176} $10, // ---X----
$10, // ---X----
$10, // ---X----
$7C, // -XXXXX--
$7C, // -XXXXX--
$7C, // -XXXXX--
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
{186} $10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
$FE, // XXXXXXX-
$7C, // -XXXXX--
$38, // --XXX---
$10, // ---X----
$00, // --------
$00, // --------
{196} $7E, // -XXXXXX-
$02, // ------X-
$02, // ------X-
$02, // ------X-
$7E, // -XXXXXX-
$40, // -X------
$40, // -X------
$40, // -X------
{204} $FE, // XXXXXXX-
$12, // ---X--X-
$12, // ---X--X-
$12, // ---X--X-
$FE, // XXXXXXX-
$90, // X--X----
$90, // X--X----
$90, // X--X----
{212} $00, // --------
$38, // --XXX---
$7C, // -XXXXX--
$38, // --XXX---
$00, // --------
$10, // ---X----
$00, // --------
$10, // ---X----
$00, // --------
$10, // ---X----
$00, // --------
$10, // ---X----
$00, // --------
$10, // ---X----
$00, // --------
$10, // ---X----
$00, // --------
$10, // ---X----
$00, // --------
$10, // ---X----
$00, // --------
{233} $FF, // XXXXXXXX
$01, // -------X
$01, // -------X
$07, // -----XXX
$01, // -------X
$01, // -------X
$1F, // ---XXXXX
$01, // -------X
$01, // -------X
$07, // -----XXX
$01, // -------X
$01, // -------X
$7F, // -XXXXXXX
$01, // -------X
$01, // -------X
$07, // -----XXX
$01, // -------X
$01, // -------X
$1F, // ---XXXXX
$01, // -------X
$01, // -------X
$07, // -----XXX
$01, // -------X
$01, // -------X
{257} $1F, // ---XXXXX
$10, // ---X----
$10, // ---X----
$10, // ---X----
$10, // ---X----
{262} $00, // --------
$00, // --------
$10, // ---X----
$10, // ---X----
$1F, // ---XXXXX
$10, // ---X----
$10, // ---X----
$00, // --------
$00, // --------
{271} $00000C00, // ----....----....----OO..----....
$0000DC00, // ----....----....XX-XOO..----....
$000DFC00, // ----....----OO.OXXXXOO..----....
$001FFC00, // ----....---XOOOOXXXXOO..----....
$007FFC00, // ----....-XXXOOOOXXXXOO..----....
$01FFFFC0, // ----...OXXXXOOOOXXXXOOOOXX--....
$007FFC00, // ----....-XXXOOOOXXXXOO..----....
$001FFC00, // ----....---XOOOOXXXXOO..----....
$000DFC00, // ----....----OO.OXXXXOO..----....
$0000DC00, // ----....----....XX-XOO..----....
$00000C00, // ----....----....----OO..----....
$00000000, // ----....----....----....----....
$00000000, // ----....----....----....----....
$00000000, // ----....----....----....----....
$00000000, // ----....----....----....----....
{286} $3C, // --XXXX--
$24, // --X--X--
$24, // --X--X--
$24, // --X--X--
$24, // --X--X--
$24, // --X--X--
$24, // --X--X--
$24, // --X--X--
$24, // --X--X--
$3C, // --XXXX--
$3C, // --XXXX--
$3C, // --XXXX--
$3C, // --XXXX--
$3C, // --XXXX--
$3C, // --XXXX--
$3C, // --XXXX--
$3C, // --XXXX--
$3C, // --XXXX--
{304} $FE, // XXXXXXX-
$92, // X--X--X-
$92, // X--X--X-
$92, // X--X--X-
$92, // X--X--X-
$92, // X--X--X-
$92, // X--X--X-
$92, // X--X--X-
$92, // X--X--X-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
$EE, // XXX-XXX-
{322} $92, // X--X--X-
{323} $000C0000, // ----....----XX..----....----....
$00070000, // ----....----.XXX----....----....
$0001C000, // ----....----...XXX--....----....
$00007000, // ----....----....-XXX....----....
$00001C00, // ----....----....---XXX..----....
$00007000, // ----....----....-XXX....----....
$0063C000, // ----....-XX-..XXXX--....----....
$00300000, // ----....--XX....----....----....
$000E0000, // ----....----XXX.----....----....
$00038000, // ----....----..XXX---....----....
$00070000, // ----....----.XXX----....----....
$001C1000, // ----....---XXX..---X....----....
$00701800, // ----....-XXX....---XX...----....
$00C00C00, // ----....XX--....----XX..----....
$00060600, // ----....----.XX.----.XX.----....
$00038700, // ----....----..XXX---.XXX----....
$0000DC00, // ----....----....XX-XXX..----....
$00007000, // ----....----....-XXX....----....
$00060000, // ----....----.XX.----....----....
$03030000, // ----..XX----..XX----....----....
$01838000, // ----...XX---..XXX---....----....
$00CE0000, // ----....XX--XXX.----....----....
$00387000, // ----....--XXX...-XXX....----....
$0003D800, // ----....----..XXXX-XX...----....
$000E0C00, // ----....----XXX.----XX..----....
$00180600, // ----....---XX...----.XX.----....
$00000700, // ----....----....----.XXX----....
$00001C00, // ----....----....---XXX..----....
$00003000, // ----....----....--XX....----....
$00001800, // ----....----....---XX...----....
$00070C00, // ----....----XXX.----XX..----....
$00039800, // ----....----..XXX--XX...----....
$0000F000, // ----....----....XXXX....----....
$00000000, // ----....----....----....----....
$00301800, // ----....--XX....---XX...----....
$001C3000, // ----....---XXX..--XX....----....
$00076000, // ----....----.XXX-XX-....----....
$0001C000, // ----....----...XXX--....----....
$00008000, // ----....----....X---....----....
$00000000, // ----....----....----....----....
$00060000, // ----....----.XX.----....----....
$00038000, // ----....----..XXX---....----....
$0000C000, // ----....----....XX--....----....
$00007000, // ----....----....-XXX....----....
$0C001800, // ----XX..----X...---XX...----....
$063C3000, // ----.XX.--XXXX..--XX....----....
$03676000, // ----..XX-XX-.XXX-XX-....----....
$01C1C000, // ----...XXX--...XXX--....----....
$00008000, // ----....----....X---....----....
$000C0000, // ----....----XX..----....----....
$00070000, // ----....----.XXX----....----....
$00018000, // ----....----...XX---....----....
$000E0000, // ----....----XXX.----....----....
$00000000, // ----....----....----....----....
{377} $70, // -XXX....
$F0, // XXXX....
$F0, // XXXX....
$70, // -XXX....
$F0, // XXXX....
{382} $0100, // ----...X----....
$0280, // ----..X.X---....
$0440, // ----.X..-X--....
$0820, // ----X...--X-....
$1010, // ---X....---X....
$2008, // --X-....----X...
{388} $0100, // ----...O----....
$0380, // ----..OOX---....
$07C0, // ----.OOOXX--....
$0FE0, // ----OOOOXXX-....
$1FF0, // ---XOOOOXXXX....
$3FF8, // --XXOOOOXXXXO...
{394} $0100, // ----...O----....
$0100, // ----...O----....
$0380, // ----..OOX---....
$0380, // ----..OOX---....
$07C0, // ----.OOOXX--....
$07C0, // ----.OOOXX--....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$1FF0, // ---XOOOOXXXX....
$1FF0, // ---XOOOOXXXX....
{404} $07C0, // ----.OOOXX......
{405} $1FF0, // ---XOOOOXXXX....
{406} $7FFC, // -XXXOOOOXXXXOO..
{407} $2008, // --X-....----O...
$1010, // ---X....---X....
$0820, // ----O...--X-....
$0440, // ----.O..-X--....
$0280, // ----..O.X---....
$0100, // ----...O----....
{413} $1010, // ---X....---X....
$0820, // ----O...--X-....
$0440, // ----.O..-X--....
$1290, // ---X..O.X--X....
$0920, // ----O..O--X-....
$0540, // ----.O.O-X--....
$1390, // ---X..OOX--X....
$0920, // ----O..O--X-....
$0540, // ----.O.O-X--....
$0380, // ----..OOX---....
{423} $8002, // X---....----..O.
$8002, // X---....----..O.
$4004, // -X--....----.O..
$3018, // --XX....---XO...
$0FE0, // ----OOOOXXX-....
{428} $0FE0, // ----OOOOXXX-....
$3018, // --XX....---XO...
$4004, // -X--....----.O..
$8002, // X---....----..O.
$8002, // X---....----..O.
{433} $0FE0, // ----OOOOXXX-....
$0820, // ----O...--X-....
$0820, // ----O...--X-....
$0820, // ----O...--X-....
$0820, // ----O...--X-....
$0820, // ----O...--X-....
$0FE0, // ----OOOOXXX-....
{440} $0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
{447} $0380, // ----..OOX---....
$0440, // ----.O..-X--....
$0820, // ----O...--X-....
$0820, // ----O...--X-....
$0820, // ----O...--X-....
$0440, // ----.O..-X--....
$0380, // ----..OOX---....
{454} $0380, // ----..OOX---....
$07C0, // ----.OOOXX--....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$07C0, // ----.OOOXX--....
$0380, // ----..OOX---....
{461} $0100, // ----...O----....
$0280, // ----..O.X---....
$0440, // ----.O..-X--....
$0820, // ----O...--X-....
$0440, // ----.O..-X--....
$0280, // ----..O.X---....
$0100, // ----...O----....
{468} $0100, // ----...O----....
$0380, // ----..OOX---....
$07C0, // ----.OOOXX--....
$0FE0, // ----OOOOXXX-....
$07C0, // ----.OOOXX--....
$0380, // ----..OOX---....
$0100, // ----...O----....
{475} $0100, // ----...O----....
$0100, // ----...O----....
$0280, // ----..O.X---....
$0280, // ----..O.X---....
$0440, // ----.O..-X--....
$0440, // ----.O..-X--....
$0820, // ----O...--X-....
$0820, // ----O...--X-....
$1010, // ---X....---X....
$1010, // ---X....---X....
{485} $1FF0, // ---XOOOOXXXX....
$1FF0, // ---XOOOOXXXX....
$0FE0, // ----OOOOXXX-....
$0FE0, // ----OOOOXXX-....
$07C0, // ----.OOOXX--....
$07C0, // ----.OOOXX--....
$0380, // ----..OOX---....
$0380, // ----..OOX---....
$0100, // ----...O----....
$0100, // ----...O----....
{495} $3FF8, // --XXOOOOXXXXO...
$1FF0, // ---XOOOOXXXX....
$0FE0, // ----OOOOXXX-....
$07C0, // ----.OOOXX--....
$0380, // ----..OOX---....
$0100, // ----...O----....
{501} $00070000, // ----....----.OOO----....----....
$00180000, // ----....---XO...----....----....
$00600000, // ----....-XX-....----....----....
$008E0000, // ----....X---OOO.----....----....
$00F10000, // ----....XXXX...O----....----....
$00060000, // ----....----.OO.----....----....
$02380000, // ----..O.--XXO...----....----....
$038E0000, // ----..OOX---OOO.----....----....
$02710000, // ----..O.-XXX...O----....----....
$010F0000, // ----...O----OOOO----....----....
$00C00000, // ----....XX--....----....----....
$00300000, // ----....--XX....----....----....
$000E0000, // ----....----OOO.----....----....
$00010000, // ----....----...O----....----....
$00070000, // ----....----.OOO----....----....
$00180000, // ----....---XO...----....----....
$001E0000, // ----....---XOOO.----....----....
$06010000, // ----.OO.----...O----....----....
$058E0000, // ----.O.OX---OOO.----....----....
$04700000, // ----.O..-XXX....----....----....
$02000000, // ----..O.----....----....----....
$01C00000, // ----...OXX--....----....----....
$03380000, // ----..OO--XXO...----....----....
$0C040000, // ----OO..----.O..----....----....
$09C00000, // ----O..OXX--....----....----....
$06300000, // ----.OO.--XX....----....----....
$001C0000, // ----....---XOO..----....----....
$00600000, // ----....-XX-....----....----....
$00860000, // ----....X---.OO.----....----....
$00F90000 // ----....XXXXO..O----....----....
{531}
);
LineEnds:array[0..number_lineends-1] of EndPointData = (
(Width:0; Count:0; Start:0; Depth:0), // No ending
(Width:16; Count:6; Start:382; Depth:0), // Hollow arrow
(Width:16; Count:6; Start:388; Depth:0), // Filled arrow
(Width:16; Count:10; Start:475; Depth:0), // Narrow Hollow arrow
(Width:16; Count:10; Start:394; Depth:0), // Narrow Filled arrow
(Width:16; Count:10; Start:413; Depth:3), // Arrow shaft
(Width:16; Count:6; Start:407; Depth:5), // Backwards angle
(Width:16; Count:6; Start:495; Depth:0), // Backwards Filled arrow
(Width:16; Count:10; Start:485; Depth:0), // Backwards Narrow Filled arrow
(Width:16; Count:1; Start:404; Depth:0), // Narrow Beam
(Width:16; Count:1; Start:405; Depth:0), // Med Beam
(Width:16; Count:1; Start:406; Depth:0), // Wide Beam
(Width:16; Count:5; Start:423; Depth:4), // Cup
(Width:16; Count:5; Start:428; Depth:0), // Inverted Cup
(Width:16; Count:7; Start:433; Depth:3), // Hollow Box
(Width:16; Count:7; Start:440; Depth:3), // Filled Box
(Width:16; Count:7; Start:447; Depth:3), // Hollow Circle
(Width:16; Count:7; Start:454; Depth:3), // Filled Circle
(Width:16; Count:7; Start:461; Depth:3), // Hollow Diamond
(Width:16; Count:7; Start:468; Depth:3) // Filled Diamond
);
Glyph:array[0..number_glyph_styles-1] of GlyphData = (
(Width:8; Count:1; Start:8), // Wide double line
(Width:8; Count:1; Start:10), // Thin double line
(Width:8; Count:6; Start:45), // Dashed double line
(Width:8; Count:8; Start:0), // Sawtooth
(Width:8; Count:4; Start:11), // Balls
(Width:8; Count:2; Start:15), // Hashes
(Width:8; Count:4; Start:17), // Spaced Hashes
(Width:8; Count:2; Start:39), // Thin Hashes
(Width:8; Count:4; Start:41), // Spaced Thin Hashes
(Width:8; Count:12; Start:120), // +-+-+-+-+-
(Width:8; Count:5; Start:257), // Solid "T" line
(Width:8; Count:5; Start:377), // Bark
(Width:8; Count:9; Start:262), // Dashed "T" line
(Width:8; Count:12; Start:132), // o-o-o-o-o-
(Width:8; Count:6; Start:144), // oooooooooo
(Width:8; Count:6; Start:170), // Boxes
(Width:8; Count:10; Start:176), // Box knotted line
(Width:8; Count:10; Start:186), // Triangle knotted line
(Width:8; Count:10; Start:150), // Circle knotted line
(Width:8; Count:21; Start:212), // Telephone line
(Width:8; Count:10; Start:160), // Dashed circle knotted line
(Width:8; Count:8; Start:196), // Castle wall
(Width:8; Count:8; Start:204), // Alternating boxes
(Width:8; Count:18; Start:286), // Block Road
(Width:8; Count:18; Start:304), // Double Block Road
(Width:8; Count:1; Start:9), // Hollow Road
(Width:8; Count:1; Start:322), // Double Hollow Road
(Width:8; Count:9; Start:21), // Railroad tracks
(Width:16; Count:9; Start:30), // Double Railroad tracks
(Width:8; Count:9; Start:51), // Abandoned Railroad tracks
(Width:8; Count:12; Start:60), // Narrow gauge
(Width:8; Count:14; Start:72), // Double narrow gauge
(Width:8; Count:12; Start:86), // Abandoned narrow gauge
(Width:16; Count:2; Start:98), // Thin Shaded
(Width:16; Count:2; Start:100), // Thick Shaded
(Width:32; Count:9; Start:102), // Sparse Lake Border
(Width:32; Count:9; Start:111), // Ribbon Lake Border
(Width:8; Count:24; Start:233), // Ruler
(Width:32; Count:15; Start:271), // Timberline
(Width:32; Count:54; Start:323), // Packice
(Width:32; Count:30; Start:501) // Leaves
);
RandomDot:array[0..number_random_styles-1] of RandomData = (
(PatternWidth:2; DotCount:1; DotWidth:0; DotType:0),
(PatternWidth:4; DotCount:1; DotWidth:0; DotType:0),
(PatternWidth:6; DotCount:1; DotWidth:0; DotType:0),
(PatternWidth:2; DotCount:2; DotWidth:0; DotType:0),
(PatternWidth:4; DotCount:2; DotWidth:0; DotType:0),
(PatternWidth:6; DotCount:2; DotWidth:0; DotType:0),
(PatternWidth:2; DotCount:3; DotWidth:0; DotType:0),
(PatternWidth:4; DotCount:3; DotWidth:0; DotType:0),
(PatternWidth:6; DotCount:3; DotWidth:0; DotType:0),
(PatternWidth:2; DotCount:4; DotWidth:0; DotType:0),
(PatternWidth:4; DotCount:4; DotWidth:0; DotType:0),
(PatternWidth:6; DotCount:4; DotWidth:0; DotType:0),
(PatternWidth:2; DotCount:1; DotWidth:1; DotType:1),
(PatternWidth:4; DotCount:1; DotWidth:1; DotType:1),
(PatternWidth:6; DotCount:1; DotWidth:1; DotType:1),
(PatternWidth:2; DotCount:2; DotWidth:1; DotType:1),
(PatternWidth:4; DotCount:2; DotWidth:1; DotType:1),
(PatternWidth:6; DotCount:2; DotWidth:1; DotType:1),
(PatternWidth:2; DotCount:3; DotWidth:1; DotType:1),
(PatternWidth:4; DotCount:3; DotWidth:1; DotType:1),
(PatternWidth:6; DotCount:3; DotWidth:1; DotType:1),
(PatternWidth:2; DotCount:4; DotWidth:1; DotType:1),
(PatternWidth:4; DotCount:4; DotWidth:1; DotType:1),
(PatternWidth:6; DotCount:4; DotWidth:1; DotType:1),
(PatternWidth:2; DotCount:1; DotWidth:2; DotType:1),
(PatternWidth:4; DotCount:1; DotWidth:2; DotType:1),
(PatternWidth:6; DotCount:1; DotWidth:2; DotType:1),
(PatternWidth:2; DotCount:2; DotWidth:2; DotType:1),
(PatternWidth:4; DotCount:2; DotWidth:2; DotType:1),
(PatternWidth:6; DotCount:2; DotWidth:2; DotType:1),
(PatternWidth:2; DotCount:3; DotWidth:2; DotType:1),
(PatternWidth:4; DotCount:3; DotWidth:2; DotType:1),
(PatternWidth:6; DotCount:3; DotWidth:2; DotType:1),
(PatternWidth:2; DotCount:6; DotWidth:2; DotType:1),
(PatternWidth:4; DotCount:6; DotWidth:2; DotType:1),
(PatternWidth:6; DotCount:6; DotWidth:2; DotType:1),
(PatternWidth:2; DotCount:1; DotWidth:1; DotType:2),
(PatternWidth:4; DotCount:1; DotWidth:1; DotType:2),
(PatternWidth:6; DotCount:1; DotWidth:1; DotType:2),
(PatternWidth:2; DotCount:2; DotWidth:1; DotType:2),
(PatternWidth:4; DotCount:2; DotWidth:1; DotType:2),
(PatternWidth:6; DotCount:2; DotWidth:1; DotType:2),
(PatternWidth:2; DotCount:3; DotWidth:1; DotType:2),
(PatternWidth:4; DotCount:3; DotWidth:1; DotType:2),
(PatternWidth:6; DotCount:3; DotWidth:1; DotType:2),
(PatternWidth:2; DotCount:6; DotWidth:1; DotType:2),
(PatternWidth:4; DotCount:6; DotWidth:1; DotType:2),
(PatternWidth:6; DotCount:6; DotWidth:1; DotType:2),
(PatternWidth:2; DotCount:1; DotWidth:2; DotType:2),
(PatternWidth:4; DotCount:1; DotWidth:2; DotType:2),
(PatternWidth:6; DotCount:1; DotWidth:2; DotType:2),
(PatternWidth:2; DotCount:2; DotWidth:2; DotType:2),
(PatternWidth:4; DotCount:2; DotWidth:2; DotType:2),
(PatternWidth:6; DotCount:2; DotWidth:2; DotType:2),
(PatternWidth:2; DotCount:3; DotWidth:2; DotType:2),
(PatternWidth:4; DotCount:3; DotWidth:2; DotType:2),
(PatternWidth:6; DotCount:3; DotWidth:2; DotType:2),
(PatternWidth:2; DotCount:6; DotWidth:2; DotType:2),
(PatternWidth:4; DotCount:6; DotWidth:2; DotType:2),
(PatternWidth:6; DotCount:6; DotWidth:2; DotType:2)
);
type
PTLineContinue=^TLineContinue;
var
RandTable:array [1..255] of integer; // Table of Random Numbers generated for fractals
LastSeed:integer; // Optimization: don't regen the table if our seed is the same.
//--------------------------------------------------------------------------
// Name: Marquis
//
// Purpose: Draws dashed line surrounding selected area.
//
// Notes: Caller must set the Canvas pen mode and color (usually pmNotXor
// if you want to draw the actual color you've selected into the Pen).
//--------------------------------------------------------------------------
procedure Marquis(Canvas:TCanvas; x1,y1,x2,y2:integer);
var ps:TPenStyle;
begin
ps := Canvas.Pen.Style;
Canvas.Brush.Color:=MainForm.BackgroundColor.Color;
Canvas.Pen.Style := psDash;
Canvas.MoveTo(x1,y1);
Canvas.LineTo(x2,y1);
Canvas.LineTo(x2,y2);
Canvas.LineTo(x1,y2);
Canvas.LineTo(x1,y1);
Canvas.Pen.Style := ps;
end;
//--------------------------------------------------------------------------
// Name: RndSeed
//
// Purpose: Random number generator.
//
// Notes: Used to give reliable random numbers that don't change, even if
// we get a new version of Delphi.
//--------------------------------------------------------------------------
function RndSeed(var seed:integer; max:integer):integer;
begin
RndSeed := seed mod max;
seed := (seed*261) mod 65521;
if (seed=0) then inc(seed);
end;
//--------------------------------------------------------------------------
// Name: GetNumberLineStyles
//
// Purpose: Returns total line styles available.
//
// Notes: This is essentially a fixed number since the user can't add their
// own styles. It's written as a function, because if we do let the
// user add styles, they'd have to go at the bottom of the list, and
// we'd increment our return value by the number of user styles.
//--------------------------------------------------------------------------
function GetNumberLineStyles:integer;
begin
Result := 1 + number_thick_styles + number_dithered_styles +
number_glyph_styles + number_caligraphy_styles +
number_random_styles + number_numeric_thickness_styles;
end;
//--------------------------------------------------------------------------
// Name: GetNumberLineEndStyles
//
// Purpose: Returns total line end styles available.
//
// Notes: This is essentially a fixed number since the user can't add their
// own styles. It's written as a function, because if we do let the
// user add styles, they'd have to go at the bottom of the list, and
// we'd increment our return value by the number of user styles.
//--------------------------------------------------------------------------
function GetNumberLineEndStyles:integer;
begin
Result:=number_lineends;
end;
//--------------------------------------------------------------------------
// Name: FixedRandom
//
// Purpose: Returns the nth fixed "random" number in the RandTable.
//
// Notes: After RandTable is filled with random numbers, the fractal algorithms
// use it to get predictable random numbers from the table.
// We can't use real random numbers here because the total numbers
// required changes depending on our zoom level. Since the fractals
// are generated recursively, it would mean that without doing this
// the shape of our fractal lines would change at each zoom level.
// This is unacceptable.
//--------------------------------------------------------------------------
function FixedRandom(n:integer):integer;
begin
FixedRandom:=RandTable[Low(RandTable)+n mod High(RandTable)];
end;
//--------------------------------------------------------------------------
// Name: DrawDot
//
// Purpose: Draws a dot on the canvas.
//
// Notes: If the canvas is a printer, we draw a one pixel wide line. If we
// canvas is a screen or bitmap, we set the pixel property instead
// which is much faster. We have to cheat like this on the printer
// because we otherwise wouldn't get the same image on both canvases.
//--------------------------------------------------------------------------
procedure DrawDot(ldr:PTLineContinue; x,y:integer);
begin
if ldr^.NoPutPixel then begin
// Printers and metafiles don't treat pixels the same as lines;
// they aren't overwritten by overlapping white polygons.
// So, draw all dots to the printer as lines (yuk)...
ldr^.Canvas.MoveTo(x,y);
ldr^.Canvas.LineTo(x+1,y);
end
else
ldr^.Canvas.Pixels[x,y] := ldr^.Canvas.Pen.Color;
end;
//--------------------------------------------------------------------------
// Name: DitherLineDDAProc
//
// Purpose: DDA routine called by Window's LineDDA procedure.
// Called by normal dash-dot type lines.
//
// Notes: Rotates the bitmask over by one bit each time it is called
// so the bits are sequentially applied.