1 | unit UVectorObject;
|
---|
2 |
|
---|
3 | {$mode delphi}
|
---|
4 |
|
---|
5 | interface
|
---|
6 |
|
---|
7 | uses
|
---|
8 | Classes, SysUtils, Graphics, Contnrs;
|
---|
9 |
|
---|
10 | type
|
---|
11 | TVectorGroup = class;
|
---|
12 |
|
---|
13 | { TVectorObject }
|
---|
14 |
|
---|
15 | TVectorObject = class
|
---|
16 | private
|
---|
17 | FScale: Double;
|
---|
18 | procedure SetScale(const AValue: Double); virtual;
|
---|
19 | public
|
---|
20 | Parent: TVectorGroup;
|
---|
21 | Position: TPoint;
|
---|
22 | property Scale: Double read FScale write SetScale;
|
---|
23 | function TransformX(Value: Double): Integer;
|
---|
24 | function TransformY(Value: Double): Integer;
|
---|
25 | procedure Draw; virtual;
|
---|
26 | constructor Create(Owner: TVectorGroup = nil);
|
---|
27 | end;
|
---|
28 |
|
---|
29 | { TVectorDot }
|
---|
30 |
|
---|
31 | TVectorDot = class(TVectorObject)
|
---|
32 | procedure Draw; override;
|
---|
33 | end;
|
---|
34 |
|
---|
35 | { TVectorMultiLine }
|
---|
36 |
|
---|
37 | TVectorLine = class(TVectorObject)
|
---|
38 | Points: TObjectList; // of TVectorDot
|
---|
39 | procedure Add(Position: TPoint);
|
---|
40 | procedure Draw; override;
|
---|
41 | constructor Create(Owner: TVectorGroup = nil);
|
---|
42 | destructor Destroy; override;
|
---|
43 | end;
|
---|
44 |
|
---|
45 | { TVectorRectangle }
|
---|
46 |
|
---|
47 | TVectorRectangle = class(TVectorObject)
|
---|
48 | Size: TPoint;
|
---|
49 | Brush: TBrush;
|
---|
50 | procedure Draw; override;
|
---|
51 | constructor Create(Owner: TVectorGroup = nil);
|
---|
52 | destructor Destroy; override;
|
---|
53 | end;
|
---|
54 |
|
---|
55 | { TVectorBitmap }
|
---|
56 |
|
---|
57 | TVectorBitmap = class(TVectorObject)
|
---|
58 | Bitmap: TBitmap;
|
---|
59 | procedure Draw; override;
|
---|
60 | end;
|
---|
61 |
|
---|
62 | { TVectorText }
|
---|
63 |
|
---|
64 | TVectorText = class(TVectorObject)
|
---|
65 | Font: TFont;
|
---|
66 | Text: string;
|
---|
67 | Brush: TBrush;
|
---|
68 | procedure Draw; override;
|
---|
69 | constructor Create(Owner: TVectorGroup = nil);
|
---|
70 | destructor Destroy; override;
|
---|
71 | end;
|
---|
72 |
|
---|
73 | { TVectorCanvas }
|
---|
74 |
|
---|
75 | { TVectorGroup }
|
---|
76 |
|
---|
77 | TVectorGroup = class(TVectorObject)
|
---|
78 | private
|
---|
79 | procedure SetScale(const AValue: Double); override;
|
---|
80 | public
|
---|
81 | Brush: TBrush;
|
---|
82 | Objects: TObjectList; // of TVectorObject
|
---|
83 | BitmapCanvas: TCanvas;
|
---|
84 | Pen: TPen;
|
---|
85 | Font: TFont;
|
---|
86 | constructor Create(Owner: TVectorGroup = nil);
|
---|
87 | destructor Destroy; override;
|
---|
88 | procedure Draw; override;
|
---|
89 | procedure Ellipse(x1, y1, x2, y2: Integer);
|
---|
90 | procedure MoveTo(X, Y: Integer);
|
---|
91 | procedure LineTo(X, Y: Integer);
|
---|
92 | procedure Rectangle(x1, y1, x2, y2: Integer);
|
---|
93 | procedure TextOut(X, Y: Integer; Text: string);
|
---|
94 | end;
|
---|
95 |
|
---|
96 | implementation
|
---|
97 |
|
---|
98 | { TVectorObject }
|
---|
99 |
|
---|
100 | procedure TVectorObject.SetScale(const AValue: Double);
|
---|
101 | begin
|
---|
102 | if FScale = AValue then exit;
|
---|
103 | FScale := AValue;
|
---|
104 | end;
|
---|
105 |
|
---|
106 | function TVectorObject.TransformX(Value: Double): Integer;
|
---|
107 | begin
|
---|
108 | Result := Round((Value + Position.X) * Scale);
|
---|
109 | end;
|
---|
110 |
|
---|
111 | function TVectorObject.TransformY(Value: Double): Integer;
|
---|
112 | begin
|
---|
113 | Result := Round((Value + Position.Y) * Scale);
|
---|
114 | end;
|
---|
115 |
|
---|
116 | procedure TVectorObject.Draw;
|
---|
117 | begin
|
---|
118 |
|
---|
119 | end;
|
---|
120 |
|
---|
121 | constructor TVectorObject.Create(Owner: TVectorGroup = nil);
|
---|
122 | begin
|
---|
123 | Position := Point(0, 0);
|
---|
124 | Scale := 1;
|
---|
125 | Parent := Owner;
|
---|
126 | if Assigned(Owner) then
|
---|
127 | Owner.Objects.Add(Self);
|
---|
128 | end;
|
---|
129 |
|
---|
130 | { TVectorLine }
|
---|
131 |
|
---|
132 | procedure TVectorLine.Add(Position: TPoint);
|
---|
133 | var
|
---|
134 | NewPoint: TVectorDot;
|
---|
135 | begin
|
---|
136 | NewPoint := TVectorDot.Create;
|
---|
137 | NewPoint.Position := Position;
|
---|
138 | Points.Add(NewPoint);
|
---|
139 | end;
|
---|
140 |
|
---|
141 | procedure TVectorLine.Draw;
|
---|
142 | var
|
---|
143 | I: Integer;
|
---|
144 | begin
|
---|
145 | inherited Draw;
|
---|
146 | for I := 0 to Points.Count - 1 do
|
---|
147 | begin
|
---|
148 | if I = 0 then Parent.MoveTo(TransformX(TVectorObject(Points[I]).Position.X),
|
---|
149 | TransformY(TVectorObject(Points[I]).Position.Y))
|
---|
150 | else Parent.LineTo(TransformX(TVectorObject(Points[I]).Position.X),
|
---|
151 | TransformY(TVectorObject(Points[I]).Position.Y));
|
---|
152 | end;
|
---|
153 | end;
|
---|
154 |
|
---|
155 | constructor TVectorLine.Create(Owner: TVectorGroup);
|
---|
156 | begin
|
---|
157 | inherited;
|
---|
158 | Points := TObjectList.Create;
|
---|
159 | end;
|
---|
160 |
|
---|
161 | destructor TVectorLine.Destroy;
|
---|
162 | begin
|
---|
163 | Points.Destroy;
|
---|
164 | inherited Destroy;
|
---|
165 | end;
|
---|
166 |
|
---|
167 | { TVectorDot }
|
---|
168 |
|
---|
169 | procedure TVectorDot.Draw;
|
---|
170 | begin
|
---|
171 | inherited Draw;
|
---|
172 | Parent.Ellipse(Round(Position.X - Scale / 2), Round(Position.Y - Scale / 2),
|
---|
173 | Round(Position.X + Scale / 2), Round(Position.Y + Scale / 2));
|
---|
174 | end;
|
---|
175 |
|
---|
176 | { TVectorRectangle }
|
---|
177 |
|
---|
178 | procedure TVectorRectangle.Draw;
|
---|
179 | begin
|
---|
180 | inherited Draw;
|
---|
181 | Parent.Brush.Assign(Brush);
|
---|
182 | Parent.Rectangle(TransformX(-Size.X / 2), TransformY(-Size.Y / 2),
|
---|
183 | TransformX(Size.X / 2), TransformY(Size.Y / 2));
|
---|
184 | end;
|
---|
185 |
|
---|
186 | constructor TVectorRectangle.Create;
|
---|
187 | begin
|
---|
188 | inherited;
|
---|
189 | Brush := TBrush.Create;
|
---|
190 | Size := Point(1, 1);
|
---|
191 | end;
|
---|
192 |
|
---|
193 | destructor TVectorRectangle.Destroy;
|
---|
194 | begin
|
---|
195 | Brush.Destroy;
|
---|
196 | inherited;
|
---|
197 | end;
|
---|
198 |
|
---|
199 | { TVectorGroup }
|
---|
200 |
|
---|
201 | procedure TVectorGroup.SetScale(const AValue:Double);
|
---|
202 | begin
|
---|
203 | inherited SetScale(AValue);
|
---|
204 | end;
|
---|
205 |
|
---|
206 | constructor TVectorGroup.Create(Owner: TVectorGroup = nil);
|
---|
207 | begin
|
---|
208 | inherited;
|
---|
209 | Objects := TObjectList.Create;
|
---|
210 | Brush := TBrush.Create;
|
---|
211 | Pen := TPen.Create;
|
---|
212 | Font := TFont.Create;
|
---|
213 | end;
|
---|
214 |
|
---|
215 | destructor TVectorGroup.Destroy;
|
---|
216 | var
|
---|
217 | I: Integer;
|
---|
218 | begin
|
---|
219 | Font.Destroy;
|
---|
220 | Pen.Destroy;
|
---|
221 | Brush.Destroy;
|
---|
222 | Objects.Destroy;
|
---|
223 | inherited Destroy;
|
---|
224 | end;
|
---|
225 |
|
---|
226 | procedure TVectorGroup.Draw;
|
---|
227 | var
|
---|
228 | I: Integer;
|
---|
229 | begin
|
---|
230 | for I := 0 to Objects.Count - 1 do
|
---|
231 | TVectorObject(Objects[I]).Draw;
|
---|
232 | end;
|
---|
233 |
|
---|
234 | procedure TVectorGroup.Ellipse(x1,y1,x2,y2:Integer);
|
---|
235 | begin
|
---|
236 | if Assigned(Parent) then Parent.Ellipse(TransformX(X1), TransformY(Y1),
|
---|
237 | TransformX(X2), TransformY(Y2))
|
---|
238 | else BitmapCanvas.Ellipse(TransformX(X1), TransformY(Y1),
|
---|
239 | TransformX(X2), TransformY(Y2));
|
---|
240 | end;
|
---|
241 |
|
---|
242 | procedure TVectorGroup.MoveTo(X, Y: Integer);
|
---|
243 | begin
|
---|
244 | if Assigned(Parent) then Parent.MoveTo(TransformX(X), TransformY(Y))
|
---|
245 | else BitmapCanvas.MoveTo(TransformX(X), TransformY(Y));
|
---|
246 | end;
|
---|
247 |
|
---|
248 | procedure TVectorGroup.LineTo(X, Y: Integer);
|
---|
249 | begin
|
---|
250 | if Assigned(Parent) then Parent.LineTo(TransformX(X), TransformY(Y))
|
---|
251 | else BitmapCanvas.LineTo(TransformX(X), TransformY(Y));
|
---|
252 | end;
|
---|
253 |
|
---|
254 | procedure TVectorGroup.Rectangle(x1,y1,x2,y2:Integer);
|
---|
255 | begin
|
---|
256 | if Assigned(Parent) then begin
|
---|
257 | Parent.Brush.Assign(Brush);
|
---|
258 | Parent.Rectangle(TransformX(X1), TransformY(Y1),
|
---|
259 | TransformX(X2), TransformY(Y2));
|
---|
260 | end else begin
|
---|
261 | BitmapCanvas.Brush.Assign(Brush);
|
---|
262 | BitmapCanvas.Rectangle(TransformX(X1), TransformY(Y1),
|
---|
263 | TransformX(X2), TransformY(Y2));
|
---|
264 | end;
|
---|
265 | end;
|
---|
266 |
|
---|
267 | procedure TVectorGroup.TextOut(X,Y:Integer;Text:string);
|
---|
268 | begin
|
---|
269 | if Assigned(Parent) then begin
|
---|
270 | Parent.Font.Assign(Font);
|
---|
271 | Parent.Font.Size := Round(Font.Size * Scale);
|
---|
272 | Parent.TextOut(TransformX(X), TransformY(Y), Text)
|
---|
273 | end else begin
|
---|
274 | BitmapCanvas.Font.Assign(Font);
|
---|
275 | BitmapCanvas.Font.Size := Round(Font.Size * Scale);
|
---|
276 | BitmapCanvas.TextOut(TransformX(X - BitmapCanvas.TextWidth(Text) / 2),
|
---|
277 | TransformY(Y - BitmapCanvas.TextHeight(Text) / 2), Text);
|
---|
278 | end;
|
---|
279 | end;
|
---|
280 |
|
---|
281 | { TVectorText }
|
---|
282 |
|
---|
283 | procedure TVectorText.Draw;
|
---|
284 | begin
|
---|
285 | inherited Draw;
|
---|
286 | Parent.Brush.Assign(Brush);
|
---|
287 | Parent.Font.Assign(Font);
|
---|
288 | Parent.Font.Size := Round(Font.Size * Scale);
|
---|
289 | Parent.TextOut(TransformX(0), TransformY(0), Text);
|
---|
290 | end;
|
---|
291 |
|
---|
292 | constructor TVectorText.Create(Owner:TVectorGroup);
|
---|
293 | begin
|
---|
294 | inherited;
|
---|
295 | Brush := TBrush.Create;
|
---|
296 | Font := TFont.Create;
|
---|
297 | end;
|
---|
298 |
|
---|
299 | destructor TVectorText.Destroy;
|
---|
300 | begin
|
---|
301 | Font.Destroy;
|
---|
302 | Brush.Destroy;
|
---|
303 | inherited Destroy;
|
---|
304 | end;
|
---|
305 |
|
---|
306 | { TVectorBitmap }
|
---|
307 |
|
---|
308 | procedure TVectorBitmap.Draw;
|
---|
309 | begin
|
---|
310 | inherited Draw;
|
---|
311 | end;
|
---|
312 |
|
---|
313 | end.
|
---|
314 |
|
---|