SDXFrameWork 0.12 SDXFrameWork

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Drawing.h
1 //Copyright © 2014 SDXFramework
2 //[License]GNU Affero General Public License, version 3
3 //[Contact]http://sourceforge.jp/projects/dxframework/
4 #pragma once
5 #include <Multimedia/SDX.h>
6 #include <Multimedia/Color.h>
7 #include <Multimedia/Image.h>
8 #include <Multimedia/Font.h>
9 #include <Utility/VariadicStream.h>
10 #include <Framework/Shape.h>
11 #include <Framework/Camera.h>
12
13 namespace SDX
14 {
17 class Drawing
18 {
19 private:
20 //生成、削除、コピー等を禁止
21 Drawing() = default;
22 ~Drawing() = default;
23 void operator =(const Drawing& src){}
24 Drawing(const Drawing& src){}
25
27 static void RGBACulculate(int 赤, int 緑, int 青)
28 {
29 SDL_SetRenderDrawBlendMode(Screen::GetHandle(), (SDL_BlendMode)Screen::GetRenderer()->blendMode);
30 SDL_SetRenderDrawColor
31 (
32 Screen::GetHandle(),
33 Screen::GetRenderer()->rgba.GetRed() * 赤 / 255,
34 Screen::GetRenderer()->rgba.GetGreen() * 緑 / 255,
35 Screen::GetRenderer()->rgba.GetBlue() * 青 / 255,
36 Screen::GetRenderer()->rgba.GetAlpha()
37 );
38 }
39
41 static void MakeCircle(SDL_Renderer* renderer,int x1, int y1,int x2, int y2)
42 {
43 //実装参考[http://hp.vector.co.jp/authors/VA028002/sdl/]
44 //パブリックドメインなのでわりとコピペしてます
45 int r;
46 int dx, dy;
47 int xa, ya, xb, yb;
48 int f;
49
50 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
51 SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
52 SDL_RenderClear(renderer);
53 SDL_SetRenderDrawColor(renderer,255,255,255,255);
54
55 dx = x2 - x1 < 0 ? x1 - x2 : x2 - x1;
56 dy = y2 - y1 < 0 ? y1 - y2 : y2 - y1;
57
58 r = dx / 2;
59 xa = r;
60 ya = 0;
61 f = 3 - 2 * r;
62 x1 += dx / 2;
63 y1 += dy / 2;
64 x2 = x1 + dx % 2;
65 y2 = y1 + dy % 2;
66 while (xa >= ya){
67 xb = (xa * dy) / dx;
68 yb = (ya * dy) / dx;
69
70 SDL_RenderDrawLine(renderer, xa + x2, -yb + y1,xa + x2, yb + y2); /*A*/
71 SDL_RenderDrawLine(renderer, ya + x2, -xb + y1, ya + x2, xb + y2); /*B*/
72 SDL_RenderDrawLine(renderer, -ya + x1, -xb + y1, -ya + x1, xb + y2); /*C*/
73 SDL_RenderDrawLine(renderer, -xa + x1, -yb + y1, -xa + x1, yb + y2); /*D*/
74
75 if (f >= 0){
76 xa--;
77 f -= 4 * xa;
78 }
79 ya++;
80 f += 4 * ya + 2;
81 }
82 }
83
85 static Image& GetCircle(const Color &描画色, const Rect &矩形 = {0,0,0,0}, int 太さ = 0)
86 {
87 static Image circleA;
88 static Image circleB;
89 static Image circleC;
90 const int CIRCLE_SIZE = 512;
91
92 if (circleA.GetHandle() == nullptr)
93 {
94 circleA.Make(CIRCLE_SIZE, CIRCLE_SIZE);
95 circleB.Make(CIRCLE_SIZE, CIRCLE_SIZE);
96 circleC.Make(CIRCLE_SIZE, CIRCLE_SIZE);
97
98 auto mode = Screen::GetRenderer()->blendMode;
99 auto col = Screen::GetRenderer()->rgba;
100 int alpha = Screen::GetRenderer()->rgba.GetAlpha();//Alpha値の場合ここの減算率が変化する
101 auto cam = Camera::Get();
102
103 Camera::Set();
104 Screen::SetDrawMode();
105 auto prev = Screen::GetTarget();
106
107 Screen::SetTarget(&circleA);
108 MakeCircle(Screen::GetHandle(), 0, 0, CIRCLE_SIZE, CIRCLE_SIZE);
109 Screen::SetTarget(&circleB);
110 SDL_SetRenderDrawColor(Screen::GetHandle(), 0, 0, 0, 0);
111 SDL_RenderClear(Screen::GetHandle());
112 Screen::SetTarget(&circleC);
113 Drawing::Rect({ 0, 0, CIRCLE_SIZE, CIRCLE_SIZE }, Color::White, true);
114 Screen::SetTarget(prev);
115
116 Screen::SetDrawMode(col,mode);
117 Camera::Set(cam);
118 }
119
120 if (太さ <= 0)
121 {
122 circleA.SetColor(描画色);
123 return circleA;
124 }
125 else
126 {
127 太さ = std::max(太さ * CIRCLE_SIZE * 2 / int(矩形.GetW() + 矩形.GetH()), 2);//最低2
128
129 auto prev = Screen::GetTarget();
130 auto mode = Screen::GetRenderer()->blendMode;
131 auto col = Screen::GetRenderer()->rgba;
132 int alpha = Screen::GetRenderer()->rgba.GetAlpha();//Alpha値の場合ここの減算率が変化する
133 auto cam = Camera::Get();
134
135 Camera::Set();
136 Screen::SetDrawMode();
137
138 Screen::SetTarget(&circleB);
139 circleA.SetColor(Color::White);
140 circleA.Draw({ 0, 0 });
141 circleA.SetColor(Color::Black);
142 circleA.DrawExtend({ 太さ, 太さ , CIRCLE_SIZE - 太さ*2 , CIRCLE_SIZE - 太さ*2 });
143 Screen::SetTarget(&circleC);
144 circleA.SetColor({255-alpha,255-alpha,255-alpha});
145 circleA.Draw({ 0, 0 });
146 circleA.SetColor(Color::White);
147 circleA.DrawExtend({ 太さ, 太さ , CIRCLE_SIZE - 太さ*2, CIRCLE_SIZE - 太さ*2 });
148 Screen::SetTarget(prev);
149 Camera::Set(cam);
150
151
152 if (mode == BlendMode::Mula)
153 {
154 Screen::SetDrawMode({255,255,255,alpha},BlendMode::Mula);
155 circleB.DrawExtend(矩形);
156 }
157 else
158 {
159 if (mode != BlendMode::Add)
160 {
161 Screen::SetDrawMode({ 255, 255, 255, alpha }, BlendMode::Mula);
162 circleC.DrawExtend(矩形);
163 }
164 Screen::SetDrawMode({ 描画色.GetRed(), 描画色.GetGreen(), 描画色.GetBlue(), alpha }, BlendMode::Add);
165 circleB.DrawExtend(矩形);
166 }
167
168 Screen::SetDrawMode(col, mode);
169
170 return circleB;
171 }
172 }
173
175 static void GetTriangle(const Color &描画色, const Point &中心座標 = {0,0}, int 辺の長さ = 0, double 角度 = 0, int 太さ = 0)
176 {
177 static Image imageA;
178 static Image imageB;
179 static Image imageC;
180
181 const int WSIZE = 173*2;
182 const int HSIZE = 200*2;
183
184 if (imageA.GetHandle() == nullptr)
185 {
186 imageA.Make(WSIZE, HSIZE);//高さ=√3の近似
187 imageB.Make(WSIZE, HSIZE);
188 imageC.Make(WSIZE, HSIZE);
189
190 auto prev = Screen::GetTarget();
191 auto mode = Screen::GetRenderer()->blendMode;
192 auto col = Screen::GetRenderer()->rgba;
193 auto cam = Camera::Get();
194
195 Camera::Set();
196 Screen::SetDrawMode();
197
198 Screen::SetTarget(&imageA);
199 //横向きの三角形を描画
200 SDL_SetRenderDrawColor(Screen::GetHandle(), 0, 0, 0, 0);
201 SDL_RenderClear(Screen::GetHandle());
202 SDL_SetRenderDrawBlendMode(Screen::GetHandle(), SDL_BLENDMODE_BLEND);
203 SDL_SetRenderDrawColor(Screen::GetHandle(), 255, 255, 255, 255);
204 for (int y = 0; y < HSIZE/2; ++y)
205 {
206 int x = WSIZE * y * 2 / HSIZE;
207 SDL_RenderDrawLine(Screen::GetHandle(), 0, y, x, y);
208 SDL_RenderDrawLine(Screen::GetHandle(), 0, HSIZE-y-1, x, HSIZE-y-1);
209 }
210 Screen::SetTarget(&imageB);
211 SDL_SetRenderDrawColor(Screen::GetHandle(), 0, 0, 0, 0);
212 SDL_RenderClear(Screen::GetHandle());
213 Screen::SetTarget(&imageC);
214 Drawing::Rect({ 0, 0, WSIZE, HSIZE }, Color::White, true);
215 Screen::SetTarget(prev);
216
217 Screen::SetDrawMode(col, mode);
218 Camera::Set(cam);
219 }
220
221 const double 拡大率 = double(辺の長さ) / HSIZE;
222
223 if (太さ <= 0)
224 {
225 imageA.SetColor(描画色);
226 imageA.DrawRotateAxis({ 中心座標.x ,中心座標.y}, { WSIZE/3, HSIZE/2 }, 拡大率, 角度);
227 }
228 else
229 {
230 太さ = std::max(太さ * WSIZE* 2 / (辺の長さ), 2);//最低2
231
232 auto prev = Screen::GetTarget();
233 int alpha = Screen::GetRenderer()->rgba.GetAlpha();//Alpha値によりここの減算率が変化する
234 auto mode = Screen::GetRenderer()->blendMode;
235 auto col = Screen::GetRenderer()->rgba;
236 auto cam = Camera::Get();
237
238 Camera::Set();
239 Screen::SetDrawMode();
240
241 Screen::SetTarget(&imageB);
242 imageA.SetColor(Color::White);
243 imageA.Draw({ 0, 0 });
244 imageA.SetColor(Color::Black);
245 imageA.DrawExtend({ 太さ/2, 太さ , WSIZE - 太さ*3/2, HSIZE - 太さ*2 });
246 Screen::SetTarget(&imageC);
247 imageA.SetColor({ 255 - alpha, 255 - alpha, 255 - alpha });
248 imageA.Draw({ 0, 0 });
249 imageA.SetColor(Color::White);
250 imageA.DrawExtend({ 太さ/2, 太さ , WSIZE - 太さ*3/2, HSIZE - 太さ*2 });
251 Screen::SetTarget(prev);
252 Camera::Set(cam);
253
254 if (mode == BlendMode::Mula)
255 {
256 Screen::SetDrawMode({ 255, 255, 255, alpha }, BlendMode::Mula);
257 imageB.DrawRotateAxis({ 中心座標.x, 中心座標.y }, { WSIZE / 3, HSIZE / 2 }, 拡大率, 角度);
258 }
259 else
260 {
261 if ( mode != BlendMode::Add)
262 {
263 Screen::SetDrawMode({ 255, 255, 255, alpha }, BlendMode::Mula);
264 imageC.DrawRotateAxis({ 中心座標.x, 中心座標.y }, { WSIZE / 3, HSIZE / 2 }, 拡大率, 角度);
265 }
266
267 Screen::SetDrawMode({ 描画色.GetRed(), 描画色.GetGreen(), 描画色.GetBlue(), alpha }, BlendMode::Add);
268 imageB.DrawRotateAxis({ 中心座標.x, 中心座標.y }, { WSIZE / 3, HSIZE / 2 }, 拡大率, 角度);
269 }
270
271 Screen::SetDrawMode(col, mode);
272 }
273 }
274 public:
276 static Font& GetFont()
277 {
278 static Font defaultFont;
279 return defaultFont;
280 }
281
283 static void SetDefaultFont(const char* フォント名, int 大きさ,int 行間 = 0 , bool 高品質レンダリング = true)
284 {
285 GetFont().Load(フォント名, 大きさ, 行間, 高品質レンダリング);
286 }
287
289 static void Line(const Point &始点, const Point &終点, const Color &色, int 太さ = 1)
290 {
291 if (太さ <= 1)
292 {
293 int xA,xB,yA,yB;
294 RGBACulculate(色.GetRed(), 色.GetGreen(), 色.GetBlue());
295 if (Camera::Get())
296 {
297 xA = (int)Camera::Get()->TransX(始点.x);
298 xB = (int)Camera::Get()->TransX(終点.x);
299 yA = (int)Camera::Get()->TransY(始点.y);
300 yB = (int)Camera::Get()->TransY(終点.y);
301 }
302 else
303 {
304 xA = (int)始点.x;
305 xB = (int)終点.x;
306 yA = (int)始点.y;
307 yB = (int)終点.y;
308 }
309
310 SDL_RenderDrawLine(Screen::GetHandle(), xA, yA, xB, yB);
311 }
312 else
313 {
314 static Image image;
315 if (image.GetHandle() == nullptr)
316 {
317 auto prev = Screen::GetRenderer()->target;
318 auto mode = Screen::GetRenderer()->blendMode;
319 auto col = Screen::GetRenderer()->rgba;
320 auto cam = Camera::Get();
321
322 image.Make(256, 256);
323 Camera::Set();
324 Screen::SetDrawMode();
325 Screen::SetTarget(&image);
326 Drawing::Rect({ 0, 0, 256, 256 }, Color::White, true);
327 Screen::SetTarget(prev);
328 Screen::SetDrawMode(col,mode);
329 Camera::Set(cam);
330 }
331
332 double rateX = std::sqrt((終点.x - 始点.x)*(終点.x - 始点.x) + (終点.y - 始点.y) * (終点.y - 始点.y));//太さ
333 double rateY = 太さ;//長さ
334 double angle = std::atan2( 終点.y - 始点.y , 終点.x - 始点.x);
335
336 image.SetColor(色);
337 image.DrawRotateAxis({ (始点.x + 終点.x)/2, (始点.y + 終点.y)/2 }, { 128, 128 }, rateX/256, rateY/256, angle);
338 }
339 }
340
342 static void Rect(const Rect &領域, const Color &色, bool 塗りつぶしフラグ = true)
343 {
344 SDL_Rect buf = { (int)領域.GetLeft(), (int)領域.GetTop(), (int)領域.GetW(), (int)領域.GetH() };
345
346 if (Camera::Get())
347 {
348 buf = Camera::Get()->TransRect(buf);
349 }
350
351 RGBACulculate(色.GetRed(), 色.GetGreen(), 色.GetBlue());
352 if (塗りつぶしフラグ)
353 {
354 SDL_RenderFillRect(Screen::GetHandle(), &buf);
355 }
356 else
357 {
358 SDL_RenderDrawRect(Screen::GetHandle(), &buf);
359 }
360 }
361
365 static void Circle(const Circle &円形, const Color& 色, int 太さ = 0)
366 {
367 if (円形.radius <= 0){ return; }
368
369 if (太さ <= 0)
370 {
371 GetCircle(色).DrawExtend({ 円形.x - 円形.radius, 円形.y - 円形.radius , 円形.radius*2, 円形.radius*2 });
372 }
373 else
374 {
375 GetCircle(色, { 円形.x - 円形.radius, 円形.y - 円形.radius, 円形.radius * 2, 円形.radius * 2 }, 太さ);
376 }
377 }
378
382 static void Oval(const Point &中心, int 幅, int 高さ, const Color& 色, int 太さ = 0)
383 {
384 if (太さ <= 0)
385 {
386 GetCircle(色).DrawExtend({ 中心.x - 幅 / 2, 中心.y - 高さ / 2, (double)幅, (double)高さ });
387 }
388 else
389 {
390 GetCircle(色, { 中心.x - 幅 / 2, 中心.y - 高さ / 2, 幅, 高さ }, 太さ);
391 }
392 }
393
395 static void Polygon(std::vector<Point> 頂点, const Color &色 ,int 太さ = 1)
396 {
397 for (unsigned int a = 0; a < 頂点.size() ; ++a)
398 {
399 if (a == 頂点.size() - 1)
400 {
401 //最後の辺
402 Drawing::Line(頂点[a],頂点[0],色,太さ);
403 }
404 else
405 {
406 Drawing::Line(頂点[a], 頂点[a+1], 色, 太さ);
407 }
408
409 }
410 }
411
415 static void Triangle(const Point &中心座標,int 辺の長さ , double 角度 , const Color &描画色 , int 太さ = 0)
416 {
417 if (太さ <= 0)
418 {
419 GetTriangle(描画色, 中心座標, 辺の長さ, 角度);
420 }
421 else
422 {
423 GetTriangle(描画色, 中心座標, 辺の長さ, 角度, 太さ);
424 }
425 }
426
428 static void Pixel(const Point &座標, const Color &色)
429 {
430 RGBACulculate(色.GetRed(), 色.GetGreen(), 色.GetBlue());
431
432 double x = 座標.x;
433 double y = 座標.y;
434
435 if (Camera::Get())
436 {
437 x = Camera::Get()->TransX(x);
438 y = Camera::Get()->TransY(y);
439 }
440
441 SDL_RenderDrawPoint(Screen::GetHandle(), (int)x, (int)y);
442 }
443
446 static void ImageFile(const Point &座標, const char *ファイル名, bool 透過フラグ = true)
447 {
448 Image buf(ファイル名);
449 buf.Draw(座標, false);
450 buf.Release();
451 }
452
455 static void String(const Point &座標, const Color &色, const VariadicStream &描画する文字列)
456 {
457 GetFont().Draw(座標, 色, 描画する文字列);
458 }
459 };
460 }
SDX::Font::Draw
bool Draw(const Point &座標, const Color &描画色, const VariadicStream &描画する文字列, bool 反転フラグ=false) const override
文字を描画.
Definition: Font.h:569
SDX::Image::Make
SDL_Texture * Make(int 幅, int 高さ)
空のイメージを作成.
Definition: Image.h:120
SDX::Color::GetGreen
int GetGreen() const
緑の要素を取得.
Definition: Color.h:36
SDX::Rect
矩形を表す図形クラス.
Definition: Rect.h:22
SDX::Screen::GetTarget
static Image * GetTarget()
描画先Imageを取得.
Definition: Screen.h:55
SDX::Point::y
double y
座標
Definition: Point.h:26
SDX::Drawing::Pixel
static void Pixel(const Point &座標, const Color &色)
指定座標に点を描画.
Definition: Drawing.h:428
SDX::Image::DrawRotateAxis
bool DrawRotateAxis(const Point &座標, const Point &回転軸座標, double 拡大率, double 角度, bool 反転フラグ=false) const override
回転軸、角度、拡大率を指定して描画.
Definition: Image.h:244
SDX::Renderer::rgba
Color rgba
描画輝度とα値
Definition: Renderer.h:53
SDX::Image::DrawExtend
bool DrawExtend(const Rect &描画領域, bool 反転フラグ=false) const override
指定矩形内に描画.
Definition: Image.h:201
SDX::Rect::GetTop
double GetTop() const
上端のY座標を取得.
Definition: Rect.h:124
SDX::Color::GetBlue
int GetBlue() const
青の要素を取得.
Definition: Color.h:42
SDX::Drawing
リソースを読み込まずに描画を行う関数群.
Definition: Drawing.h:17
SDX::Rect::GetLeft
double GetLeft() const
左端のX座標を取得.
Definition: Rect.h:118
SDX::Drawing::Circle
static void Circle(const Circle &円形, const Color &色, int 太さ=0)
中心と半径を指定して円を描画.
Definition: Drawing.h:365
SDX::Camera::TransRect
SDL_Rect TransRect(const SDL_Rect &変換前矩形) const
領域を画面上のどこに相当するか変換.
Definition: Camera.h:102
SDX::Circle::x
double x
座標
Definition: Circle.h:23
SDX::Drawing::Line
static void Line(const Point &始点, const Point &終点, const Color &色, int 太さ=1)
始点と終点を結ぶ直線を描画.
Definition: Drawing.h:289
SDX::Point
点を表す図形クラス.
Definition: Point.h:22
SDX::Renderer::blendMode
BlendMode blendMode
描画モード
Definition: Renderer.h:51
SDX::Drawing::String
static void String(const Point &座標, const Color &色, const VariadicStream &描画する文字列)
文字を描画.
Definition: Drawing.h:455
SDX::Font
TrueTypeFontとBMPFontをまとめて扱うクラス.
Definition: Font.h:24
SDX::Camera::TransX
double TransX(double X座標変換前) const
カメラの位置と拡大率に応じてX座標を変換.
Definition: Camera.h:84
SDX::Screen::GetRenderer
static Renderer * GetRenderer()
アクティブなRendererを取得.
Definition: Screen.h:33
SDX::Circle::y
double y
座標
Definition: Circle.h:24
SDX::Camera::TransY
double TransY(double Y座標変換前) const
カメラの位置と拡大率に応じてY座標を変換.
Definition: Camera.h:90
SDX::Screen::SetTarget
static bool SetTarget(Image *描画対象=nullptr)
描画先を変更.
Definition: Screen.h:48
SDX::Drawing::Triangle
static void Triangle(const Point &中心座標, int 辺の長さ, double 角度, const Color &描画色, int 太さ=0)
正三角形を描画.
Definition: Drawing.h:415
SDX::Color::White
static const Color White
白 [RGB]255,255,255
Definition: Color.h:81
SDX::Image
画像データを表すクラス.
Definition: Image.h:17
SDX::Color
色を表すクラス.
Definition: Color.h:11
SDX::Font::Load
bool Load(const char *フォント名, int 大きさ, int 行間=0, bool 高品質レンダリングフラグ=true)
フォントを作成する.
Definition: Font.h:182
SDX::BlendMode::Mula
積算ブレンド
SDX::Image::GetHandle
SDL_Texture * GetHandle() const
ハンドルを取得.
Definition: Image.h:175
SDX::Color::Black
static const Color Black
黒 [RGB]0,0,0
Definition: Color.h:78
SDX::Image::Release
bool Release()
イメージをメモリから開放.
Definition: Image.h:109
SDX::Screen::GetHandle
static SDL_Renderer * GetHandle()
スクリーンハンドルを取得.
Definition: Screen.h:26
SDX::Camera::Get
static Camera * Get()
現在アクティブなカメラを取得.
Definition: Camera.h:57
SDX::Screen::SetDrawMode
static void SetDrawMode(const Color &輝度＋α値=Color::White, BlendMode ブレンドモード=BlendMode::Alpha)
描画輝度と描画モードをまとめて設定
Definition: Screen.h:100
SDX::Color::GetRed
int GetRed() const
赤の要素を取得.
Definition: Color.h:30
SDX::VariadicStream
可変数引数な文字列を処理するクラス.
Definition: VariadicStream.h:25
SDX::BlendMode::Add
加算ブレンド
SDX::Drawing::ImageFile
static void ImageFile(const Point &座標, const char *ファイル名, bool 透過フラグ=true)
画像を一時的にメモリに読み込んで描画.
Definition: Drawing.h:446
SDX::Point::x
double x
座標
Definition: Point.h:25
SDX::Camera::Set
static void Set(Camera *アクティブにするCamera=nullptr)
現在アクティブなカメラを設定.
Definition: Camera.h:63
SDX::Drawing::Polygon
static void Polygon(std::vector< Point > 頂点, const Color &色, int 太さ=1)
頂点を指定して多角形を描画.
Definition: Drawing.h:395
SDX::Image::SetColor
void SetColor(const Color &描画色)
描画色を指定.
Definition: Image.h:316
SDX::Color::GetAlpha
int GetAlpha() const
透明度を取得.
Definition: Color.h:48
SDX::Drawing::GetFont
static Font & GetFont()
デフォルトのフォントを取得する.
Definition: Drawing.h:276
SDX::Circle
円を表す図形クラス.
Definition: Circle.h:20
SDX::Image::Draw
bool Draw(const Point &座標, bool 反転フラグ=false) const override
指定座標に描画.
Definition: Image.h:181
SDX::Drawing::SetDefaultFont
static void SetDefaultFont(const char *フォント名, int 大きさ, int 行間=0, bool 高品質レンダリング=true)
デフォルトのフォントを設定する.
Definition: Drawing.h:283
SDX::Rect::GetW
double GetW() const override
幅を取得.
Definition: Rect.h:107
SDX::Drawing::Rect
static void Rect(const Rect &領域, const Color &色, bool 塗りつぶしフラグ=true)
左上の座標と大きさを指定して矩形を描画.
Definition: Drawing.h:342
SDX::Rect::GetH
double GetH() const override
高さを取得.
Definition: Rect.h:112
SDX::Circle::radius
double radius
半径
Definition: Circle.h:25
SDX::Drawing::Oval
static void Oval(const Point &中心, int 幅, int 高さ, const Color &色, int 太さ=0)
中心と外接する四角形の大きさを指定して楕円を描画.
Definition: Drawing.h:382