SDXFrameWork 0.10 SDXFrameWork

- Main Page
- Related Pages
- Classes

All Classes Namespaces Functions Variables Enumerations Enumerator Pages
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,255,255,255,255);
52
53 dx = x2 - x1 < 0 ? x1 - x2 : x2 - x1;
54 dy = y2 - y1 < 0 ? y1 - y2 : y2 - y1;
55
56 r = dx / 2;
57 xa = r;
58 ya = 0;
59 f = 3 - 2 * r;
60 x1 += dx / 2;
61 y1 += dy / 2;
62 x2 = x1 + dx % 2;
63 y2 = y1 + dy % 2;
64 while (xa >= ya){
65 xb = (xa * dy) / dx;
66 yb = (ya * dy) / dx;
67
68 SDL_RenderDrawLine(renderer, xa + x2, -yb + y1,xa + x2, yb + y2); /*A*/
69 SDL_RenderDrawLine(renderer, ya + x2, -xb + y1, ya + x2, xb + y2); /*B*/
70 SDL_RenderDrawLine(renderer, -ya + x1, -xb + y1, -ya + x1, xb + y2); /*C*/
71 SDL_RenderDrawLine(renderer, -xa + x1, -yb + y1, -xa + x1, yb + y2); /*D*/
72
73 if (f >= 0){
74 xa--;
75 f -= 4 * xa;
76 }
77 ya++;
78 f += 4 * ya + 2;
79 }
80 }
81
83 static Image& GetCircle(const Color &描画色, const Rect &矩形 = {0,0,0,0}, int 太さ = 0)
84 {
85 static Image circleA;
86 static Image circleB;
87 static Image circleC;
88 const int CIRCLE_SIZE = 512;
89
90 if (circleA.GetHandle() == nullptr)
91 {
92 circleA.Make(CIRCLE_SIZE, CIRCLE_SIZE);
93 circleB.Make(CIRCLE_SIZE, CIRCLE_SIZE);
94 circleC.Make(CIRCLE_SIZE, CIRCLE_SIZE);
95
96 auto mode = Screen::GetRenderer()->blendMode;
97 auto col = Screen::GetRenderer()->rgba;
98 int alpha = Screen::GetRenderer()->rgba.GetAlpha();//Alpha値の場合ここの減算率が変化する
99 auto cam = Camera::Get();
100
101 Camera::Set();
102 Screen::SetDrawMode();
103 auto prev = Screen::GetTarget();
104 Screen::SetTarget(&circleA);
105 MakeCircle(Screen::GetHandle(), 0, 0, CIRCLE_SIZE, CIRCLE_SIZE);
106 Screen::SetTarget(&circleC);
107 Drawing::Rect({ 0, 0, CIRCLE_SIZE, CIRCLE_SIZE }, Color::White, true);
108 Screen::SetTarget(prev);
109 Screen::SetDrawMode(col,mode);
110 Camera::Set(cam);
111
112 }
113
114 if (太さ <= 0)
115 {
116 circleA.SetColor(描画色);
117 return circleA;
118 }
119 else
120 {
121 太さ = std::max(太さ * CIRCLE_SIZE * 2 / int(矩形.GetW() + 矩形.GetH()), 2);//最低2
122
123 auto prev = Screen::GetTarget();
124 auto mode = Screen::GetRenderer()->blendMode;
125 auto col = Screen::GetRenderer()->rgba;
126 int alpha = Screen::GetRenderer()->rgba.GetAlpha();//Alpha値の場合ここの減算率が変化する
127 auto cam = Camera::Get();
128
129 Camera::Set();
130 Screen::SetDrawMode();
131
132 Screen::SetTarget(&circleB);
133 circleA.SetColor(Color::White);
134 circleA.Draw({ 0, 0 });
135 circleA.SetColor(Color::Black);
136 circleA.DrawExtend({ 太さ, 太さ , CIRCLE_SIZE - 太さ*2 , CIRCLE_SIZE - 太さ*2 });
137 Screen::SetTarget(&circleC);
138 circleA.SetColor({255-alpha,255-alpha,255-alpha});
139 circleA.Draw({ 0, 0 });
140 circleA.SetColor(Color::White);
141 circleA.DrawExtend({ 太さ, 太さ , CIRCLE_SIZE - 太さ*2, CIRCLE_SIZE - 太さ*2 });
142 Screen::SetTarget(prev);
143 Camera::Set(cam);
144
145
146 if (mode == BlendMode::Mula)
147 {
148 Screen::SetDrawMode({255,255,255,alpha},BlendMode::Mula);
149 circleB.DrawExtend(矩形);
150 }
151 else
152 {
153 if (mode != BlendMode::Add)
154 {
155 Screen::SetDrawMode({ 255, 255, 255, alpha }, BlendMode::Mula);
156 circleC.DrawExtend(矩形);
157 }
158 Screen::SetDrawMode({ 描画色.GetRed(), 描画色.GetGreen(), 描画色.GetBlue(), alpha }, BlendMode::Add);
159 circleB.DrawExtend(矩形);
160 }
161
162 Screen::SetDrawMode(col, mode);
163
164 return circleB;
165 }
166 }
167
169 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)
170 {
171 static Image imageA;
172 static Image imageB;
173 static Image imageC;
174
175 const int WSIZE = 173*2;
176 const int HSIZE = 200*2;
177
178 if (imageA.GetHandle() == nullptr)
179 {
180 imageA.Make(WSIZE, HSIZE);//高さ=√3の近似
181 imageB.Make(WSIZE, HSIZE);
182 imageC.Make(WSIZE, HSIZE);
183
184 auto prev = Screen::GetTarget();
185 auto mode = Screen::GetRenderer()->blendMode;
186 auto col = Screen::GetRenderer()->rgba;
187 auto cam = Camera::Get();
188
189 Camera::Set();
190 Screen::SetDrawMode();
191
192 Screen::SetTarget(&imageA);
193 //横向きの三角形を描画
194 SDL_SetRenderDrawBlendMode(Screen::GetHandle(), SDL_BLENDMODE_BLEND);
195 SDL_SetRenderDrawColor(Screen::GetHandle(), 255, 255, 255, 255);
196 for (int y = 0; y < HSIZE/2; ++y)
197 {
198 int x = WSIZE * y * 2 / HSIZE;
199 SDL_RenderDrawLine(Screen::GetHandle(), 0, y, x, y);
200 SDL_RenderDrawLine(Screen::GetHandle(), 0, HSIZE-y-1, x, HSIZE-y-1);
201 }
202 Screen::SetTarget(&imageC);
203 Drawing::Rect({ 0, 0, WSIZE, HSIZE }, Color::White, true);
204 Screen::SetTarget(prev);
205
206 Screen::SetDrawMode(col, mode);
207 Camera::Set(cam);
208 }
209
210 const double 拡大率 = double(辺の長さ) / HSIZE;
211
212 if (太さ <= 0)
213 {
214 imageA.SetColor(描画色);
215 imageA.DrawRotateAxis({ 中心座標.x ,中心座標.y}, { WSIZE/3, HSIZE/2 }, 拡大率, 角度);
216 }
217 else
218 {
219 太さ = std::max(太さ * WSIZE* 2 / (辺の長さ), 2);//最低2
220
221 auto prev = Screen::GetTarget();
222 int alpha = Screen::GetRenderer()->rgba.GetAlpha();//Alpha値によりここの減算率が変化する
223 auto mode = Screen::GetRenderer()->blendMode;
224 auto col = Screen::GetRenderer()->rgba;
225 auto cam = Camera::Get();
226
227 Camera::Set();
228 Screen::SetDrawMode();
229
230 Screen::SetTarget(&imageB);
231 imageA.SetColor(Color::White);
232 imageA.Draw({ 0, 0 });
233 imageA.SetColor(Color::Black);
234 imageA.DrawExtend({ 太さ/2, 太さ , WSIZE - 太さ*3/2, HSIZE - 太さ*2 });
235 Screen::SetTarget(&imageC);
236 imageA.SetColor({ 255 - alpha, 255 - alpha, 255 - alpha });
237 imageA.Draw({ 0, 0 });
238 imageA.SetColor(Color::White);
239 imageA.DrawExtend({ 太さ/2, 太さ , WSIZE - 太さ*3/2, HSIZE - 太さ*2 });
240 Screen::SetTarget(prev);
241 Camera::Set(cam);
242
243 if (mode == BlendMode::Mula)
244 {
245 Screen::SetDrawMode({ 255, 255, 255, alpha }, BlendMode::Mula);
246 imageB.DrawRotateAxis({ 中心座標.x, 中心座標.y }, { WSIZE / 3, HSIZE / 2 }, 拡大率, 角度);
247 }
248 else
249 {
250 if ( mode != BlendMode::Add)
251 {
252 Screen::SetDrawMode({ 255, 255, 255, alpha }, BlendMode::Mula);
253 imageC.DrawRotateAxis({ 中心座標.x, 中心座標.y }, { WSIZE / 3, HSIZE / 2 }, 拡大率, 角度);
254 }
255
256 Screen::SetDrawMode({ 描画色.GetRed(), 描画色.GetGreen(), 描画色.GetBlue(), alpha }, BlendMode::Add);
257 imageB.DrawRotateAxis({ 中心座標.x, 中心座標.y }, { WSIZE / 3, HSIZE / 2 }, 拡大率, 角度);
258 }
259
260 Screen::SetDrawMode(col, mode);
261 }
262 }
263 public:
265 static Font& GetFont()
266 {
267 static Font defaultFont;
268 return defaultFont;
269 }
270
272 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)
273 {
274 GetFont().Load(フォント名, 大きさ, 行間, 高品質レンダリング);
275 }
276
278 static void Line(const Point &始点, const Point &終点, const Color &色, int 太さ = 1)
279 {
280 if (太さ <= 1)
281 {
282 int xA,xB,yA,yB;
283 RGBACulculate(色.GetRed(), 色.GetGreen(), 色.GetBlue());
284 if (Camera::Get())
285 {
286 xA = (int)Camera::Get()->TransX(始点.x);
287 xB = (int)Camera::Get()->TransX(終点.x);
288 yA = (int)Camera::Get()->TransY(始点.y);
289 yB = (int)Camera::Get()->TransY(終点.y);
290 }
291 else
292 {
293 xA = (int)始点.x;
294 xB = (int)終点.x;
295 yA = (int)始点.y;
296 yB = (int)終点.y;
297 }
298
299 SDL_RenderDrawLine(Screen::GetHandle(), xA, yA, xB, yB);
300 }
301 else
302 {
303 static Image image;
304 if (image.GetHandle() == nullptr)
305 {
306 auto prev = Screen::GetRenderer()->target;
307 auto mode = Screen::GetRenderer()->blendMode;
308 auto col = Screen::GetRenderer()->rgba;
309 auto cam = Camera::Get();
310
311 image.Make(256, 256);
312 Camera::Set();
313 Screen::SetDrawMode();
314 Screen::SetTarget(&image);
315 Drawing::Rect({ 0, 0, 256, 256 }, Color::White, true);
316 Screen::SetTarget(prev);
317 Screen::SetDrawMode(col,mode);
318 Camera::Set(cam);
319 }
320
321 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
322 double rateY = 太さ;//長さ
323 double angle = std::atan2( 終点.y - 始点.y , 終点.x - 始点.x);
324
325 image.SetColor(色);
326 image.DrawRotateAxis({ (始点.x + 終点.x)/2, (始点.y + 終点.y)/2 }, { 128, 128 }, rateX/256, rateY/256, angle);
327 }
328 }
329
331 static void Rect(const Rect &領域, const Color &色, bool 塗りつぶしフラグ = true)
332 {
333 SDL_Rect buf = { (int)領域.GetLeft(), (int)領域.GetTop(), (int)領域.GetW(), (int)領域.GetH() };
334
335 if (Camera::Get())
336 {
337 buf = Camera::Get()->TransRect(buf);
338 }
339
340 RGBACulculate(色.GetRed(), 色.GetGreen(), 色.GetBlue());
341 if (塗りつぶしフラグ)
342 {
343 SDL_RenderFillRect(Screen::GetHandle(), &buf);
344 }
345 else
346 {
347 SDL_RenderDrawRect(Screen::GetHandle(), &buf);
348 }
349 }
350
354 static void Circle(const Circle &円形, const Color& 色, int 太さ = 0)
355 {
356 if (円形.radius <= 0){ return; }
357
358 if (太さ <= 0)
359 {
360 GetCircle(色).DrawExtend({ 円形.x - 円形.radius, 円形.y - 円形.radius , 円形.radius*2, 円形.radius*2 });
361 }
362 else
363 {
364 GetCircle(色, { 円形.x - 円形.radius, 円形.y - 円形.radius, 円形.radius * 2, 円形.radius * 2 }, 太さ);
365 }
366 }
367
371 static void Oval(const Point &中心, int 幅, int 高さ, const Color& 色, int 太さ = 0)
372 {
373 if (太さ <= 0)
374 {
375 GetCircle(色).DrawExtend({ 中心.x - 幅 / 2, 中心.y - 高さ / 2, (double)幅, (double)高さ });
376 }
377 else
378 {
379 GetCircle(色, { 中心.x - 幅 / 2, 中心.y - 高さ / 2, 幅, 高さ }, 太さ);
380 }
381 }
382
384 static void Polygon(std::vector<Point> 頂点, const Color &色 ,int 太さ = 1)
385 {
386 for (unsigned int a = 0; a < 頂点.size() ; ++a)
387 {
388 if (a == 頂点.size() - 1)
389 {
390 //最後の辺
391 Drawing::Line(頂点[a],頂点[0],色,太さ);
392 }
393 else
394 {
395 Drawing::Line(頂点[a], 頂点[a+1], 色, 太さ);
396 }
397
398 }
399 }
400
404 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)
405 {
406 if (太さ <= 0)
407 {
408 GetTriangle(描画色, 中心座標, 辺の長さ, 角度);
409 }
410 else
411 {
412 GetTriangle(描画色, 中心座標, 辺の長さ, 角度, 太さ);
413 }
414 }
415
417 static void Pixel(const Point &座標, const Color &色)
418 {
419 RGBACulculate(色.GetRed(), 色.GetGreen(), 色.GetBlue());
420
421 double x = 座標.x;
422 double y = 座標.y;
423
424 if (Camera::Get())
425 {
426 x = Camera::Get()->TransX(x);
427 y = Camera::Get()->TransY(y);
428 }
429
430 SDL_RenderDrawPoint(Screen::GetHandle(), (int)x, (int)y);
431 }
432
435 static void ImageFile(const Point &座標, const char *ファイル名, bool 透過フラグ = true)
436 {
437 Image buf(ファイル名);
438 buf.Draw(座標, false);
439 buf.Release();
440 }
441
444 static void String(const Point &座標, const Color &色, const VariadicStream &描画する文字列)
445 {
446 GetFont().Draw(座標, 色, 描画する文字列);
447 }
448 };
449 }
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:309
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:417
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:52
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:354
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:103
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:278
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:50
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:444
SDX::Font
TrueTypeFontとBMPFontをまとめて扱うクラス.
Definition: Font.h:23
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:85
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:91
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:404
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:58
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:435
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:64
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:384
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:265
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:272
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:331
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:371