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b311480e | 1 | // Created on: 2011-07-13 |
2 | // Created by: Sergey ZERCHANINOV | |
a174a3c5 | 3 | // Copyright (c) 2011-2013 OPEN CASCADE SAS |
b311480e | 4 | // |
973c2be1 | 5 | // This file is part of Open CASCADE Technology software library. |
b311480e | 6 | // |
d5f74e42 | 7 | // This library is free software; you can redistribute it and/or modify it under |
8 | // the terms of the GNU Lesser General Public License version 2.1 as published | |
973c2be1 | 9 | // by the Free Software Foundation, with special exception defined in the file |
10 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT | |
11 | // distribution for complete text of the license and disclaimer of any warranty. | |
b311480e | 12 | // |
973c2be1 | 13 | // Alternatively, this file may be used under the terms of Open CASCADE |
14 | // commercial license or contractual agreement. | |
b311480e | 15 | |
2166f0fa | 16 | #include <OpenGl_AspectText.hxx> |
30f0ad28 | 17 | #include <OpenGl_GlCore11.hxx> |
a174a3c5 | 18 | #include <OpenGl_GraphicDriver.hxx> |
30f0ad28 | 19 | #include <OpenGl_ShaderManager.hxx> |
20 | #include <OpenGl_ShaderProgram.hxx> | |
21 | #include <OpenGl_ShaderStates.hxx> | |
22 | #include <OpenGl_Text.hxx> | |
bf75be98 | 23 | #include <OpenGl_Workspace.hxx> |
ce01ec26 | 24 | #include <OpenGl_View.hxx> |
2166f0fa | 25 | |
a174a3c5 | 26 | #include <Font_FontMgr.hxx> |
825aa485 | 27 | #include <Graphic3d_TransformUtils.hxx> |
a174a3c5 | 28 | #include <TCollection_HAsciiString.hxx> |
29 | ||
a174a3c5 | 30 | #ifdef HAVE_GL2PS |
31 | #include <gl2ps.h> | |
32 | #endif | |
33 | ||
34 | namespace | |
2166f0fa | 35 | { |
c827ea3a | 36 | static const GLdouble THE_IDENTITY_MATRIX[16] = |
a174a3c5 | 37 | { |
c827ea3a | 38 | 1.0, 0.0, 0.0, 0.0, |
39 | 0.0, 1.0, 0.0, 0.0, | |
40 | 0.0, 0.0, 1.0, 0.0, | |
41 | 0.0, 0.0, 0.0, 1.0 | |
a174a3c5 | 42 | }; |
43 | ||
44 | #ifdef HAVE_GL2PS | |
45 | static char const* TheFamily[] = {"Helvetica", "Courier", "Times"}; | |
46 | static char const* TheItalic[] = {"Oblique", "Oblique", "Italic"}; | |
47 | static char const* TheBase[] = {"", "", "-Roman"}; | |
48 | ||
49 | //! Convert font name used for rendering to some "good" font names | |
50 | //! that produce good vector text. | |
51 | static void getGL2PSFontName (const char* theSrcFont, | |
52 | char* thePsFont) | |
53 | { | |
54 | if (strstr (theSrcFont, "Symbol")) | |
55 | { | |
56 | sprintf (thePsFont, "%s", "Symbol"); | |
57 | return; | |
58 | } | |
59 | else if (strstr (theSrcFont, "ZapfDingbats")) | |
60 | { | |
61 | sprintf (thePsFont, "%s", "WingDings"); | |
62 | return; | |
63 | } | |
2166f0fa | 64 | |
a174a3c5 | 65 | int aFontId = 0; |
66 | bool isBold = false; | |
67 | bool isItalic = false; | |
68 | if (strstr (theSrcFont, "Courier")) | |
69 | { | |
70 | aFontId = 1; | |
71 | } | |
72 | else if (strstr (theSrcFont, "Times")) | |
73 | { | |
74 | aFontId = 2; | |
75 | } | |
2166f0fa | 76 | |
a174a3c5 | 77 | if (strstr (theSrcFont, "Bold")) |
78 | { | |
79 | isBold = true; | |
80 | } | |
81 | if (strstr (theSrcFont, "Italic") | |
82 | || strstr (theSrcFont, "Oblique")) | |
83 | { | |
84 | isItalic = true; | |
85 | } | |
2166f0fa | 86 | |
a174a3c5 | 87 | if (isBold) |
88 | { | |
a174a3c5 | 89 | if (isItalic) |
90 | { | |
8b224a09 | 91 | sprintf (thePsFont, "%s-Bold%s", TheFamily[aFontId], TheItalic[aFontId]); |
92 | } | |
93 | else | |
94 | { | |
95 | sprintf (thePsFont, "%s-Bold", TheFamily[aFontId]); | |
a174a3c5 | 96 | } |
97 | } | |
98 | else if (isItalic) | |
99 | { | |
100 | sprintf (thePsFont, "%s-%s", TheFamily[aFontId], TheItalic[aFontId]); | |
101 | } | |
102 | else | |
103 | { | |
104 | sprintf (thePsFont, "%s%s", TheFamily[aFontId], TheBase[aFontId]); | |
105 | } | |
106 | } | |
2166f0fa | 107 | |
a174a3c5 | 108 | static void exportText (const NCollection_String& theText, |
109 | const Standard_Boolean theIs2d, | |
110 | const OpenGl_AspectText& theAspect, | |
111 | const Standard_Integer theHeight) | |
112 | { | |
2166f0fa | 113 | |
a174a3c5 | 114 | char aPsFont[64]; |
115 | getGL2PSFontName (theAspect.FontName().ToCString(), aPsFont); | |
2166f0fa | 116 | |
ca3c13d1 | 117 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 118 | if (theIs2d) |
119 | { | |
120 | glRasterPos2f (0.0f, 0.0f); | |
121 | } | |
122 | else | |
123 | { | |
124 | glRasterPos3f (0.0f, 0.0f, 0.0f); | |
125 | } | |
126 | ||
127 | GLubyte aZero = 0; | |
128 | glBitmap (1, 1, 0, 0, 0, 0, &aZero); | |
ca3c13d1 | 129 | #endif |
a174a3c5 | 130 | |
131 | // Standard GL2PS's alignment isn't used, because it doesn't work correctly | |
132 | // for all formats, therefore alignment is calculated manually relative | |
133 | // to the bottom-left corner, which corresponds to the GL2PS_TEXT_BL value | |
105aae76 | 134 | gl2psTextOpt (theText.ToCString(), aPsFont, (GLshort)theHeight, GL2PS_TEXT_BL, theAspect.Angle()); |
a174a3c5 | 135 | } |
136 | #endif | |
137 | ||
138 | }; | |
139 | ||
140 | // ======================================================================= | |
141 | // function : OpenGl_Text | |
142 | // purpose : | |
143 | // ======================================================================= | |
144 | OpenGl_Text::OpenGl_Text() | |
145 | : myWinX (0.0f), | |
146 | myWinY (0.0f), | |
147 | myWinZ (0.0f), | |
148 | myScaleHeight (1.0f), | |
149 | myPoint (0.0f, 0.0f, 0.0f), | |
ce01ec26 | 150 | myIs2d (false), |
151 | myHasPlane (false) | |
a174a3c5 | 152 | { |
153 | myParams.Height = 10; | |
154 | myParams.HAlign = Graphic3d_HTA_LEFT; | |
155 | myParams.VAlign = Graphic3d_VTA_BOTTOM; | |
2166f0fa SK |
156 | } |
157 | ||
a174a3c5 | 158 | // ======================================================================= |
159 | // function : OpenGl_Text | |
160 | // purpose : | |
161 | // ======================================================================= | |
b64d84be | 162 | OpenGl_Text::OpenGl_Text (const Standard_Utf8Char* theText, |
163 | const OpenGl_Vec3& thePoint, | |
164 | const OpenGl_TextParam& theParams) | |
a174a3c5 | 165 | : myWinX (0.0f), |
166 | myWinY (0.0f), | |
167 | myWinZ (0.0f), | |
168 | myScaleHeight (1.0f), | |
169 | myExportHeight (1.0f), | |
170 | myParams (theParams), | |
b64d84be | 171 | myString (theText), |
a174a3c5 | 172 | myPoint (thePoint), |
ce01ec26 | 173 | myIs2d (false), |
174 | myHasPlane (false) | |
a174a3c5 | 175 | { |
176 | // | |
177 | } | |
2166f0fa | 178 | |
ce01ec26 | 179 | // ======================================================================= |
180 | // function : OpenGl_Text | |
181 | // purpose : | |
182 | // ======================================================================= | |
183 | OpenGl_Text::OpenGl_Text (const Standard_Utf8Char* theText, | |
184 | const gp_Ax2& theOrientation, | |
185 | const OpenGl_TextParam& theParams) | |
186 | : myWinX (0.0), | |
187 | myWinY (0.0), | |
188 | myWinZ (0.0), | |
189 | myScaleHeight (1.0), | |
190 | myExportHeight (1.0), | |
191 | myParams (theParams), | |
192 | myString (theText), | |
193 | myIs2d (false), | |
194 | myOrientation (theOrientation), | |
195 | myHasPlane (true) | |
196 | { | |
197 | const gp_Pnt& aPoint = theOrientation.Location(); | |
198 | myPoint = OpenGl_Vec3 (static_cast<Standard_ShortReal> (aPoint.X()), | |
199 | static_cast<Standard_ShortReal> (aPoint.Y()), | |
200 | static_cast<Standard_ShortReal> (aPoint.Z())); | |
201 | } | |
202 | ||
a174a3c5 | 203 | // ======================================================================= |
204 | // function : SetPosition | |
205 | // purpose : | |
206 | // ======================================================================= | |
207 | void OpenGl_Text::SetPosition (const OpenGl_Vec3& thePoint) | |
2166f0fa | 208 | { |
a174a3c5 | 209 | myPoint = thePoint; |
2166f0fa SK |
210 | } |
211 | ||
a174a3c5 | 212 | // ======================================================================= |
213 | // function : SetFontSize | |
214 | // purpose : | |
215 | // ======================================================================= | |
216 | void OpenGl_Text::SetFontSize (const Handle(OpenGl_Context)& theCtx, | |
217 | const Standard_Integer theFontSize) | |
218 | { | |
219 | if (myParams.Height != theFontSize) | |
220 | { | |
10b9c7df | 221 | Release (theCtx.operator->()); |
a174a3c5 | 222 | } |
223 | myParams.Height = theFontSize; | |
224 | } | |
225 | ||
226 | // ======================================================================= | |
227 | // function : Init | |
228 | // purpose : | |
229 | // ======================================================================= | |
230 | void OpenGl_Text::Init (const Handle(OpenGl_Context)& theCtx, | |
231 | const Standard_Utf8Char* theText, | |
232 | const OpenGl_Vec3& thePoint) | |
233 | { | |
10b9c7df | 234 | releaseVbos (theCtx.operator->()); |
a174a3c5 | 235 | myIs2d = false; |
236 | myPoint = thePoint; | |
237 | myString.FromUnicode (theText); | |
238 | } | |
239 | ||
240 | // ======================================================================= | |
241 | // function : Init | |
242 | // purpose : | |
243 | // ======================================================================= | |
244 | void OpenGl_Text::Init (const Handle(OpenGl_Context)& theCtx, | |
245 | const Standard_Utf8Char* theText, | |
246 | const OpenGl_Vec3& thePoint, | |
247 | const OpenGl_TextParam& theParams) | |
248 | { | |
249 | if (myParams.Height != theParams.Height) | |
250 | { | |
10b9c7df | 251 | Release (theCtx.operator->()); |
a174a3c5 | 252 | } |
253 | else | |
254 | { | |
10b9c7df | 255 | releaseVbos (theCtx.operator->()); |
a174a3c5 | 256 | } |
257 | myIs2d = false; | |
258 | myParams = theParams; | |
259 | myPoint = thePoint; | |
260 | myString.FromUnicode (theText); | |
261 | } | |
2166f0fa | 262 | |
a174a3c5 | 263 | // ======================================================================= |
264 | // function : Init | |
265 | // purpose : | |
266 | // ======================================================================= | |
267 | void OpenGl_Text::Init (const Handle(OpenGl_Context)& theCtx, | |
268 | const TCollection_ExtendedString& theText, | |
269 | const OpenGl_Vec2& thePoint, | |
270 | const OpenGl_TextParam& theParams) | |
2166f0fa | 271 | { |
a174a3c5 | 272 | if (myParams.Height != theParams.Height) |
273 | { | |
10b9c7df | 274 | Release (theCtx.operator->()); |
a174a3c5 | 275 | } |
276 | else | |
277 | { | |
10b9c7df | 278 | releaseVbos (theCtx.operator->()); |
a174a3c5 | 279 | } |
280 | myIs2d = true; | |
281 | myParams = theParams; | |
282 | myPoint.xy() = thePoint; | |
283 | myPoint.z() = 0.0f; | |
284 | myString.FromUnicode ((Standard_Utf16Char* )theText.ToExtString()); | |
285 | } | |
286 | ||
287 | // ======================================================================= | |
288 | // function : ~OpenGl_Text | |
289 | // purpose : | |
290 | // ======================================================================= | |
291 | OpenGl_Text::~OpenGl_Text() | |
292 | { | |
293 | // | |
294 | } | |
295 | ||
296 | // ======================================================================= | |
297 | // function : releaseVbos | |
298 | // purpose : | |
299 | // ======================================================================= | |
10b9c7df | 300 | void OpenGl_Text::releaseVbos (OpenGl_Context* theCtx) |
a174a3c5 | 301 | { |
302 | for (Standard_Integer anIter = 0; anIter < myVertsVbo.Length(); ++anIter) | |
303 | { | |
304 | Handle(OpenGl_VertexBuffer)& aVerts = myVertsVbo.ChangeValue (anIter); | |
305 | Handle(OpenGl_VertexBuffer)& aTCrds = myTCrdsVbo.ChangeValue (anIter); | |
306 | ||
10b9c7df | 307 | if (theCtx) |
a174a3c5 | 308 | { |
309 | theCtx->DelayedRelease (aVerts); | |
310 | theCtx->DelayedRelease (aTCrds); | |
311 | } | |
312 | aVerts.Nullify(); | |
313 | aTCrds.Nullify(); | |
314 | } | |
315 | myTextures.Clear(); | |
316 | myVertsVbo.Clear(); | |
317 | myTCrdsVbo.Clear(); | |
a174a3c5 | 318 | } |
319 | ||
320 | // ======================================================================= | |
321 | // function : Release | |
322 | // purpose : | |
323 | // ======================================================================= | |
10b9c7df | 324 | void OpenGl_Text::Release (OpenGl_Context* theCtx) |
a174a3c5 | 325 | { |
326 | releaseVbos (theCtx); | |
327 | if (!myFont.IsNull()) | |
328 | { | |
329 | Handle(OpenGl_Context) aCtx = theCtx; | |
330 | const TCollection_AsciiString aKey = myFont->ResourceKey(); | |
331 | myFont.Nullify(); | |
c04c30b3 | 332 | if (! aCtx.IsNull()) |
10b9c7df | 333 | aCtx->ReleaseResource (aKey, Standard_True); |
a174a3c5 | 334 | } |
335 | } | |
336 | ||
337 | // ======================================================================= | |
338 | // function : StringSize | |
339 | // purpose : | |
340 | // ======================================================================= | |
341 | void OpenGl_Text::StringSize (const Handle(OpenGl_Context)& theCtx, | |
342 | const NCollection_String& theText, | |
343 | const OpenGl_AspectText& theTextAspect, | |
344 | const OpenGl_TextParam& theParams, | |
4b1c8733 | 345 | const unsigned int theResolution, |
a174a3c5 | 346 | Standard_ShortReal& theWidth, |
347 | Standard_ShortReal& theAscent, | |
348 | Standard_ShortReal& theDescent) | |
349 | { | |
350 | theWidth = 0.0f; | |
351 | theAscent = 0.0f; | |
352 | theDescent = 0.0f; | |
4b1c8733 | 353 | const TCollection_AsciiString aFontKey = FontKey (theTextAspect, theParams.Height, theResolution); |
354 | Handle(OpenGl_Font) aFont = FindFont (theCtx, theTextAspect, theParams.Height, theResolution, aFontKey); | |
a174a3c5 | 355 | if (aFont.IsNull() || !aFont->IsValid()) |
356 | { | |
2166f0fa | 357 | return; |
a174a3c5 | 358 | } |
359 | ||
360 | theAscent = aFont->Ascender(); | |
361 | theDescent = aFont->Descender(); | |
362 | ||
363 | GLfloat aWidth = 0.0f; | |
364 | for (NCollection_Utf8Iter anIter = theText.Iterator(); *anIter != 0;) | |
365 | { | |
366 | const Standard_Utf32Char aCharThis = *anIter; | |
367 | const Standard_Utf32Char aCharNext = *++anIter; | |
368 | ||
369 | if (aCharThis == '\x0D' // CR (carriage return) | |
370 | || aCharThis == '\a' // BEL (alarm) | |
371 | || aCharThis == '\f' // FF (form feed) NP (new page) | |
372 | || aCharThis == '\b' // BS (backspace) | |
373 | || aCharThis == '\v') // VT (vertical tab) | |
374 | { | |
375 | continue; // skip unsupported carriage control codes | |
376 | } | |
377 | else if (aCharThis == '\x0A') // LF (line feed, new line) | |
378 | { | |
379 | theWidth = Max (theWidth, aWidth); | |
380 | aWidth = 0.0f; | |
381 | continue; | |
382 | } | |
383 | else if (aCharThis == ' ') | |
384 | { | |
385 | aWidth += aFont->AdvanceX (aCharThis, aCharNext); | |
386 | continue; | |
387 | } | |
388 | else if (aCharThis == '\t') | |
389 | { | |
390 | aWidth += aFont->AdvanceX (' ', aCharNext) * 8.0f; | |
391 | continue; | |
392 | } | |
393 | ||
394 | aWidth += aFont->AdvanceX (aCharThis, aCharNext); | |
395 | } | |
396 | theWidth = Max (theWidth, aWidth); | |
397 | ||
398 | Handle(OpenGl_Context) aCtx = theCtx; | |
399 | aFont.Nullify(); | |
400 | aCtx->ReleaseResource (aFontKey, Standard_True); | |
401 | } | |
402 | ||
403 | // ======================================================================= | |
404 | // function : Render | |
405 | // purpose : | |
406 | // ======================================================================= | |
407 | void OpenGl_Text::Render (const Handle(OpenGl_Workspace)& theWorkspace) const | |
408 | { | |
25ef750e | 409 | const OpenGl_AspectText* aTextAspect = theWorkspace->AspectText (Standard_True); |
410 | const Handle(OpenGl_Texture) aPrevTexture = theWorkspace->DisableTexture(); | |
411 | const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext(); | |
30f0ad28 | 412 | |
b990e557 | 413 | // Bind custom shader program or generate default version |
4e1523ef | 414 | if (aCtx->core20fwd != NULL) |
30f0ad28 | 415 | { |
b990e557 | 416 | aCtx->ShaderManager()->BindProgram ( |
417 | aTextAspect, aTextAspect->ShaderProgramRes (aCtx)); | |
30f0ad28 | 418 | } |
419 | ||
c357e426 | 420 | myOrientationMatrix = theWorkspace->View()->Camera()->OrientationMatrix(); |
ce01ec26 | 421 | myProjMatrix.Convert (aCtx->ProjectionState.Current()); |
422 | ||
a174a3c5 | 423 | // use highlight color or colors from aspect |
424 | if (theWorkspace->NamedStatus & OPENGL_NS_HIGHLIGHT) | |
425 | { | |
426 | render (theWorkspace->PrinterContext(), | |
30f0ad28 | 427 | aCtx, |
a174a3c5 | 428 | *aTextAspect, |
429 | *theWorkspace->HighlightColor, | |
4b1c8733 | 430 | *theWorkspace->HighlightColor, |
431 | theWorkspace->View()->RenderingParams().Resolution); | |
a174a3c5 | 432 | } |
433 | else | |
434 | { | |
435 | render (theWorkspace->PrinterContext(), | |
30f0ad28 | 436 | aCtx, |
a174a3c5 | 437 | *aTextAspect, |
438 | aTextAspect->Color(), | |
4b1c8733 | 439 | aTextAspect->SubtitleColor(), |
440 | theWorkspace->View()->RenderingParams().Resolution); | |
a174a3c5 | 441 | } |
2166f0fa | 442 | |
c6ad5e5f | 443 | aCtx->BindProgram (NULL); |
444 | ||
a174a3c5 | 445 | // restore aspects |
446 | if (!aPrevTexture.IsNull()) | |
447 | { | |
448 | theWorkspace->EnableTexture (aPrevTexture); | |
449 | } | |
b34efb62 | 450 | |
451 | // restore Z buffer settings | |
eae454e3 | 452 | if (theWorkspace->UseZBuffer()) |
b34efb62 | 453 | { |
454 | glEnable (GL_DEPTH_TEST); | |
455 | } | |
a174a3c5 | 456 | } |
2166f0fa | 457 | |
a174a3c5 | 458 | // ======================================================================= |
459 | // function : Render | |
460 | // purpose : | |
461 | // ======================================================================= | |
462 | void OpenGl_Text::Render (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
463 | const Handle(OpenGl_Context)& theCtx, | |
4b1c8733 | 464 | const OpenGl_AspectText& theTextAspect, |
465 | const unsigned int theResolution) const | |
a174a3c5 | 466 | { |
4b1c8733 | 467 | render (thePrintCtx, theCtx, theTextAspect, theTextAspect.Color(), theTextAspect.SubtitleColor(), theResolution); |
a174a3c5 | 468 | } |
2166f0fa | 469 | |
a174a3c5 | 470 | // ======================================================================= |
471 | // function : setupMatrix | |
472 | // purpose : | |
473 | // ======================================================================= | |
474 | void OpenGl_Text::setupMatrix (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
ca3c13d1 | 475 | const Handle(OpenGl_Context)& theCtx, |
a174a3c5 | 476 | const OpenGl_AspectText& theTextAspect, |
477 | const OpenGl_Vec3 theDVec) const | |
478 | { | |
c827ea3a | 479 | OpenGl_Mat4d aModViewMat; |
ce01ec26 | 480 | OpenGl_Mat4d aProjectMat; |
481 | ||
482 | if (myHasPlane) | |
483 | { | |
484 | aProjectMat = myProjMatrix * myOrientationMatrix; | |
485 | } | |
486 | else | |
487 | { | |
488 | aProjectMat = myProjMatrix; | |
489 | } | |
c827ea3a | 490 | |
a174a3c5 | 491 | if (myIs2d) |
bf75be98 | 492 | { |
825aa485 | 493 | Graphic3d_TransformUtils::Translate<GLdouble> (aModViewMat, myPoint.x() + theDVec.x(), myPoint.y() + theDVec.y(), 0.f); |
494 | Graphic3d_TransformUtils::Scale<GLdouble> (aModViewMat, 1.f, -1.f, 1.f); | |
495 | Graphic3d_TransformUtils::Rotate<GLdouble> (aModViewMat, theTextAspect.Angle(), 0.f, 0.f, 1.f); | |
2166f0fa SK |
496 | } |
497 | else | |
498 | { | |
a174a3c5 | 499 | // align coordinates to the nearest integer |
500 | // to avoid extra interpolation issues | |
501 | GLdouble anObjX, anObjY, anObjZ; | |
825aa485 | 502 | Graphic3d_TransformUtils::UnProject<Standard_Real> (std::floor (myWinX + theDVec.x()), |
503 | std::floor (myWinY + theDVec.y()), | |
504 | myWinZ + theDVec.z(), | |
505 | OpenGl_Mat4d::Map (THE_IDENTITY_MATRIX), | |
ce01ec26 | 506 | OpenGl_Mat4d::Map (aProjectMat), |
825aa485 | 507 | myViewport, |
508 | anObjX, | |
509 | anObjY, | |
510 | anObjZ); | |
511 | ||
ce01ec26 | 512 | if (myHasPlane) |
513 | { | |
514 | const gp_Dir& aVectorDir = myOrientation.XDirection(); | |
515 | const gp_Dir& aVectorUp = myOrientation.Direction(); | |
516 | const gp_Dir& aVectorRight = myOrientation.YDirection(); | |
517 | ||
518 | aModViewMat.SetColumn (3, OpenGl_Vec3d (anObjX, anObjY, anObjZ)); | |
519 | aModViewMat.SetColumn (2, OpenGl_Vec3d (aVectorUp.X(), aVectorUp.Y(), aVectorUp.Z())); | |
520 | aModViewMat.SetColumn (1, OpenGl_Vec3d (aVectorRight.X(), aVectorRight.Y(), aVectorRight.Z())); | |
521 | aModViewMat.SetColumn (0, OpenGl_Vec3d (aVectorDir.X(), aVectorDir.Y(), aVectorDir.Z())); | |
522 | } | |
523 | else | |
524 | { | |
525 | Graphic3d_TransformUtils::Translate<GLdouble> (aModViewMat, anObjX, anObjY, anObjZ); | |
526 | Graphic3d_TransformUtils::Rotate<GLdouble> (aModViewMat, theTextAspect.Angle(), 0.0, 0.0, 1.0); | |
527 | } | |
825aa485 | 528 | |
a174a3c5 | 529 | if (!theTextAspect.IsZoomable()) |
530 | { | |
531 | #ifdef _WIN32 | |
532 | // if the context has assigned printer context, use it's parameters | |
533 | if (!thePrintCtx.IsNull()) | |
534 | { | |
535 | // get printing scaling in x and y dimensions | |
536 | GLfloat aTextScalex = 1.0f, aTextScaley = 1.0f; | |
537 | thePrintCtx->GetScale (aTextScalex, aTextScaley); | |
538 | ||
539 | // text should be scaled in all directions with same | |
540 | // factor to save its proportions, so use height (y) scaling | |
541 | // as it is better for keeping text/3d graphics proportions | |
825aa485 | 542 | Graphic3d_TransformUtils::Scale<GLdouble> (aModViewMat, aTextScaley, aTextScaley, aTextScaley); |
a174a3c5 | 543 | } |
c85385c0 | 544 | #else |
545 | (void )thePrintCtx; | |
a174a3c5 | 546 | #endif |
825aa485 | 547 | Graphic3d_TransformUtils::Scale<GLdouble> (aModViewMat, myScaleHeight, myScaleHeight, myScaleHeight); |
a174a3c5 | 548 | } |
549 | } | |
c827ea3a | 550 | |
551 | theCtx->WorldViewState.SetCurrent<Standard_Real> (aModViewMat); | |
552 | theCtx->ApplyWorldViewMatrix(); | |
b990e557 | 553 | |
ce01ec26 | 554 | if (!myIs2d) |
555 | { | |
556 | theCtx->ProjectionState.SetCurrent<Standard_Real> (aProjectMat); | |
557 | theCtx->ApplyProjectionMatrix(); | |
558 | } | |
559 | ||
b990e557 | 560 | if (!theCtx->ActiveProgram().IsNull()) |
561 | { | |
562 | // Upload updated state to shader program | |
563 | theCtx->ShaderManager()->PushState (theCtx->ActiveProgram()); | |
564 | } | |
a174a3c5 | 565 | } |
566 | ||
567 | // ======================================================================= | |
568 | // function : drawText | |
569 | // purpose : | |
570 | // ======================================================================= | |
35e08fe8 | 571 | |
572 | void OpenGl_Text::drawText (const Handle(OpenGl_PrinterContext)& , | |
a174a3c5 | 573 | const Handle(OpenGl_Context)& theCtx, |
35e08fe8 | 574 | #ifdef HAVE_GL2PS |
a174a3c5 | 575 | const OpenGl_AspectText& theTextAspect) const |
35e08fe8 | 576 | #else |
577 | const OpenGl_AspectText& ) const | |
578 | #endif | |
a174a3c5 | 579 | { |
580 | #ifdef HAVE_GL2PS | |
581 | if (theCtx->IsFeedback()) | |
582 | { | |
583 | // position of the text and alignment is calculated by transformation matrix | |
584 | exportText (myString, myIs2d, theTextAspect, (Standard_Integer )myExportHeight); | |
585 | return; | |
2166f0fa | 586 | } |
a174a3c5 | 587 | #endif |
2166f0fa | 588 | |
7d3e64ef | 589 | if (myVertsVbo.Length() != myTextures.Length() |
590 | || myTextures.IsEmpty()) | |
2166f0fa | 591 | { |
7d3e64ef | 592 | return; |
2166f0fa | 593 | } |
7d3e64ef | 594 | |
595 | for (Standard_Integer anIter = 0; anIter < myTextures.Length(); ++anIter) | |
a174a3c5 | 596 | { |
7d3e64ef | 597 | const GLuint aTexId = myTextures.Value (anIter); |
598 | glBindTexture (GL_TEXTURE_2D, aTexId); | |
a174a3c5 | 599 | |
7d3e64ef | 600 | const Handle(OpenGl_VertexBuffer)& aVerts = myVertsVbo.Value (anIter); |
601 | const Handle(OpenGl_VertexBuffer)& aTCrds = myTCrdsVbo.Value (anIter); | |
602 | aVerts->BindAttribute (theCtx, Graphic3d_TOA_POS); | |
603 | aTCrds->BindAttribute (theCtx, Graphic3d_TOA_UV); | |
2166f0fa | 604 | |
7d3e64ef | 605 | glDrawArrays (GL_TRIANGLES, 0, GLsizei(aVerts->GetElemsNb())); |
2166f0fa | 606 | |
b990e557 | 607 | aTCrds->UnbindAttribute (theCtx, Graphic3d_TOA_UV); |
7d3e64ef | 608 | aVerts->UnbindAttribute (theCtx, Graphic3d_TOA_POS); |
a174a3c5 | 609 | } |
7d3e64ef | 610 | glBindTexture (GL_TEXTURE_2D, 0); |
a174a3c5 | 611 | } |
2166f0fa | 612 | |
a174a3c5 | 613 | // ======================================================================= |
614 | // function : FontKey | |
615 | // purpose : | |
616 | // ======================================================================= | |
617 | TCollection_AsciiString OpenGl_Text::FontKey (const OpenGl_AspectText& theAspect, | |
4b1c8733 | 618 | const Standard_Integer theHeight, |
619 | const unsigned int theResolution) | |
a174a3c5 | 620 | { |
621 | const Font_FontAspect anAspect = (theAspect.FontAspect() != Font_FA_Undefined) ? theAspect.FontAspect() : Font_FA_Regular; | |
622 | return theAspect.FontName() | |
623 | + TCollection_AsciiString(":") + Standard_Integer(anAspect) | |
4b1c8733 | 624 | + TCollection_AsciiString(":") + Standard_Integer(theResolution) |
a174a3c5 | 625 | + TCollection_AsciiString(":") + theHeight; |
626 | } | |
627 | ||
628 | // ======================================================================= | |
629 | // function : FindFont | |
630 | // purpose : | |
631 | // ======================================================================= | |
632 | Handle(OpenGl_Font) OpenGl_Text::FindFont (const Handle(OpenGl_Context)& theCtx, | |
633 | const OpenGl_AspectText& theAspect, | |
634 | const Standard_Integer theHeight, | |
4b1c8733 | 635 | const unsigned int theResolution, |
a174a3c5 | 636 | const TCollection_AsciiString theKey) |
637 | { | |
638 | Handle(OpenGl_Font) aFont; | |
639 | if (theHeight < 2) | |
2166f0fa | 640 | { |
a174a3c5 | 641 | return aFont; // invalid parameters |
642 | } | |
2166f0fa | 643 | |
a174a3c5 | 644 | if (!theCtx->GetResource (theKey, aFont)) |
645 | { | |
646 | Handle(Font_FontMgr) aFontMgr = Font_FontMgr::GetInstance(); | |
647 | const Handle(TCollection_HAsciiString) aFontName = new TCollection_HAsciiString (theAspect.FontName()); | |
648 | const Font_FontAspect anAspect = (theAspect.FontAspect() != Font_FA_Undefined) ? theAspect.FontAspect() : Font_FA_Regular; | |
649 | Handle(Font_SystemFont) aRequestedFont = aFontMgr->FindFont (aFontName, anAspect, theHeight); | |
65360da3 | 650 | Handle(Font_FTFont) aFontFt; |
651 | if (!aRequestedFont.IsNull()) | |
2166f0fa | 652 | { |
65360da3 | 653 | aFontFt = new Font_FTFont (NULL); |
317d68c9 | 654 | |
4b1c8733 | 655 | if (aFontFt->Init (aRequestedFont->FontPath()->ToCString(), theHeight, theResolution)) |
65360da3 | 656 | { |
657 | aFont = new OpenGl_Font (aFontFt, theKey); | |
658 | if (!aFont->Init (theCtx)) | |
659 | { | |
660 | TCollection_ExtendedString aMsg; | |
661 | aMsg += "Font '"; | |
662 | aMsg += theAspect.FontName(); | |
663 | aMsg += "' - initialization of GL resources has failed!"; | |
3b523c4c | 664 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
65360da3 | 665 | aFontFt.Nullify(); |
c6ad5e5f | 666 | aFont->Release (theCtx.operator->()); |
65360da3 | 667 | aFont = new OpenGl_Font (aFontFt, theKey); |
668 | } | |
669 | } | |
670 | else | |
671 | { | |
672 | TCollection_ExtendedString aMsg; | |
673 | aMsg += "Font '"; | |
674 | aMsg += theAspect.FontName(); | |
675 | aMsg += "' is broken or has incompatible format! File path: "; | |
676 | aMsg += aRequestedFont->FontPath()->ToCString(); | |
3b523c4c | 677 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
65360da3 | 678 | aFontFt.Nullify(); |
679 | aFont = new OpenGl_Font (aFontFt, theKey); | |
680 | } | |
a174a3c5 | 681 | } |
65360da3 | 682 | else |
a174a3c5 | 683 | { |
65360da3 | 684 | TCollection_ExtendedString aMsg; |
685 | aMsg += "Font '"; | |
686 | aMsg += theAspect.FontName(); | |
687 | aMsg += "' is not found in the system!"; | |
3b523c4c | 688 | theCtx->PushMessage (GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_ERROR, 0, GL_DEBUG_SEVERITY_HIGH, aMsg); |
65360da3 | 689 | aFont = new OpenGl_Font (aFontFt, theKey); |
a174a3c5 | 690 | } |
a174a3c5 | 691 | |
b34efb62 | 692 | theCtx->ShareResource (theKey, aFont); |
a174a3c5 | 693 | } |
694 | return aFont; | |
695 | } | |
696 | ||
697 | // ======================================================================= | |
698 | // function : render | |
699 | // purpose : | |
700 | // ======================================================================= | |
701 | void OpenGl_Text::render (const Handle(OpenGl_PrinterContext)& thePrintCtx, | |
702 | const Handle(OpenGl_Context)& theCtx, | |
703 | const OpenGl_AspectText& theTextAspect, | |
704 | const TEL_COLOUR& theColorText, | |
4b1c8733 | 705 | const TEL_COLOUR& theColorSubs, |
706 | const unsigned int theResolution) const | |
a174a3c5 | 707 | { |
708 | if (myString.IsEmpty()) | |
709 | { | |
710 | return; | |
711 | } | |
712 | ||
4b1c8733 | 713 | // Note that using difference resolution in different Views in same Viewer |
714 | // will lead to performance regression (for example, text will be recreated every time). | |
715 | const TCollection_AsciiString aFontKey = FontKey (theTextAspect, myParams.Height, theResolution); | |
a174a3c5 | 716 | if (!myFont.IsNull() |
717 | && !myFont->ResourceKey().IsEqual (aFontKey)) | |
718 | { | |
719 | // font changed | |
10b9c7df | 720 | const_cast<OpenGl_Text* > (this)->Release (theCtx.operator->()); |
a174a3c5 | 721 | } |
722 | ||
723 | if (myFont.IsNull()) | |
724 | { | |
4b1c8733 | 725 | myFont = FindFont (theCtx, theTextAspect, myParams.Height, theResolution, aFontKey); |
65360da3 | 726 | } |
727 | if (!myFont->WasInitialized()) | |
728 | { | |
729 | return; | |
a174a3c5 | 730 | } |
731 | ||
732 | if (myTextures.IsEmpty()) | |
733 | { | |
317d68c9 | 734 | Font_TextFormatter aFormatter; |
a174a3c5 | 735 | aFormatter.SetupAlignment (myParams.HAlign, myParams.VAlign); |
736 | aFormatter.Reset(); | |
317d68c9 | 737 | |
738 | aFormatter.Append (myString, *myFont->FTFont()); | |
a174a3c5 | 739 | aFormatter.Format(); |
740 | ||
317d68c9 | 741 | OpenGl_TextBuilder aBuilder; |
742 | aBuilder.Perform (aFormatter, | |
743 | theCtx, | |
744 | *myFont.operator->(), | |
745 | myTextures, | |
746 | myVertsVbo, | |
747 | myTCrdsVbo); | |
748 | ||
a174a3c5 | 749 | aFormatter.BndBox (myBndBox); |
750 | } | |
751 | ||
752 | if (myTextures.IsEmpty()) | |
753 | { | |
754 | return; | |
755 | } | |
756 | ||
757 | myExportHeight = 1.0f; | |
758 | myScaleHeight = 1.0f; | |
759 | ||
c827ea3a | 760 | theCtx->WorldViewState.Push(); |
761 | ||
c827ea3a | 762 | myModelMatrix.Convert (theCtx->WorldViewState.Current() * theCtx->ModelWorldState.Current()); |
763 | ||
a174a3c5 | 764 | if (!myIs2d) |
765 | { | |
a174a3c5 | 766 | glGetIntegerv (GL_VIEWPORT, myViewport); |
c827ea3a | 767 | |
825aa485 | 768 | Graphic3d_TransformUtils::Project<Standard_Real> (myPoint.x(), |
769 | myPoint.y(), | |
770 | myPoint.z(), | |
771 | myModelMatrix, | |
772 | myProjMatrix, | |
773 | myViewport, | |
774 | myWinX, | |
775 | myWinY, | |
776 | myWinZ); | |
a174a3c5 | 777 | |
778 | // compute scale factor for constant text height | |
779 | GLdouble x1, y1, z1; | |
825aa485 | 780 | Graphic3d_TransformUtils::UnProject<Standard_Real> (myWinX, |
781 | myWinY, | |
782 | myWinZ, | |
783 | OpenGl_Mat4d::Map (THE_IDENTITY_MATRIX), | |
784 | myProjMatrix, | |
785 | myViewport, | |
786 | x1, | |
787 | y1, | |
788 | z1); | |
a174a3c5 | 789 | |
790 | GLdouble x2, y2, z2; | |
791 | const GLdouble h = (GLdouble )myFont->FTFont()->PointSize(); | |
825aa485 | 792 | Graphic3d_TransformUtils::UnProject<Standard_Real> (myWinX, |
793 | myWinY + h, | |
794 | myWinZ, | |
795 | OpenGl_Mat4d::Map (THE_IDENTITY_MATRIX), | |
796 | myProjMatrix, | |
797 | myViewport, | |
798 | x2, | |
799 | y2, | |
800 | z2); | |
a174a3c5 | 801 | |
802 | myScaleHeight = (y2 - y1) / h; | |
803 | if (theTextAspect.IsZoomable()) | |
804 | { | |
805 | myExportHeight = (float )h; | |
806 | } | |
807 | } | |
808 | myExportHeight = (float )myFont->FTFont()->PointSize() / myExportHeight; | |
809 | ||
b990e557 | 810 | #if !defined(GL_ES_VERSION_2_0) |
65360da3 | 811 | if (theCtx->core11 != NULL) |
812 | { | |
813 | glDisable (GL_LIGHTING); | |
814 | } | |
815 | #endif | |
a174a3c5 | 816 | |
817 | // setup depth test | |
eae454e3 | 818 | if (myIs2d |
819 | || theTextAspect.StyleType() == Aspect_TOST_ANNOTATION) | |
a174a3c5 | 820 | { |
821 | glDisable (GL_DEPTH_TEST); | |
822 | } | |
823 | ||
65360da3 | 824 | if (theCtx->core15fwd != NULL) |
a174a3c5 | 825 | { |
65360da3 | 826 | theCtx->core15fwd->glActiveTexture (GL_TEXTURE0); |
a174a3c5 | 827 | } |
65360da3 | 828 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 829 | // activate texture unit |
65360da3 | 830 | GLint aTexEnvParam = GL_REPLACE; |
831 | if (theCtx->core11 != NULL) | |
a174a3c5 | 832 | { |
c6ad5e5f | 833 | // setup alpha test |
834 | glAlphaFunc (GL_GEQUAL, 0.285f); | |
835 | glEnable (GL_ALPHA_TEST); | |
836 | ||
65360da3 | 837 | glDisable (GL_TEXTURE_1D); |
838 | glEnable (GL_TEXTURE_2D); | |
839 | glGetTexEnviv (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, &aTexEnvParam); | |
840 | if (aTexEnvParam != GL_REPLACE) | |
841 | { | |
842 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); | |
843 | } | |
a174a3c5 | 844 | } |
65360da3 | 845 | #endif |
846 | ||
847 | // setup blending | |
848 | glEnable (GL_BLEND); | |
849 | glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); | |
a174a3c5 | 850 | |
851 | // extra drawings | |
852 | switch (theTextAspect.DisplayType()) | |
853 | { | |
2166f0fa | 854 | case Aspect_TODT_BLEND: |
a174a3c5 | 855 | { |
65360da3 | 856 | #if !defined(GL_ES_VERSION_2_0) |
a174a3c5 | 857 | glEnable (GL_COLOR_LOGIC_OP); |
858 | glLogicOp (GL_XOR); | |
65360da3 | 859 | #endif |
2166f0fa | 860 | break; |
a174a3c5 | 861 | } |
2166f0fa SK |
862 | case Aspect_TODT_SUBTITLE: |
863 | { | |
65360da3 | 864 | #if !defined(GL_ES_VERSION_2_0) |
865 | if (theCtx->core11 != NULL) | |
866 | { | |
867 | theCtx->core11->glColor3fv (theColorSubs.rgb); | |
868 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (0.0f, 0.0f, 0.00001f)); | |
869 | ||
870 | glBindTexture (GL_TEXTURE_2D, 0); | |
871 | glBegin (GL_QUADS); | |
872 | glVertex2f (myBndBox.Left, myBndBox.Top); | |
873 | glVertex2f (myBndBox.Right, myBndBox.Top); | |
874 | glVertex2f (myBndBox.Right, myBndBox.Bottom); | |
875 | glVertex2f (myBndBox.Left, myBndBox.Bottom); | |
876 | glEnd(); | |
877 | } | |
878 | #endif | |
2166f0fa SK |
879 | break; |
880 | } | |
2166f0fa | 881 | case Aspect_TODT_DEKALE: |
a174a3c5 | 882 | { |
b990e557 | 883 | theCtx->SetColor4fv (*(const OpenGl_Vec4* )theColorSubs.rgb); |
a174a3c5 | 884 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (+1.0f, +1.0f, 0.00001f)); |
885 | drawText (thePrintCtx, theCtx, theTextAspect); | |
886 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (-1.0f, -1.0f, 0.00001f)); | |
887 | drawText (thePrintCtx, theCtx, theTextAspect); | |
888 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (-1.0f, +1.0f, 0.00001f)); | |
889 | drawText (thePrintCtx, theCtx, theTextAspect); | |
890 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (+1.0f, -1.0f, 0.00001f)); | |
891 | drawText (thePrintCtx, theCtx, theTextAspect); | |
892 | break; | |
893 | } | |
a6eb515f | 894 | case Aspect_TODT_DIMENSION: |
a174a3c5 | 895 | case Aspect_TODT_NORMAL: |
896 | { | |
2166f0fa SK |
897 | break; |
898 | } | |
899 | } | |
900 | ||
a174a3c5 | 901 | // main draw call |
b990e557 | 902 | theCtx->SetColor4fv (*(const OpenGl_Vec4* )theColorText.rgb); |
a174a3c5 | 903 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (0.0f, 0.0f, 0.0f)); |
904 | drawText (thePrintCtx, theCtx, theTextAspect); | |
2166f0fa | 905 | |
ce01ec26 | 906 | if (!myIs2d) |
907 | { | |
908 | theCtx->ProjectionState.SetCurrent<Standard_Real> (myProjMatrix); | |
909 | theCtx->ApplyProjectionMatrix(); | |
910 | } | |
911 | ||
65360da3 | 912 | #if !defined(GL_ES_VERSION_2_0) |
913 | if (theCtx->core11 != NULL) | |
914 | { | |
915 | glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, aTexEnvParam); | |
916 | } | |
917 | #endif | |
543f0db0 | 918 | |
919 | if (theTextAspect.DisplayType() == Aspect_TODT_DIMENSION) | |
920 | { | |
921 | setupMatrix (thePrintCtx, theCtx, theTextAspect, OpenGl_Vec3 (0.0f, 0.0f, 0.00001f)); | |
922 | ||
923 | glDisable (GL_BLEND); | |
543f0db0 | 924 | if (!myIs2d) |
925 | { | |
926 | glDisable (GL_DEPTH_TEST); | |
927 | } | |
65360da3 | 928 | #if !defined(GL_ES_VERSION_2_0) |
929 | if (theCtx->core11 != NULL) | |
930 | { | |
931 | glDisable (GL_TEXTURE_2D); | |
932 | glDisable (GL_ALPHA_TEST); | |
933 | } | |
934 | #endif | |
543f0db0 | 935 | glColorMask (GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE); |
936 | ||
937 | glClear (GL_STENCIL_BUFFER_BIT); | |
938 | glEnable (GL_STENCIL_TEST); | |
939 | glStencilFunc (GL_ALWAYS, 1, 0xFF); | |
940 | glStencilOp (GL_KEEP, GL_KEEP, GL_REPLACE); | |
941 | ||
65360da3 | 942 | #if !defined(GL_ES_VERSION_2_0) |
943 | if (theCtx->core11 != NULL) | |
944 | { | |
945 | glBegin (GL_QUADS); | |
946 | glVertex2f (myBndBox.Left, myBndBox.Top); | |
947 | glVertex2f (myBndBox.Right, myBndBox.Top); | |
948 | glVertex2f (myBndBox.Right, myBndBox.Bottom); | |
949 | glVertex2f (myBndBox.Left, myBndBox.Bottom); | |
950 | glEnd(); | |
951 | } | |
952 | #endif | |
543f0db0 | 953 | |
954 | glStencilFunc (GL_ALWAYS, 0, 0xFF); | |
543f0db0 | 955 | |
956 | glColorMask (GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); | |
957 | } | |
958 | ||
b34efb62 | 959 | // reset OpenGL state |
960 | glDisable (GL_BLEND); | |
b34efb62 | 961 | glDisable (GL_STENCIL_TEST); |
65360da3 | 962 | #if !defined(GL_ES_VERSION_2_0) |
c6ad5e5f | 963 | if (theCtx->core11 != NULL) |
964 | { | |
965 | glDisable (GL_ALPHA_TEST); | |
966 | } | |
b34efb62 | 967 | glDisable (GL_COLOR_LOGIC_OP); |
65360da3 | 968 | #endif |
c827ea3a | 969 | |
970 | // model view matrix was modified | |
971 | theCtx->WorldViewState.Pop(); | |
972 | theCtx->ApplyModelViewMatrix(); | |
5e27df78 | 973 | } |