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0024291: Visualization - move Z-buffer trihedron presentation from TKOpenGl to TKV3d
[occt.git] / src / OpenGl / OpenGl_GraduatedTrihedron.cxx
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b311480e 1// Created on: 2011-09-20
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
5f8b738e 16#include <OpenGl_GlCore11.hxx>
7fd59977 17
c827ea3a 18#include <OpenGl_GraduatedTrihedron.hxx>
a79f67f8 19
20#include <Graphic3d_ArrayOfPolylines.hxx>
21#include <Graphic3d_ArrayOfSegments.hxx>
c04c30b3 22#include <Graphic3d_GraphicDriver.hxx>
825aa485 23#include <Graphic3d_TransformPers.hxx>
24#include <Graphic3d_TransformUtils.hxx>
a79f67f8 25#include <gp_Ax3.hxx>
26#include <OpenGl_AspectLine.hxx>
2166f0fa
SK		 27#include <OpenGl_Workspace.hxx>
28#include <OpenGl_View.hxx>
a79f67f8 29#include <Precision.hxx>
7fd59977 30
c04c30b3 31#ifndef _WIN32
32 #include <string.h>
33#endif
34
536d98e2 35namespace
36{
37 static const OpenGl_TextParam THE_LABEL_PARAMS =
38 {
39 16, Graphic3d_HTA_LEFT, Graphic3d_VTA_BOTTOM
40 };
41}
42
a79f67f8 43// =======================================================================
44// function : Constructor
45// purpose :
46// =======================================================================
536d98e2 47OpenGl_GraduatedTrihedron::OpenGl_GraduatedTrihedron()
a79f67f8 48: myMin (0.0f, 0.0f, 0.0f),
c357e426 49 myMax (100.0f, 100.0f, 100.0f),
50 myIsInitialized (Standard_False)
536d98e2 51{
52 //
53}
54
55// =======================================================================
56// function : SetValues
57// purpose :
58// =======================================================================
c357e426 59void OpenGl_GraduatedTrihedron::SetValues (const Graphic3d_GraduatedTrihedron& theData)
a174a3c5 60{
c357e426 61 myData = theData;
62 myIsInitialized = Standard_False;
7fd59977 63}
64
a79f67f8 65// =======================================================================
66// function : Destructor
67// purpose :
68// =======================================================================
69OpenGl_GraduatedTrihedron::~OpenGl_GraduatedTrihedron()
7fd59977 70{
a79f67f8 71 //
7fd59977 72}
73
a174a3c5 74// =======================================================================
75// function : Release
76// purpose :
77// =======================================================================
10b9c7df 78void OpenGl_GraduatedTrihedron::Release (OpenGl_Context* theCtx)
7fd59977 79{
a79f67f8 80 myAxes[0].Release (theCtx);
81 myAxes[1].Release (theCtx);
82 myAxes[2].Release (theCtx);
a174a3c5 83 myLabelValues.Release (theCtx);
7fd59977 84}
85
c357e426 86// =======================================================================
87// function : initResources
88// purpose :
89// =======================================================================
90void OpenGl_GraduatedTrihedron::initGlResources (const Handle(OpenGl_Context)& theCtx) const
91{
92 myAxes[0].Release (theCtx.operator->());
93 myAxes[1].Release (theCtx.operator->());
94 myAxes[2].Release (theCtx.operator->());
95 myLabelValues.Release (theCtx.operator->());
96
97 // Initialize text label parameters for x, y, and z axes
98 myAxes[0] = Axis (myData.XAxisAspect(), OpenGl_Vec3 (1.0f, 0.0f, 0.0f));
99 myAxes[1] = Axis (myData.YAxisAspect(), OpenGl_Vec3 (0.0f, 1.0f, 0.0f));
100 myAxes[2] = Axis (myData.ZAxisAspect(), OpenGl_Vec3 (0.0f, 0.0f, 1.0f));
101
102 // Initialize constant primitives: text, arrows.
103 myAxes[0].InitArrow (theCtx, myData.ArrowsLength(), OpenGl_Vec3 (0.0f, 0.0f, 1.0f));
104 myAxes[1].InitArrow (theCtx, myData.ArrowsLength(), OpenGl_Vec3 (0.0f, 0.0f, 1.0f));
105 myAxes[2].InitArrow (theCtx, myData.ArrowsLength(), OpenGl_Vec3 (1.0f, 0.0f, 0.0f));
106 for (Standard_Integer anIt = 0; anIt < 3; ++anIt)
107 {
108 myAxes[anIt].Label.SetFontSize (theCtx, myData.NamesSize());
109 }
110
111 myLabelValues.SetFontSize (theCtx, myData.ValuesSize());
112
b6472664 113 myAspectLabels.Aspect()->SetTextFontAspect (myData.NamesFontAspect());
114 myAspectLabels.Aspect()->SetFont (myData.NamesFont());
c357e426 115
b6472664 116 myAspectValues.Aspect()->SetTextFontAspect (myData.ValuesFontAspect());
117 myAspectValues.Aspect()->SetFont (myData.ValuesFont());
c357e426 118
119 // Grid aspect
b6472664 120 myGridLineAspect.Aspect()->SetColor (myData.GridColor());
c357e426 121}
122
a79f67f8 123// =======================================================================
124// method : getNormal
125// purpose : Normal of the view (not normalized!)
126// =======================================================================
127Standard_ShortReal OpenGl_GraduatedTrihedron::getNormal (const Handle(OpenGl_Context)& theContext,
128 OpenGl_Vec3& theNormal) const
7fd59977 129{
3bffef55 130 const Standard_Integer* aViewport = theContext->Viewport();
a79f67f8 131
132 OpenGl_Mat4 aModelMatrix;
133 OpenGl_Mat4 aProjMatrix;
134 aModelMatrix.Convert (theContext->ModelWorldState.Current() * theContext->WorldViewState.Current());
135 aProjMatrix .Convert (theContext->ProjectionState.Current());
136
137 OpenGl_Vec3 aPoint1, aPoint2, aPoint3;
825aa485 138 Graphic3d_TransformUtils::UnProject<Standard_ShortReal> ((Standard_ShortReal) aViewport[0],
139 (Standard_ShortReal) aViewport[1],
140 0.0f,
141 aModelMatrix, aProjMatrix, aViewport,
142 aPoint1.x(), aPoint1.y(), aPoint1.z());
143
144 Graphic3d_TransformUtils::UnProject<Standard_ShortReal> ((Standard_ShortReal) (aViewport[0] + aViewport[2]),
145 (Standard_ShortReal) aViewport[1],
146 0.0f,
147 aModelMatrix, aProjMatrix, aViewport,
148 aPoint2.x(), aPoint2.y(), aPoint2.z());
149
150 Graphic3d_TransformUtils::UnProject<Standard_ShortReal> ((Standard_ShortReal) aViewport[0],
151 (Standard_ShortReal) (aViewport[1] + aViewport[3]),
152 0.0f,
153 aModelMatrix, aProjMatrix, aViewport,
154 aPoint3.x(), aPoint3.y(), aPoint3.z());
a79f67f8 155
156 const OpenGl_Vec3 aD1 = aPoint3 - aPoint1;
157 const OpenGl_Vec3 aD2 = aPoint2 - aPoint1;
158 theNormal = OpenGl_Vec3::Cross (aD1, aD2);
159
160 // Distance corresponding to 1 pixel
161 return aD2.Modulus() / (float) aViewport[2];
a174a3c5 162}
163
a79f67f8 164// =======================================================================
165// method : getDistancetoCorner
166// purpose :
167// =======================================================================
168Standard_ShortReal OpenGl_GraduatedTrihedron::getDistanceToCorner (const OpenGl_Vec3& theNormal,
169 const OpenGl_Vec3& theCenter,
170 const Standard_ShortReal theX,
171 const Standard_ShortReal theY,
172 const Standard_ShortReal theZ) const
a174a3c5 173{
a79f67f8 174 return theNormal.x() * (theX - theCenter.x())
175 + theNormal.y() * (theY - theCenter.y())
176 + theNormal.z() * (theZ - theCenter.z());
2166f0fa 177}
13a22457 178
a79f67f8 179// =======================================================================
180// method : getGridAxes
181// purpose :
182// =======================================================================
183Standard_ExtCharacter OpenGl_GraduatedTrihedron::getGridAxes (const Standard_ShortReal theCorners[8],
184 GridAxes& theGridAxes) const
2166f0fa 185{
a79f67f8 186 // Find the farest corner
187 Standard_Byte aMaxIndex = 0;
188 Standard_ShortReal aMax = theCorners[aMaxIndex] > 0.0f ? theCorners[aMaxIndex] : 0.0f;
189
190 for (Standard_Byte anIt = 0; anIt < 8; ++anIt)
13a22457 191 {
a79f67f8 192 if (theCorners[anIt] > aMax)
13a22457 193 {
a79f67f8 194 aMax = theCorners[anIt];
195 aMaxIndex = anIt;
13a22457
S		 196 }
197 }
198
a79f67f8 199 switch (aMaxIndex)
13a22457 200 {
a79f67f8 201 case 0: // (0,0,0)
13a22457 202 {
a79f67f8 203 theGridAxes.Origin = OpenGl_Vec3 (myMin.x(), myMin.y(), myMin.z());
204 theGridAxes.Axes[0] = OpenGl_Vec3 (1.0f, 0.0f, 0.0f);
205 theGridAxes.Axes[1] = OpenGl_Vec3 (0.0f, 1.0f, 0.0f);
206 theGridAxes.Axes[2] = OpenGl_Vec3 (0.0f, 0.0f, 1.0f);
207
208 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMax.z());
209 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMin.z());
210 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMin.z());
211
212 return OOZ_XOZ | OYO_XYO |
213 XOO_XYO | OOZ_OYZ |
214 XOO_XOZ | OYO_OYZ;
13a22457 215 }
a79f67f8 216 case 1: // (0,0,1)
13a22457 217 {
a79f67f8 218 theGridAxes.Origin = OpenGl_Vec3 (myMin.x(), myMin.y(), myMax.z());
219 theGridAxes.Axes[0] = OpenGl_Vec3 (1.0f, 0.0f, 0.0f);
220 theGridAxes.Axes[1] = OpenGl_Vec3 (0.0f, 1.0f, 0.0f);
221 theGridAxes.Axes[2] = OpenGl_Vec3 (0.0f, 0.0f, -1.0f);
222
223 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMin.z());
224 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMin.z());
225 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMax.z());
226
227 return OOZ_XOZ | OYZ_XYZ |
228 OOZ_OYZ | XOZ_XYZ |
229 XOO_XOZ | OYO_OYZ;
13a22457 230 }
a79f67f8 231 case 2: // (0,1,0)
13a22457 232 {
a79f67f8 233 theGridAxes.Origin = OpenGl_Vec3 (myMin.x(), myMax.y(), myMin.z());
234 theGridAxes.Axes[0] = OpenGl_Vec3 (1.0f, 0.0f, 0.0f);
235 theGridAxes.Axes[1] = OpenGl_Vec3 (0.0f, -1.0f, 0.0f);
236 theGridAxes.Axes[2] = OpenGl_Vec3 (0.0f, 0.0f, 1.0f);
237
238 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMin.z());
239 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMax.x(), myMax.y(), myMin.z());
240 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMax.x(), myMax.y(), myMin.z());
241
242 return OYO_XYO | OYZ_XYZ |
243 XOO_XYO | OOZ_OYZ |
244 XYO_XYZ | OYO_OYZ;
13a22457 245 }
a79f67f8 246 case 3: // (0,1,1)
13a22457 247 {
a79f67f8 248 theGridAxes.Origin = OpenGl_Vec3 (myMin.x(), myMax.y(), myMax.z());
249 theGridAxes.Axes[0] = OpenGl_Vec3 (1.0f, 0.0f, 0.0f);
250 theGridAxes.Axes[1] = OpenGl_Vec3 (0.0f, -1.0f, 0.0f);
251 theGridAxes.Axes[2] = OpenGl_Vec3 (0.0f, 0.0f, -1.0f);
252
253 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMax.z());
254 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMin.x(), myMax.y(), myMin.z());
255 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMax.z());
256
257 return OOZ_XOZ | OYZ_XYZ | OYO_XYO |
258 OOZ_OYZ | XOZ_XYZ |
259 OYO_OYZ | XYO_XYZ;
13a22457 260 }
a79f67f8 261 case 4: // (1,0,0)
13a22457 262 {
a79f67f8 263 theGridAxes.Origin = OpenGl_Vec3 (myMax.x(), myMin.y(), myMin.z());
264 theGridAxes.Axes[0] = OpenGl_Vec3 (-1, 0, 0);
265 theGridAxes.Axes[1] = OpenGl_Vec3 (0, 1, 0);
266 theGridAxes.Axes[2] = OpenGl_Vec3 (0, 0, 1);
267
268 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMax.z());
269 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMin.z());
270 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMin.z());
271
272 return OOZ_XOZ | OYO_XYO |
273 XOO_XYO | XOZ_XYZ |
274 XOO_XOZ | XYO_XYZ;
13a22457 275 }
a79f67f8 276 case 5: // (1,0,1)
13a22457 277 {
a79f67f8 278 theGridAxes.Origin = OpenGl_Vec3 (myMax.x(), myMin.y(), myMax.z());
279 theGridAxes.Axes[0] = OpenGl_Vec3 (-1, 0, 0);
280 theGridAxes.Axes[1] = OpenGl_Vec3 (0, 1, 0);
281 theGridAxes.Axes[2] = OpenGl_Vec3 (0, 0, -1);
282
283 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMin.z());
284 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMin.z());
285 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMin.x(), myMin.y(), myMax.z());
286
287 return OOZ_XOZ | OYZ_XYZ |
288 XOO_XYO | XOZ_XYZ | OOZ_OYZ |
289 XOO_XOZ | XYO_XYZ;
13a22457 290 }
a79f67f8 291 case 6: // (1,1,0)
13a22457 292 {
a79f67f8 293 theGridAxes.Origin = OpenGl_Vec3 (myMax.x(), myMax.y(), myMin.z());
294 theGridAxes.Axes[0] = OpenGl_Vec3 (-1, 0, 0);
295 theGridAxes.Axes[1] = OpenGl_Vec3 (0, -1, 0);
296 theGridAxes.Axes[2] = OpenGl_Vec3 (0, 0, 1);
297
298 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMin.z());
299 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMin.x(), myMax.y(), myMin.z());
300 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMin.z());
301
302 return OYO_XYO | OYZ_XYZ |
303 XOO_XYO | XOZ_XYZ |
304 XOO_XOZ | XYO_XYZ | OYO_OYZ;
13a22457 305 }
a79f67f8 306 case 7: // (1,1,1)
307 default:
13a22457 308 {
a79f67f8 309 theGridAxes.Origin = OpenGl_Vec3 (myMax.x(), myMax.y(), myMax.z());
310 theGridAxes.Axes[0] = OpenGl_Vec3 (-1, 0, 0);
311 theGridAxes.Axes[1] = OpenGl_Vec3 (0, -1, 0);
312 theGridAxes.Axes[2] = OpenGl_Vec3 (0, 0, -1);
313
314 theGridAxes.Ticks[0] = OpenGl_Vec3 (myMax.x(), myMax.y(), myMin.z());
315 theGridAxes.Ticks[1] = OpenGl_Vec3 (myMax.x(), myMax.y(), myMin.z());
316 theGridAxes.Ticks[2] = OpenGl_Vec3 (myMax.x(), myMin.y(), myMax.z());
317
318 return OYO_XYO | OYZ_XYZ | OOZ_XOZ |
319 XOO_XYO | XOZ_XYZ | OOZ_OYZ |
320 XOO_XOZ | XYO_XYZ | OYO_OYZ;
13a22457 321 }
a79f67f8 322 }
323}
324
325// =======================================================================
326// function : renderLine
327// purpose :
328// =======================================================================
536d98e2 329void OpenGl_GraduatedTrihedron::renderLine (const OpenGl_PrimitiveArray& theLine,
a79f67f8 330 const Handle(OpenGl_Workspace)& theWorkspace,
331 const OpenGl_Mat4& theMat,
332 const Standard_ShortReal theXt,
333 const Standard_ShortReal theYt,
334 const Standard_ShortReal theZt) const
335{
336 const Handle(OpenGl_Context)& aContext = theWorkspace->GetGlContext();
337 OpenGl_Mat4 aMat (theMat);
825aa485 338 Graphic3d_TransformUtils::Translate (aMat, theXt, theYt, theZt);
a79f67f8 339 aContext->WorldViewState.SetCurrent (aMat);
340 aContext->ApplyWorldViewMatrix();
536d98e2 341 theLine.Render (theWorkspace);
a79f67f8 342}
343
344// =======================================================================
345// function : renderGridPlane
346// purpose :
347// =======================================================================
348void OpenGl_GraduatedTrihedron::renderGridPlane (const Handle(OpenGl_Workspace)& theWorkspace,
349 const Standard_Integer& theIndex,
350 const GridAxes& theGridAxes,
351 OpenGl_Mat4& theMat) const
352{
353 const Graphic3d_AxisAspect& aCurAspect = myData.AxisAspect (theIndex);
536d98e2 354 if (aCurAspect.TickmarksNumber() <= 0)
a79f67f8 355 {
356 return;
357 }
358
359 const Handle(OpenGl_Context)& aContext = theWorkspace->GetGlContext();
360
361 Standard_ShortReal aStep = theGridAxes.Axes[theIndex].GetData()[theIndex]
536d98e2 362 * (myMax.GetData()[theIndex] - myMin.GetData()[theIndex]) / aCurAspect.TickmarksNumber();
13a22457 363
a79f67f8 364 // NOTE:
536d98e2 365 // Get two other axes directions and draw lines Axis.TickmarksNumber times.
a79f67f8 366 // Combining together from three axes, these lines will make a grid.
367 for (Standard_Integer anIter = 1; anIter <= 2; ++anIter)
368 {
369 OpenGl_Mat4 aMat (theMat);
370 const Standard_Integer anIndex = (theIndex + anIter) % 3;
371 const Axis& anAxis = myAxes[anIndex];
372 OpenGl_Vec3 aStart (theGridAxes.Origin);
373 if (theGridAxes.Axes[anIndex].GetData()[anIndex] < 0.0)
13a22457 374 {
a79f67f8 375 aStart.ChangeData()[anIndex] = myMin.GetData()[anIndex];
13a22457 376 }
a79f67f8 377
825aa485 378 Graphic3d_TransformUtils::Translate (aMat, aStart.x(), aStart.y(), aStart.z());
a79f67f8 379 aContext->WorldViewState.SetCurrent (aMat);
380 aContext->ApplyWorldViewMatrix();
381
382 const OpenGl_Vec3 aStepVec (myAxes[theIndex].Direction * aStep);
536d98e2 383 for (Standard_Integer anIt = myData.ToDrawAxes() ? 1 : 0; anIt < aCurAspect.TickmarksNumber(); ++anIt)
13a22457 384 {
825aa485 385 Graphic3d_TransformUtils::Translate (aMat, aStepVec.x(), aStepVec.y(), aStepVec.z());
a79f67f8 386 aContext->WorldViewState.SetCurrent (aMat);
387 aContext->ApplyWorldViewMatrix();
536d98e2 388 anAxis.Line.Render (theWorkspace);
13a22457 389 }
a79f67f8 390 }
391}
392
393// =======================================================================
394// function : renderAxis
395// purpose :
396// =======================================================================
397void OpenGl_GraduatedTrihedron::renderAxis (const Handle(OpenGl_Workspace)& theWorkspace,
398 const Standard_Integer& theIndex,
399 const OpenGl_Mat4& theMat) const
400{
401 const Axis& anAxis = myAxes[theIndex];
402
403 theWorkspace->SetAspectLine (&anAxis.LineAspect);
404 const Handle(OpenGl_Context)& aContext = theWorkspace->GetGlContext();
405
406 // Reset transformations
407 aContext->WorldViewState.SetCurrent (theMat);
408 aContext->ApplyWorldViewMatrix();
409
410 // Render arrow
a79f67f8 411 OpenGl_Vec3 anArrowVec = myMin + anAxis.Direction * (myMax - myMin);
a79f67f8 412
778cd667 413 Graphic3d_TransformPers aTransMode (Graphic3d_TMF_ZoomPers, gp_Pnt (Standard_Real(anArrowVec.x()),
414 Standard_Real(anArrowVec.y()),
415 Standard_Real(anArrowVec.z())));
825aa485 416 const OpenGl_Mat4& aProjection = aContext->ProjectionState.Current();
417 const OpenGl_Mat4& aWorldView = aContext->WorldViewState.Current();
418 const Standard_Integer aWidth = theWorkspace->Width();
419 const Standard_Integer aHeight = theWorkspace->Height();
a79f67f8 420
a79f67f8 421 // Take into account Transform Persistence
3fe9ce0e 422 aContext->ModelWorldState.SetCurrent (aTransMode.Compute (theWorkspace->View()->Camera(), aProjection, aWorldView, aWidth, aHeight));
a79f67f8 423 aContext->ApplyModelViewMatrix();
424
825aa485 425 anAxis.Arrow.Render (theWorkspace);
426
a79f67f8 427 // Get current Model-View and Projection states
428 OpenGl_Mat4 aModelMat;
429 OpenGl_Mat4 aProjMat;
825aa485 430 aModelMat.Convert (aContext->WorldViewState.Current() * aContext->ModelWorldState.Current());
a79f67f8 431 aProjMat .Convert (aContext->ProjectionState.Current());
432
825aa485 433 // Get the window's (fixed) coordinates for before matrices modifications
536d98e2 434 OpenGl_Vec3 aEndPoint = -anAxis.Direction * myData.ArrowsLength();
a79f67f8 435 OpenGl_Vec3 aWinPoint;
825aa485 436 Graphic3d_TransformUtils::Project<Standard_ShortReal> (aEndPoint.x(), aEndPoint.y(), aEndPoint.z(),
3bffef55 437 aModelMat, aProjMat, aContext->Viewport(),
825aa485 438 aWinPoint.x(), aWinPoint.y(), aWinPoint.z());
a79f67f8 439
825aa485 440 aContext->ModelWorldState.SetIdentity();
441 aModelMat.Convert (aContext->WorldViewState.Current());
a79f67f8 442 aProjMat .Convert (aContext->ProjectionState.Current());
443
444 // Get start point of zoom persistent arrow
445 OpenGl_Vec3 anArrowStart;
825aa485 446 Graphic3d_TransformUtils::UnProject<Standard_ShortReal> (aWinPoint.x(), aWinPoint.y(), aWinPoint.z(),
3bffef55 447 aModelMat, aProjMat, aContext->Viewport(),
825aa485 448 anArrowStart.x(), anArrowStart.y(), anArrowStart.z());
a79f67f8 449 // Render axis line
a79f67f8 450 aModelMat = theMat;
825aa485 451 Graphic3d_TransformUtils::Translate (aModelMat, myMin.x(), myMin.y(), myMin.z());
a79f67f8 452
453 Standard_ShortReal aScaleFactor = ( (anArrowStart - myMin)*anAxis.Direction ).Modulus()
454 / (anAxis.Direction * (myMax - myMin) ).Modulus();
455 OpenGl_Vec3 aScaleAxes = anAxis.Direction * aScaleFactor;
825aa485 456 Graphic3d_TransformUtils::Scale (aModelMat, aScaleAxes.x(), aScaleAxes.y(), aScaleAxes.z());
a79f67f8 457
458 aContext->WorldViewState.SetCurrent (aModelMat);
459 aContext->ApplyWorldViewMatrix();
536d98e2 460 anAxis.Line.Render (theWorkspace);
a79f67f8 461}
462
463// =======================================================================
464// function : renderTickmarkTextLabels
465// purpose :
466// =======================================================================
467void OpenGl_GraduatedTrihedron::renderTickmarkLabels (const Handle(OpenGl_Workspace)& theWorkspace,
468 const OpenGl_Mat4& theMat,
469 const Standard_Integer theIndex,
470 const GridAxes& theGridAxes,
471 const Standard_ShortReal theDpix) const
472{
473 const Graphic3d_AxisAspect& aCurAspect = myData.AxisAspect (theIndex);
474 if (!aCurAspect.ToDrawName() && !aCurAspect.ToDrawValues())
475 {
476 return;
477 }
478
479 Standard_Character aTextValue[128];
480 const Axis& anAxis = myAxes[theIndex];
481 const OpenGl_Vec3 aSizeVec (myMax - myMin);
482 Standard_ShortReal aStep = theGridAxes.Axes[theIndex].GetData()[theIndex]
536d98e2 483 * (myMax.GetData()[theIndex] - myMin.GetData()[theIndex]) / aCurAspect.TickmarksNumber();
a79f67f8 484
485 OpenGl_Vec3 aDir = (theGridAxes.Ticks[theIndex] - theGridAxes.Origin).Normalized();
486 const Handle(OpenGl_Context)& aContext = theWorkspace->GetGlContext();
487
536d98e2 488 if (aCurAspect.ToDrawTickmarks() && aCurAspect.TickmarksNumber() > 0)
a79f67f8 489 {
490 theWorkspace->SetAspectLine (&myGridLineAspect);
491
492 OpenGl_Mat4 aModelMat (theMat);
493
536d98e2 494 anAxis.InitTickmark (aContext, aDir * (Standard_ShortReal) aCurAspect.TickmarksLength() * theDpix);
825aa485 495 Graphic3d_TransformUtils::Translate (aModelMat, theGridAxes.Ticks[theIndex].x(),
496 theGridAxes.Ticks[theIndex].y(),
497 theGridAxes.Ticks[theIndex].z());
a79f67f8 498 aContext->WorldViewState.SetCurrent (aModelMat);
499 aContext->ApplyWorldViewMatrix();
500 OpenGl_Vec3 aStepVec = anAxis.Direction * aStep;
536d98e2 501 for (Standard_Integer anIter = 0; anIter <= aCurAspect.TickmarksNumber(); ++anIter)
13a22457 502 {
536d98e2 503 anAxis.Tickmark.Render (theWorkspace);
825aa485 504 Graphic3d_TransformUtils::Translate (aModelMat, aStepVec.x(), aStepVec.y(), aStepVec.z());
a79f67f8 505 aContext->WorldViewState.SetCurrent (aModelMat);
506 aContext->ApplyWorldViewMatrix();
13a22457
S		 507 }
508 }
509
a79f67f8 510 // Restore matrix
511 aContext->WorldViewState.SetCurrent (theMat);
512 aContext->ApplyWorldViewMatrix();
513
514 if (aCurAspect.ToDrawName())
13a22457 515 {
536d98e2 516 Standard_Real anOffset = aCurAspect.NameOffset() + aCurAspect.TickmarksLength();
13a22457 517
a79f67f8 518 OpenGl_Vec3 aMiddle (theGridAxes.Ticks[theIndex] + aSizeVec * theGridAxes.Axes[theIndex] * 0.5f + aDir * (Standard_ShortReal)(theDpix * anOffset));
13a22457 519
b6472664 520 myAspectLabels.Aspect()->SetColor (anAxis.NameColor);
a79f67f8 521 theWorkspace->SetAspectText (&myAspectLabels);
522 anAxis.Label.SetPosition (aMiddle);
523 anAxis.Label.Render (theWorkspace);
13a22457
S		 524 }
525
536d98e2 526 if (aCurAspect.ToDrawValues() && aCurAspect.TickmarksNumber() > 0)
13a22457 527 {
b6472664 528 myAspectValues.Aspect()->SetColor (anAxis.LineAspect.Aspect()->Color());
a79f67f8 529 theWorkspace->SetAspectText (&myAspectValues);
536d98e2 530 Standard_Real anOffset = aCurAspect.ValuesOffset() + aCurAspect.TickmarksLength();
a79f67f8 531
536d98e2 532 for (Standard_Integer anIt = 0; anIt <= aCurAspect.TickmarksNumber(); ++anIt)
7fd59977 533 {
a79f67f8 534 sprintf (aTextValue, "%g", theGridAxes.Ticks[theIndex].GetData()[theIndex] + anIt * aStep);
535 OpenGl_Vec3 aPos (theGridAxes.Ticks[theIndex] + anAxis.Direction* (Standard_ShortReal) (anIt * aStep) + aDir * (Standard_ShortReal) (theDpix * anOffset));
536 myLabelValues.Init (theWorkspace->GetGlContext(), aTextValue, aPos);
537 myLabelValues.Render (theWorkspace);
7fd59977 538 }
a79f67f8 539 }
540}
541
542// =======================================================================
543// function : Render
544// purpose : call_graduatedtrihedron_redraw
545// =======================================================================
546void OpenGl_GraduatedTrihedron::Render (const Handle(OpenGl_Workspace)& theWorkspace) const
547{
548 const Handle(OpenGl_Context)& aContext = theWorkspace->GetGlContext();
c357e426 549 if (!myIsInitialized)
550 {
551 initGlResources (theWorkspace->GetGlContext());
552 myIsInitialized = Standard_True;
553 }
a79f67f8 554
555 // Update boundary box
556 OpenGl_Vec3 anOldMin = myMin;
557 OpenGl_Vec3 anOldMax = myMax;
558
559 if (myData.CubicAxesCallback)
560 {
c357e426 561 myData.CubicAxesCallback (myData.PtrView);
536d98e2 562 if (!myAxes[0].Line.IsInitialized()
563 || !myAxes[1].Line.IsInitialized()
564 || !myAxes[2].Line.IsInitialized()
565 || OpenGl_Vec3 (anOldMin - myMin).Modulus() > Precision::Confusion()
566 || OpenGl_Vec3 (anOldMax - myMax).Modulus() > Precision::Confusion())
13a22457 567 {
536d98e2 568 myAxes[0].InitLine (aContext, OpenGl_Vec3 (myMax.x() - myMin.x(), 0.0f, 0.0f));
569 myAxes[1].InitLine (aContext, OpenGl_Vec3 (0.0f, myMax.y() - myMin.y(), 0.0f));
570 myAxes[2].InitLine (aContext, OpenGl_Vec3 (0.0f, 0.0f, myMax.z() - myMin.z()));
13a22457 571 }
a79f67f8 572 }
573
574 // Find the farest point of bounding box
575
576 // Get normal of the view out of user and distance corresponding to 1 pixel
577 OpenGl_Vec3 aNormal;
578 Standard_ShortReal aDpix = getNormal (aContext, aNormal);
579 aNormal.Normalize();
580
581 // Get central point of bounding box
582 OpenGl_Vec3 aCenter;
583 aCenter = (myMin + myMax) * 0.5f;
584
585 // Check distance to corners of bounding box along the normal
586 Standard_ShortReal aCorners[8];
587 aCorners[0] = getDistanceToCorner (aNormal, aCenter, myMin.x(), myMin.y(), myMin.z());
588 aCorners[1] = getDistanceToCorner (aNormal, aCenter, myMin.x(), myMin.y(), myMax.z());
589 aCorners[2] = getDistanceToCorner (aNormal, aCenter, myMin.x(), myMax.y(), myMin.z());
590 aCorners[3] = getDistanceToCorner (aNormal, aCenter, myMin.x(), myMax.y(), myMax.z());
591 aCorners[4] = getDistanceToCorner (aNormal, aCenter, myMax.x(), myMin.y(), myMin.z());
592 aCorners[5] = getDistanceToCorner (aNormal, aCenter, myMax.x(), myMin.y(), myMax.z());
593 aCorners[6] = getDistanceToCorner (aNormal, aCenter, myMax.x(), myMax.y(), myMin.z());
594 aCorners[7] = getDistanceToCorner (aNormal, aCenter, myMax.x(), myMax.y(), myMax.z());
595
596 // NOTE:
597 // (0, 0, 1), (0, 1, 0) and (0, 0, 1) directions from (myMin.x(), Ymin, Zmin) point
598 // are reserved for trihedron axes.
599 // So for the grid here are 9 edges of cube,
600 // and, depending on the farest point, 2 or 3 of them may not be drawn
601 // if they overlap displayed model.
602
603 // Write an axes state what axes of bounding box are to be drawn
604 GridAxes aGridAxes;
605 Standard_ExtCharacter anAxesState = getGridAxes (aCorners, aGridAxes);
606
607 // Remember current aspects
f9ba5c4d 608 const OpenGl_AspectLine* anOldAspectLine = theWorkspace->AspectLine();
609 const OpenGl_AspectText* anOldAspectText = theWorkspace->AspectText();
a79f67f8 610
611 OpenGl_Mat4 aModelMatrix;
612 aModelMatrix.Convert (aContext->WorldViewState.Current());
613
614 // Remember model-view matrix
615 aContext->WorldViewState.Push();
616 aContext->WorldViewState.SetCurrent (aModelMatrix);
617 aContext->ApplyWorldViewMatrix();
618
619 if (myData.ToDrawGrid())
620 {
621 theWorkspace->SetAspectLine (&myGridLineAspect);
7fd59977 622
a79f67f8 623 // render grid edges
624 if (anAxesState & XOO_XYO)
13a22457 625 {
a79f67f8 626 renderLine (myAxes[1].Line, theWorkspace, aModelMatrix, myMax.x(), myMin.y(), myMin.z());
13a22457 627 }
7fd59977 628
a79f67f8 629 if (anAxesState & XOO_XOZ)
7fd59977 630 {
a79f67f8 631 renderLine (myAxes[2].Line,theWorkspace, aModelMatrix, myMax.x(), myMin.y(), myMin.z());
13a22457
S		 632 }
633
a79f67f8 634 if (anAxesState & OYO_OYZ)
13a22457 635 {
a79f67f8 636 renderLine (myAxes[2].Line, theWorkspace, aModelMatrix, myMin.x(), myMax.y(), myMin.z());
13a22457 637 }
13a22457 638
a79f67f8 639 if (anAxesState & OYO_XYO)
13a22457 640 {
a79f67f8 641 renderLine (myAxes[0].Line, theWorkspace, aModelMatrix, myMin.x(), myMax.y(), myMin.z());
13a22457 642 }
a79f67f8 643
644 if (anAxesState & OOZ_XOZ)
13a22457 645 {
a79f67f8 646 renderLine (myAxes[0].Line, theWorkspace, aModelMatrix, myMin.z(), myMin.y(), myMax.z());
13a22457
S		 647 }
648
a79f67f8 649 if (anAxesState & OOZ_OYZ)
650 {
651 renderLine (myAxes[1].Line, theWorkspace, aModelMatrix, myMin.x(), myMin.y(), myMax.z());
652 }
7fd59977 653
a79f67f8 654 if (anAxesState & OYZ_XYZ)
13a22457 655 {
a79f67f8 656 renderLine (myAxes[0].Line, theWorkspace, aModelMatrix, myMin.x(), myMax.y(), myMax.z());
657 }
a174a3c5 658
a79f67f8 659 if (anAxesState & XOZ_XYZ)
660 {
661 renderLine (myAxes[1].Line, theWorkspace, aModelMatrix, myMax.x(), myMin.y(), myMax.z());
7fd59977 662 }
663
a79f67f8 664 if (anAxesState & XYO_XYZ)
7fd59977 665 {
a79f67f8 666 renderLine (myAxes[2].Line, theWorkspace, aModelMatrix, myMax.x(), myMax.y(), myMin.z());
7fd59977 667 }
7fd59977 668
a79f67f8 669 for (Standard_Integer anIter = 0 ; anIter < 3; ++anIter)
13a22457 670 {
a79f67f8 671 renderGridPlane (theWorkspace, anIter, aGridAxes, aModelMatrix);
13a22457
S		 672 }
673 }
674
a79f67f8 675 // Axes (arrows)
676 if (myData.ToDrawAxes())
13a22457 677 {
a79f67f8 678 for (Standard_Integer anIter = 0; anIter < 3; ++anIter)
13a22457 679 {
a79f67f8 680 renderAxis (theWorkspace, anIter, aModelMatrix);
7fd59977 681 }
a79f67f8 682 }
7fd59977 683
a79f67f8 684 // Names of axes & values
685 for (Standard_Integer anIter = 0; anIter < 3; ++anIter)
686 {
687 // Restore current matrix
688 aContext->WorldViewState.SetCurrent (aModelMatrix);
689 aContext->ApplyWorldViewMatrix();
690 renderTickmarkLabels (theWorkspace, aModelMatrix, anIter, aGridAxes, aDpix);
691 }
13a22457 692
a79f67f8 693 theWorkspace->SetAspectLine (anOldAspectLine);
694 theWorkspace->SetAspectText (anOldAspectText);
a174a3c5 695
a79f67f8 696 aContext->WorldViewState.Pop();
697 aContext->ApplyWorldViewMatrix();
698}
7fd59977 699
a79f67f8 700// =======================================================================
701// method : SetMinMax
702// purpose :
703// =======================================================================
704void OpenGl_GraduatedTrihedron::SetMinMax (const OpenGl_Vec3& theMin, const OpenGl_Vec3& theMax)
705{
706 myMin = theMin;
707 myMax = theMax;
708}
7fd59977 709
a79f67f8 710// =======================================================================
711// method : OpenGl_GraduatedTrihedron::Axis constructor
536d98e2 712// purpose :
a79f67f8 713// =======================================================================
714OpenGl_GraduatedTrihedron::Axis::Axis (const Graphic3d_AxisAspect& theAspect,
536d98e2 715 const OpenGl_Vec3& theDirection)
a79f67f8 716: Direction (theDirection),
536d98e2 717 Label (NCollection_String ((Standard_Utf16Char* )theAspect.Name().ToExtString()).ToCString(), theDirection, THE_LABEL_PARAMS),
718 Tickmark (NULL),
719 Line (NULL),
720 Arrow (NULL)
a79f67f8 721{
b6472664 722 NameColor = theAspect.NameColor();
723 LineAspect.Aspect()->SetColor (theAspect.Color());
a79f67f8 724}
725
726// =======================================================================
536d98e2 727// method : OpenGl_GraduatedTrihedron::Axis::~Axis
728// purpose :
a79f67f8 729// =======================================================================
536d98e2 730OpenGl_GraduatedTrihedron::Axis::~Axis()
a79f67f8 731{
536d98e2 732 //
733}
734
735// =======================================================================
736// method : OpenGl_GraduatedTrihedron::Axis operator=
737// purpose :
738// =======================================================================
739OpenGl_GraduatedTrihedron::Axis& OpenGl_GraduatedTrihedron::Axis::operator= (const Axis& theOther)
740{
741 Direction = theOther.Direction;
742 NameColor = theOther.NameColor;
a79f67f8 743 LineAspect = theOther.LineAspect;
536d98e2 744 Label = theOther.Label;
a79f67f8 745
536d98e2 746 Line .InitBuffers (NULL, Graphic3d_TOPA_SEGMENTS, theOther.Line.Indices(), theOther.Line.Attributes(), theOther.Line.Bounds());
747 Tickmark.InitBuffers (NULL, Graphic3d_TOPA_SEGMENTS, theOther.Tickmark.Indices(), theOther.Tickmark.Attributes(), theOther.Tickmark.Bounds());
748 Arrow .InitBuffers (NULL, Graphic3d_TOPA_POLYLINES, theOther.Arrow.Indices(), theOther.Arrow.Attributes(), theOther.Arrow.Bounds());
a79f67f8 749 return *this;
750}
751
752// =======================================================================
753// method : InitArrow
536d98e2 754// purpose :
a79f67f8 755// =======================================================================
756void OpenGl_GraduatedTrihedron::Axis::InitArrow (const Handle(OpenGl_Context)& theContext,
757 const Standard_ShortReal theLength,
758 const OpenGl_Vec3& theNormal) const
759{
760 // Draw from the end point of the aris
761 OpenGl_Vec3 aLengthVec = -Direction * theLength;
762
763 // Radial direction to the arrow
764 OpenGl_Vec3 aRadial = OpenGl_Vec3::Cross (this->Direction, theNormal);
765 if (aRadial.Modulus() < (Standard_ShortReal) Precision::Confusion())
766 {
767 return;
13a22457 768 }
a79f67f8 769 aRadial = aRadial.Normalized() * theLength * 0.2f;
770
771 // Initialize arrow primitive array
772 // Make loop from polyline
773 const OpenGl_Vec3 aPoint1 = aRadial + aLengthVec;
774 const OpenGl_Vec3 aPoint2 (0.0f, 0.0f, 0.0f);
775 const OpenGl_Vec3 aPoint3 = -aRadial + aLengthVec;
776
777 Handle(Graphic3d_ArrayOfPolylines) anArray = new Graphic3d_ArrayOfPolylines (4);
778 anArray->AddVertex (aPoint1);
779 anArray->AddVertex (aPoint2);
780 anArray->AddVertex (aPoint3);
781 anArray->AddVertex (aPoint1);
782
536d98e2 783 Arrow.InitBuffers (theContext, Graphic3d_TOPA_POLYLINES,
784 anArray->Indices(), anArray->Attributes(), anArray->Bounds());
a79f67f8 785}
13a22457 786
a79f67f8 787// =======================================================================
788// function : InitTickmark
789// purpose :
790// =======================================================================
791void OpenGl_GraduatedTrihedron::Axis::InitTickmark (const Handle(OpenGl_Context)& theContext,
792 const OpenGl_Vec3& theDir) const
793{
794
795 Handle(Graphic3d_ArrayOfSegments) anArray = new Graphic3d_ArrayOfSegments (2);
796 anArray->AddVertex (0.0f, 0.0f, 0.0f);
797 anArray->AddVertex (theDir);
536d98e2 798 Tickmark.InitBuffers (theContext, Graphic3d_TOPA_SEGMENTS,
799 anArray->Indices(), anArray->Attributes(), anArray->Bounds());
2166f0fa 800
7fd59977 801}
802
a79f67f8 803// =======================================================================
804// function : InitLine
805// purpose :
806// =======================================================================
807void OpenGl_GraduatedTrihedron::Axis::InitLine (const Handle(OpenGl_Context)& theContext,
808 const OpenGl_Vec3& theDir) const
809{
810
811 Handle(Graphic3d_ArrayOfSegments) anArray = new Graphic3d_ArrayOfSegments (2);
812 anArray->AddVertex (0.0f, 0.0f, 0.0f);
813 anArray->AddVertex (theDir);
814
536d98e2 815 Line.InitBuffers (theContext, Graphic3d_TOPA_SEGMENTS,
816 anArray->Indices(), anArray->Attributes(), anArray->Bounds());
a79f67f8 817}
818
819// =======================================================================
820// function : Release
821// purpose :
822// =======================================================================
823void OpenGl_GraduatedTrihedron::Axis::Release (OpenGl_Context* theCtx)
7fd59977 824{
536d98e2 825 Label .Release (theCtx);
826 Tickmark.Release (theCtx);
827 Line .Release (theCtx);
828 Arrow .Release (theCtx);
13a22457 829}
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