1 // Copyright (C) 2014-20xx CEA/DEN, EDF R&D -->
3 // File: SketchPlugin_Arc.cpp
4 // Created: 26 Apr 2014
5 // Author: Artem ZHIDKOV
7 #include "SketchPlugin_Arc.h"
8 #include "SketchPlugin_Sketch.h"
9 #include <SketchPlugin_ConstraintCoincidence.h>
10 #include <SketchPlugin_ConstraintTangent.h>
12 #include <Events_Loop.h>
13 #include <ModelAPI_Data.h>
14 #include <ModelAPI_ResultConstruction.h>
15 #include <ModelAPI_AttributeDouble.h>
16 #include <ModelAPI_AttributeRefAttr.h>
17 #include <ModelAPI_AttributeSelection.h>
18 #include <ModelAPI_AttributeString.h>
19 #include <ModelAPI_Events.h>
20 #include <ModelAPI_Validator.h>
21 #include <ModelAPI_Session.h>
23 #include <GeomAPI_Ax2.h>
24 #include <GeomAPI_Circ2d.h>
25 #include <GeomAPI_Circ.h>
26 #include <GeomAPI_Dir2d.h>
27 #include <GeomAPI_Dir.h>
28 #include <GeomAPI_Lin2d.h>
29 #include <GeomAPI_Lin.h>
30 #include <GeomAPI_Pnt2d.h>
31 #include <GeomAPI_XY.h>
32 #include <GeomDataAPI_Point2D.h>
33 #include <GeomDataAPI_Dir.h>
34 #include <GeomAlgoAPI_PointBuilder.h>
35 #include <GeomAlgoAPI_EdgeBuilder.h>
36 #include <GeomAlgoAPI_CompoundBuilder.h>
40 const double tolerance = 1e-7;
41 const double paramTolerance = 1.e-4;
42 const double PI =3.141592653589793238463;
45 static const std::string& ARC_TYPE_CENTER_START_END()
47 static const std::string TYPE("CenterStartEnd");
50 static const std::string& ARC_TYPE_THREE_POINTS()
52 static const std::string TYPE("ThreePoints");
56 static const std::string& PASSED_POINT_ID()
58 static const std::string PASSED_PNT("ArcPassedPoint");
61 static const std::string& RADIUS_ID()
63 static const std::string RADIUS("ArcRadius");
66 static const std::string& ANGLE_ID()
68 static const std::string ANGLE("ArcAngle");
72 static const std::string& POINT_ID(int theIndex)
75 case 1: return SketchPlugin_Arc::START_ID();
76 case 2: return SketchPlugin_Arc::END_ID();
77 case 3: return PASSED_POINT_ID();
80 static const std::string DUMMY;
87 SketchPlugin_Arc::SketchPlugin_Arc()
88 : SketchPlugin_SketchEntity()
90 myStartUpdate = false;
99 void SketchPlugin_Arc::initDerivedClassAttributes()
101 data()->addAttribute(CENTER_ID(), GeomDataAPI_Point2D::typeId());
102 data()->addAttribute(START_ID(), GeomDataAPI_Point2D::typeId());
103 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
104 GeomDataAPI_Point2D>(data()->addAttribute(END_ID(), GeomDataAPI_Point2D::typeId()));
105 data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
106 ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
108 data()->addAttribute(INVERSED_ID(), ModelAPI_AttributeBoolean::typeId());
109 AttributeBooleanPtr isInversed =
110 std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(attribute(INVERSED_ID()));
111 if (!isInversed->isInitialized())
112 isInversed->setValue(false);
114 // get the initial values
115 if (anEndAttr->isInitialized()) {
116 myXEndBefore = anEndAttr->x();
117 myYEndBefore = anEndAttr->y();
120 data()->addAttribute(ARC_TYPE(), ModelAPI_AttributeString::typeId());
121 std::dynamic_pointer_cast<ModelAPI_AttributeString>(
122 data()->attribute(ARC_TYPE()))->setValue(ARC_TYPE_CENTER_START_END());
124 data()->addAttribute(PASSED_POINT_ID(), GeomDataAPI_Point2D::typeId());
125 data()->addAttribute(TANGENT_POINT_ID(), ModelAPI_AttributeRefAttr::typeId());
126 data()->addAttribute(RADIUS_ID(), ModelAPI_AttributeDouble::typeId());
127 data()->addAttribute(ANGLE_ID(), ModelAPI_AttributeDouble::typeId());
130 void SketchPlugin_Arc::execute()
132 SketchPlugin_Sketch* aSketch = sketch();
133 // result for the arc is set only when all obligatory attributes are initialized,
134 // otherwise AIS object is used to visualize the arc's preview
135 if (aSketch && isFeatureValid()) {
136 ResultPtr aLastResult = lastResult();
137 bool hasResult = aLastResult && aLastResult.get();
139 // compute a circle point in 3D view
140 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
141 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
142 // compute the arc start point
143 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
144 GeomDataAPI_Point2D>(data()->attribute(START_ID()));
146 std::shared_ptr<GeomAPI_Pnt> aCenter(aSketch->to3D(aCenterAttr->x(), aCenterAttr->y()));
147 // make a visible point
148 std::shared_ptr<GeomAPI_Shape> aCenterPointShape = GeomAlgoAPI_PointBuilder::point(aCenter);
149 std::shared_ptr<ModelAPI_ResultConstruction> aConstr1 = document()->createConstruction(
151 aConstr1->setShape(aCenterPointShape);
152 aConstr1->setIsInHistory(false);
153 setResult(aConstr1, 0);
155 // make a visible circle
156 std::shared_ptr<GeomDataAPI_Dir> aNDir = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
157 aSketch->data()->attribute(SketchPlugin_Sketch::NORM_ID()));
158 std::shared_ptr<GeomAPI_Dir> aNormal = aNDir->dir();
159 std::shared_ptr<GeomAPI_Pnt> aStartPoint(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
161 // compute and change the arc end point
162 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
163 GeomDataAPI_Point2D>(data()->attribute(END_ID()));
164 std::shared_ptr<GeomAPI_Circ2d> aCircleForArc(
165 new GeomAPI_Circ2d(aCenterAttr->pnt(), aStartAttr->pnt()));
166 std::shared_ptr<GeomAPI_Pnt2d> aProjection = aCircleForArc->project(anEndAttr->pnt());
167 if (aProjection && anEndAttr->pnt()->distance(aProjection) > tolerance)
168 anEndAttr->setValue(aProjection);
169 std::shared_ptr<GeomAPI_Pnt> aEndPoint(aSketch->to3D(anEndAttr->x(), anEndAttr->y()));
170 AttributeBooleanPtr isInversed =
171 std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(attribute(INVERSED_ID()));
173 std::shared_ptr<GeomAPI_Dir> anXDir(new GeomAPI_Dir(aStartPoint->xyz()->decreased(aCenter->xyz())));
174 std::shared_ptr<GeomAPI_Ax2> anAx2(new GeomAPI_Ax2(aCenter, aNormal, anXDir));
175 std::shared_ptr<GeomAPI_Circ> aCirc(new GeomAPI_Circ(anAx2, aCenter->distance(aStartPoint)));
176 double aParameterNew = 0.0;
177 if(aCirc->parameter(aEndPoint, paramTolerance, aParameterNew)) {
178 if(0 <= myParamBefore && myParamBefore <= PI / 2.0
179 && PI * 1.5 <= aParameterNew && aParameterNew <= PI * 2.0) {
180 isInversed->setValue(true);
181 } else if(PI * 1.5 <= myParamBefore && myParamBefore <= PI * 2.0
182 && 0 <= aParameterNew && aParameterNew <= PI / 2.0) {
183 isInversed->setValue(false);
186 myParamBefore = aParameterNew;
188 std::shared_ptr<GeomAPI_Shape> aCircleShape;
189 if(!isInversed->value()) {
190 aCircleShape = GeomAlgoAPI_EdgeBuilder::lineCircleArc(aCenter, aStartPoint, aEndPoint, aNormal);
192 aCircleShape = GeomAlgoAPI_EdgeBuilder::lineCircleArc(aCenter, aEndPoint, aStartPoint, aNormal);
196 std::shared_ptr<ModelAPI_ResultConstruction> aConstr2 = document()->createConstruction(
198 aConstr2->setShape(aCircleShape);
199 aConstr2->setIsInHistory(false);
200 setResult(aConstr2, 1);
203 // update radius and angle
204 updateDependentAttributes();
206 AttributeRefAttrPtr aTangentPoint = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
207 attribute(TANGENT_POINT_ID()));
208 if (!hasResult && aTangentPoint->attr())
209 tangencyArcConstraints();
213 AISObjectPtr SketchPlugin_Arc::getAISObject(AISObjectPtr thePrevious)
215 SketchPlugin_Sketch* aSketch = sketch();
217 // if the feature is valid, the execute() method should be performed, AIS object is empty
218 if (!isFeatureValid()) {
219 // compute a circle point in 3D view
220 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
221 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
223 std::list<std::shared_ptr<GeomAPI_Shape> > aShapes;
224 if (aCenterAttr->isInitialized()) {
225 std::shared_ptr<GeomAPI_Pnt> aCenter(aSketch->to3D(aCenterAttr->x(), aCenterAttr->y()));
226 // make a visible point
227 std::shared_ptr<GeomAPI_Shape> aCenterPointShape = GeomAlgoAPI_PointBuilder::point(aCenter);
228 aShapes.push_back(aCenterPointShape);
230 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
231 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::START_ID()));
232 std::shared_ptr<GeomDataAPI_Point2D> aEndAttr = std::dynamic_pointer_cast<
233 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::END_ID()));
234 AttributeStringPtr aTypeAttr = std::dynamic_pointer_cast<ModelAPI_AttributeString>(
235 data()->attribute(ARC_TYPE()));
237 if (aStartAttr->isInitialized()) {
238 // make a visible circle
239 std::shared_ptr<GeomDataAPI_Dir> aNDir = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
240 aSketch->data()->attribute(SketchPlugin_Sketch::NORM_ID()));
241 bool aHasPlane = aNDir && !(aNDir->x() == 0 && aNDir->y() == 0 && aNDir->z() == 0);
243 std::shared_ptr<GeomAPI_Dir> aNormal = aNDir->dir();
244 std::shared_ptr<GeomAPI_Pnt> aStartPoint(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
245 std::shared_ptr<GeomAPI_Pnt> aEndPoint = aStartPoint;
246 if (aTypeAttr && aTypeAttr->isInitialized() &&
247 aTypeAttr->value() == ARC_TYPE_THREE_POINTS() && aEndAttr->isInitialized())
248 aEndPoint = aSketch->to3D(aEndAttr->x(), aEndAttr->y());
250 std::shared_ptr<GeomAPI_Shape> aCircleShape = GeomAlgoAPI_EdgeBuilder::lineCircleArc(
251 aCenter, aStartPoint, aEndPoint, aNormal);
253 aShapes.push_back(aCircleShape);
257 if (!aShapes.empty()) {
258 std::shared_ptr<GeomAPI_Shape> aCompound = GeomAlgoAPI_CompoundBuilder::compound(aShapes);
259 AISObjectPtr anAIS = thePrevious;
261 anAIS = AISObjectPtr(new GeomAPI_AISObject);
262 anAIS->createShape(aCompound);
268 return AISObjectPtr();
271 void SketchPlugin_Arc::move(double theDeltaX, double theDeltaY)
273 std::shared_ptr<ModelAPI_Data> aData = data();
274 if (!aData->isValid())
277 aData->blockSendAttributeUpdated(true);
279 myStartUpdate = true;
281 std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
282 aData->attribute(SketchPlugin_Arc::START_ID()));
283 aPoint2->move(theDeltaX, theDeltaY);
285 std::shared_ptr<GeomDataAPI_Point2D> aPoint3 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
286 aData->attribute(SketchPlugin_Arc::END_ID()));
287 aPoint3->move(theDeltaX, theDeltaY);
288 myStartUpdate = false;
291 std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
292 aData->attribute(SketchPlugin_Arc::CENTER_ID()));
293 aPoint1->move(theDeltaX, theDeltaY);
295 std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
296 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(PASSED_POINT_ID()));
297 aPassedPoint->move(theDeltaX, theDeltaY);
298 aData->blockSendAttributeUpdated(false);
301 bool SketchPlugin_Arc::isFixed() {
302 return data()->selection(EXTERNAL_ID())->context().get() != NULL;
305 bool SketchPlugin_Arc::isFeatureValid()
307 AttributeStringPtr anArcTypeAttr =
308 std::dynamic_pointer_cast<ModelAPI_AttributeString>(data()->attribute(ARC_TYPE()));
311 std::string anArcType = anArcTypeAttr->value();
313 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
314 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::CENTER_ID()));
315 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
316 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::START_ID()));
317 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
318 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::END_ID()));
319 std::shared_ptr<GeomDataAPI_Point2D> aPassedAttr = std::dynamic_pointer_cast<
320 GeomDataAPI_Point2D>(data()->attribute(PASSED_POINT_ID()));
322 bool isValid = false;
323 if (anArcType == ARC_TYPE_THREE_POINTS())
324 isValid = aStartAttr->isInitialized() && anEndAttr->isInitialized() && aPassedAttr->isInitialized();
326 isValid = aCenterAttr->isInitialized() && aStartAttr->isInitialized() && anEndAttr->isInitialized();
331 static inline void adjustPeriod(double& theParam)
333 static const double PERIOD = 2.0 * PI;
334 while (theParam < 0.0) theParam += PERIOD;
335 while (theParam >= PERIOD) theParam -= PERIOD;
338 static inline void calculateArcAngleRadius(
339 const std::shared_ptr<GeomAPI_Circ2d>& theCircle,
340 const std::shared_ptr<GeomAPI_Pnt2d>& theStartPoint,
341 const std::shared_ptr<GeomAPI_Pnt2d>& theEndPoint,
342 const std::shared_ptr<GeomAPI_Pnt2d>& thePassedPoint,
343 AttributeDoublePtr theAngleAttr,
344 AttributeDoublePtr theRadiusAttr)
346 double aStartParam, aEndParam, aPassedParam;
347 theCircle->parameter(theStartPoint, paramTolerance, aStartParam);
348 theCircle->parameter(theEndPoint, paramTolerance, aEndParam);
349 theCircle->parameter(thePassedPoint, paramTolerance, aPassedParam);
350 adjustPeriod(aStartParam);
351 adjustPeriod(aEndParam);
352 adjustPeriod(aPassedParam);
354 if (aPassedParam >= aStartParam && aPassedParam <= aEndParam)
355 theAngleAttr->setValue((aEndParam - aStartParam) * 180.0 / PI);
357 theAngleAttr->setValue((aEndParam - aStartParam - 2.0 * PI) * 180.0 / PI);
358 theRadiusAttr->setValue(theCircle->radius());
361 static inline void calculatePassedPoint(
362 const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
363 const std::shared_ptr<GeomAPI_Pnt2d>& theStartPoint,
364 const std::shared_ptr<GeomAPI_Pnt2d>& theEndPoint,
366 std::shared_ptr<GeomDataAPI_Point2D> thePassedPoint)
368 if (theCenter->distance(theStartPoint) < tolerance ||
369 theCenter->distance(theEndPoint) < tolerance)
372 std::shared_ptr<GeomAPI_Dir2d> aStartDir(new GeomAPI_Dir2d(
373 theStartPoint->xy()->decreased(theCenter->xy())));
374 std::shared_ptr<GeomAPI_Dir2d> aEndDir(new GeomAPI_Dir2d(
375 theEndPoint->xy()->decreased(theCenter->xy())));
376 std::shared_ptr<GeomAPI_XY> aMidDirXY = aStartDir->xy()->added(aEndDir->xy());
377 if (aMidDirXY->dot(aMidDirXY) < tolerance * tolerance) {
378 // start and end directions are opposite, so middle direction will be orthogonal
379 aMidDirXY->setX(-aStartDir->y());
380 aMidDirXY->setY(aStartDir->x());
382 std::shared_ptr<GeomAPI_Dir2d> aMidDir(new GeomAPI_Dir2d(aMidDirXY));
383 if ((aStartDir->cross(aMidDir) > 0) ^ !theArcReversed)
386 double aRadius = theCenter->distance(theStartPoint);
387 std::shared_ptr<GeomAPI_XY> aPassedPnt = theCenter->xy()->added( aMidDir->xy()->multiplied(aRadius) );
388 thePassedPoint->setValue(aPassedPnt->x(), aPassedPnt->y());
391 void SketchPlugin_Arc::updateDependentAttributes()
393 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
394 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
395 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
396 GeomDataAPI_Point2D>(data()->attribute(START_ID()));
397 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
398 GeomDataAPI_Point2D>(data()->attribute(END_ID()));
399 std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
400 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(PASSED_POINT_ID()));
401 AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
402 data()->attribute(RADIUS_ID()));
403 AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
404 data()->attribute(ANGLE_ID()));
409 data()->blockSendAttributeUpdated(true);
411 calculatePassedPoint(aCenterAttr->pnt(), aStartAttr->pnt(), anEndAttr->pnt(),
412 isReversed(), aPassedPoint);
413 if (aRadiusAttr && anAngleAttr) {
414 std::shared_ptr<GeomAPI_Circ2d> aCircle(
415 new GeomAPI_Circ2d(aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt()));
416 if (aCircle->implPtr<void*>())
417 calculateArcAngleRadius(aCircle, aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt(),
418 anAngleAttr, aRadiusAttr);
420 data()->blockSendAttributeUpdated(false);
424 void SketchPlugin_Arc::attributeChanged(const std::string& theID)
426 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
427 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
428 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
429 GeomDataAPI_Point2D>(data()->attribute(START_ID()));
430 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
431 GeomDataAPI_Point2D>(data()->attribute(END_ID()));
432 // the second condition for unability to move external segments anywhere
433 if (theID == EXTERNAL_ID() || isFixed()) {
434 std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
435 // update arguments due to the selection value
436 if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
437 std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
438 std::shared_ptr<GeomAPI_Circ> aCirc = anEdge->circle();
440 aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
441 anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
442 aCenterAttr->setValue(sketch()->to2D(aCirc->center()));
448 AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
449 data()->attribute(RADIUS_ID()));
450 AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
451 data()->attribute(ANGLE_ID()));
453 if (theID == RADIUS_ID()) {
454 if (!aStartAttr->isInitialized() || !anEndAttr->isInitialized())
456 // move center and passed point
457 std::shared_ptr<GeomAPI_XY> aStartPnt = aStartAttr->pnt()->xy();
458 std::shared_ptr<GeomAPI_XY> aEndPnt = anEndAttr->pnt()->xy();
459 double aDist = aStartPnt->distance(aEndPnt);
460 if (fabs(aDist) < tolerance)
462 std::shared_ptr<GeomAPI_Dir2d> aDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
463 std::shared_ptr<GeomAPI_Dir2d> aMidPerpDir(new GeomAPI_Dir2d(-aDir->y(), aDir->x()));
464 std::shared_ptr<GeomAPI_XY> aMidPnt = aStartPnt->added(aEndPnt)->multiplied(0.5);
466 double anAngle = anAngleAttr->value() * PI / 180.0;
467 adjustPeriod(anAngle);
469 aMidPerpDir->reverse();
471 double aRadius = aRadiusAttr->value();
472 // The center is placed on a perpendicular bisector of a start-end points segment.
473 // If the radius is smaller that necessary, start and end points are moved too.
474 double aDist2 = aRadius * aRadius - aDist * aDist / 4.0;
475 aDist = aDist2 > 0.0 ? sqrt(aDist2) : 0.0;
476 // distance between middle point and start point (does not changed if the arc diameter is greater than start-end distance)
477 aDist2 = sqrt(aRadius * aRadius - aDist * aDist);
479 std::shared_ptr<GeomAPI_XY> aCenter = aMidPnt->added(aMidPerpDir->xy()->multiplied(aDist));
480 aStartPnt = aMidPnt->added(aDir->xy()->multiplied(-aDist2));
481 aEndPnt = aMidPnt->added(aDir->xy()->multiplied(aDist2));
483 data()->blockSendAttributeUpdated(true);
484 aCenterAttr->setValue(aCenter->x(), aCenter->y());
485 aStartAttr->setValue(aStartPnt->x(), aStartPnt->y());
486 anEndAttr->setValue(aEndPnt->x(), aEndPnt->y());
487 updateDependentAttributes();
488 data()->blockSendAttributeUpdated(false);
491 if (theID == ANGLE_ID()) {
492 if (!aStartAttr->isInitialized() || !aCenterAttr->isInitialized())
494 data()->blockSendAttributeUpdated(true);
495 // move end point and passed point
496 std::shared_ptr<GeomAPI_XY> aCenter = aCenterAttr->pnt()->xy();
497 double anAngle = anAngleAttr->value() * PI / 180.0;
498 double sinA = sin(anAngle);
499 double cosA = cos(anAngle);
500 std::shared_ptr<GeomAPI_XY> aStartDir = aStartAttr->pnt()->xy()->decreased(aCenter);
501 std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(
502 aStartDir->x() * cosA - aStartDir->y() * sinA,
503 aStartDir->x() * sinA + aStartDir->y() * cosA));
504 anEndAttr->setValue(aCenter->x() + aDir->x(), aCenter->y() + aDir->y());
509 aDir = std::shared_ptr<GeomAPI_XY>(new GeomAPI_XY(
510 aStartDir->x() * cosA - aStartDir->y() * sinA,
511 aStartDir->x() * sinA + aStartDir->y() * cosA));
512 std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
513 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(PASSED_POINT_ID()));
514 aPassedPoint->setValue(aCenter->x() + aDir->x(), aCenter->y() + aDir->y());
516 std::shared_ptr<GeomAPI_Circ2d> aCircle(
517 new GeomAPI_Circ2d(aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt()));
518 calculateArcAngleRadius(aCircle, aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt(),
519 anAngleAttr, aRadiusAttr);
520 data()->blockSendAttributeUpdated(false);
524 if (theID == CENTER_ID()) {
525 if (isFeatureValid())
530 AttributeStringPtr aTypeAttr =
531 std::dynamic_pointer_cast<ModelAPI_AttributeString>(attribute(ARC_TYPE()));
534 std::string anArcType = aTypeAttr->value();
536 // update the points in accordance to the changed point changes
537 if (anArcType == ARC_TYPE_CENTER_START_END()) {
538 if (!isFeatureValid())
540 if (theID == END_ID() && isStable()) {
541 // The arc is under construction, so its end point projected
542 // on the circle formed by center and start points
545 updateDependentAttributes();
547 else if (anArcType == ARC_TYPE_THREE_POINTS() &&
548 (theID == START_ID() || theID == END_ID() || theID == PASSED_POINT_ID())) {
549 data()->blockSendAttributeUpdated(true);
551 std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
552 int aNbInitialized = 0;
553 for (int i = 1; i <= 3; ++i) {
554 std::shared_ptr<GeomDataAPI_Point2D> aCurPnt =
555 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(POINT_ID(i)));
556 if (aCurPnt->isInitialized())
557 aPoints[aNbInitialized++] = aCurPnt->pnt();
560 if (aNbInitialized == 1)
561 aCenterAttr->setValue(aPoints[0]->x(), aPoints[0]->y());
562 else if (aNbInitialized == 2) {
563 // calculate center point, which gives a quarter of circle for the given start and end points
564 std::shared_ptr<GeomAPI_Pnt2d> aStartPnt = aPoints[0];
565 std::shared_ptr<GeomAPI_Pnt2d> aEndPnt = aPoints[1];
566 std::shared_ptr<GeomAPI_XY> aDir = aEndPnt->xy()->decreased(aStartPnt->xy())->multiplied(0.5);
567 double x = aDir->x();
568 double y = aDir->y();
571 std::shared_ptr<GeomAPI_XY> aCenter = aStartPnt->xy()->added(aDir);
572 double aRadius = sqrt(aDir->dot(aDir));
574 aCenterAttr->setValue(aCenter->x(), aCenter->y());
575 aRadiusAttr->setValue(aRadius);
576 anAngleAttr->setValue(90.0);
579 std::shared_ptr<GeomAPI_Circ2d> aCircle(
580 new GeomAPI_Circ2d(aPoints[0], aPoints[1], aPoints[2]));
582 std::shared_ptr<GeomAPI_Pnt2d> aCenter = aCircle->center();
584 aCenterAttr->setValue(aCenter);
585 if (theID == START_ID() || theID == END_ID())
586 updateDependentAttributes();
588 calculateArcAngleRadius(aCircle, aPoints[0], aPoints[1], aPoints[2],
589 anAngleAttr, aRadiusAttr);
593 data()->blockSendAttributeUpdated(false);
595 else if (anArcType == ARC_TYPE_TANGENT() && (theID == TANGENT_POINT_ID() || theID == END_ID())) {
596 SketchPlugin_Sketch* aSketch = sketch();
597 AttributeRefAttrPtr aTangPtAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
598 data()->attribute(TANGENT_POINT_ID()));
600 if (aTangPtAttr->isInitialized() && anEndAttr->isInitialized()) {
601 data()->blockSendAttributeUpdated(true);
602 // compute orthogonal direction
603 std::shared_ptr<GeomAPI_Dir2d> anOrthoDir;
604 std::shared_ptr<GeomDataAPI_Point2D> aTangentPoint =
605 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aTangPtAttr->attr());
606 std::shared_ptr<GeomAPI_Pnt2d> aTangPnt2d = aTangentPoint->pnt();
607 FeaturePtr aTangFeature = ModelAPI_Feature::feature(aTangentPoint->owner());
608 std::shared_ptr<GeomAPI_Edge> aTangEdge = std::dynamic_pointer_cast<GeomAPI_Edge>(
609 aTangFeature->lastResult()->shape());
610 if (aTangEdge->isLine()) {
611 std::shared_ptr<GeomAPI_Dir> aDir = aTangEdge->line()->direction();
612 std::shared_ptr<GeomAPI_Pnt> aPnt(new GeomAPI_Pnt(aDir->x(), aDir->y(), aDir->z()));
613 std::shared_ptr<GeomAPI_Pnt2d> aPnt2d = aSketch->to2D(aPnt);
614 anOrthoDir = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(-aPnt2d->y(), aPnt2d->x()));
616 else if (aTangEdge->isArc()) {
617 std::shared_ptr<GeomAPI_Pnt> aCenter = aTangEdge->circle()->center();
618 std::shared_ptr<GeomAPI_Pnt2d> aCenter2d = aSketch->to2D(aCenter);
619 anOrthoDir = std::shared_ptr<GeomAPI_Dir2d>(
620 new GeomAPI_Dir2d(aTangPnt2d->xy()->decreased(aCenter2d->xy())));
623 // compute parameters of the middle perpendicular
624 std::shared_ptr<GeomAPI_XY> aEndPntCoord = anEndAttr->pnt()->xy();
625 std::shared_ptr<GeomAPI_XY> aTempDir = aEndPntCoord->decreased(aTangPnt2d->xy());
626 std::shared_ptr<GeomAPI_Dir2d> aMidDir(new GeomAPI_Dir2d(-aTempDir->y(), aTempDir->x()));
627 std::shared_ptr<GeomAPI_Pnt2d> aMidPnt(
628 new GeomAPI_Pnt2d(aEndPntCoord->added(aTangPnt2d->xy())->multiplied(0.5)));
630 // compute center of arc by calculating intersection of orthogonal line and middle perpendicular
631 std::shared_ptr<GeomAPI_Lin2d> anOrthoLine(new GeomAPI_Lin2d(aTangPnt2d, anOrthoDir));
632 std::shared_ptr<GeomAPI_Lin2d> aMiddleLine(new GeomAPI_Lin2d(aMidPnt, aMidDir));
633 std::shared_ptr<GeomAPI_Pnt2d> aCenter = anOrthoLine->intersect(aMiddleLine);
635 aCenterAttr->setValue(aCenter);
636 aStartAttr->setValue(aTangPnt2d);
637 updateDependentAttributes();
640 data()->blockSendAttributeUpdated(false);
642 if (theID == TANGENT_POINT_ID())
643 tangencyArcConstraints();
648 void SketchPlugin_Arc::setReversed(bool isReversed)
650 std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(attribute(INVERSED_ID()))->setValue(isReversed);
654 bool SketchPlugin_Arc::isReversed()
656 return std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(attribute(INVERSED_ID()))->value();
659 void SketchPlugin_Arc::tangencyArcConstraints()
664 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
665 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
666 AttributeRefAttrPtr aTangPtAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
667 attribute(TANGENT_POINT_ID()));
668 if (!aTangPtAttr->attr())
671 FeaturePtr aFeature = ModelAPI_Feature::feature(aStartAttr->owner());
672 ObjectPtr aThisArc = aFeature->lastResult();
673 aFeature = ModelAPI_Feature::feature(aTangPtAttr->attr()->owner());
674 ObjectPtr aTangFeature = aFeature->lastResult();
676 // trying to find constraints to fix the tangency of the arc
677 std::set<FeaturePtr> aCoincidence;
678 std::set<FeaturePtr> aTangency;
680 AttributeRefAttrPtr aRefAttrA, aRefAttrB;
681 std::set<AttributePtr> aRefs = data()->refsToMe();
682 const std::set<AttributePtr>& aRefsToResult = lastResult()->data()->refsToMe();
683 aRefs.insert(aRefsToResult.begin(), aRefsToResult.end());
684 std::set<AttributePtr>::const_iterator aRefIt = aRefs.begin();
685 for (; aRefIt != aRefs.end(); ++aRefIt) {
686 FeaturePtr aConstrFeature = ModelAPI_Feature::feature((*aRefIt)->owner());
687 if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
688 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
689 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
690 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
691 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
692 if ((aRefAttrA && aRefAttrA->attr() == aStartAttr) ||
693 (aRefAttrB && aRefAttrB->attr() == aStartAttr))
694 aCoincidence.insert(aConstrFeature);
696 else if (aConstrFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
697 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
698 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
699 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
700 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
701 if ((aRefAttrA && aRefAttrA->object() == aThisArc) ||
702 (aRefAttrB && aRefAttrB->object() == aThisArc))
703 aTangency.insert(aConstrFeature);
706 // search applicable pair of constraints
707 bool isFound = false;
708 FeaturePtr aPrevCoincidence, aPrevTangency;
709 std::set<FeaturePtr>::const_iterator aCIt, aTIt;
710 for (aCIt = aCoincidence.begin(); aCIt != aCoincidence.end() && !isFound; ++aCIt) {
711 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
712 (*aCIt)->attribute(SketchPlugin_Constraint::ENTITY_A()));
713 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
714 (*aCIt)->attribute(SketchPlugin_Constraint::ENTITY_B()));
715 AttributePtr anOtherPoint =
716 aRefAttrA->attr() == aStartAttr ? aRefAttrB->attr() : aRefAttrA->attr();
717 for (aTIt = aTangency.begin(); aTIt != aTangency.end() && !isFound; ++aTIt) {
718 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
719 (*aTIt)->attribute(SketchPlugin_Constraint::ENTITY_A()));
720 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
721 (*aTIt)->attribute(SketchPlugin_Constraint::ENTITY_B()));
722 ObjectPtr anOtherObject = aRefAttrA->object() == aThisArc ?
723 aRefAttrB->object() : aRefAttrA->object();
724 if (anOtherPoint->owner() == anOtherObject) {
726 aPrevCoincidence = *aCIt;
727 aPrevTangency = *aTIt;
733 // update previous constraints
734 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
735 aPrevCoincidence->attribute(SketchPlugin_Constraint::ENTITY_A()));
736 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
737 aPrevCoincidence->attribute(SketchPlugin_Constraint::ENTITY_B()));
738 if (aRefAttrA->attr() == aStartAttr)
739 aRefAttrB->setAttr(aTangPtAttr->attr());
741 aRefAttrA->setAttr(aTangPtAttr->attr());
743 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
744 aPrevTangency->attribute(SketchPlugin_Constraint::ENTITY_A()));
745 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
746 aPrevTangency->attribute(SketchPlugin_Constraint::ENTITY_B()));
747 if (aRefAttrA->object() == aThisArc)
748 aRefAttrB->setObject(aTangFeature);
750 aRefAttrA->setObject(aTangFeature);
752 // Wait all constraints being removed, then send update events
753 static Events_ID aDeleteEvent = Events_Loop::eventByName(EVENT_OBJECT_DELETED);
754 bool isDeleteFlushed = Events_Loop::loop()->isFlushed(aDeleteEvent);
756 Events_Loop::loop()->setFlushed(aDeleteEvent, false);
757 // Remove all obtained constraints which use current arc, because
758 // there is no information which of them were used to build tangency arc.
759 DocumentPtr aDoc = sketch()->document();
760 for (aCIt = aCoincidence.begin(); aCIt != aCoincidence.end(); ++aCIt)
761 aDoc->removeFeature(*aCIt);
762 for (aTIt = aTangency.begin(); aTIt != aTangency.end(); ++aTIt)
763 aDoc->removeFeature(*aTIt);
764 // Send events to update the sub-features by the solver.
766 Events_Loop::loop()->setFlushed(aDeleteEvent, true);
768 Events_Loop::loop()->flush(aDeleteEvent);
770 // Wait all constraints being created, then send update events
771 static Events_ID anUpdateEvent = Events_Loop::eventByName(EVENT_OBJECT_UPDATED);
772 bool isUpdateFlushed = Events_Loop::loop()->isFlushed(anUpdateEvent);
774 Events_Loop::loop()->setFlushed(anUpdateEvent, false);
776 // Create new constraints
777 FeaturePtr aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
778 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
779 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
780 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
781 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
782 aRefAttrA->setAttr(aStartAttr);
783 aRefAttrB->setAttr(aTangPtAttr->attr());
784 aConstraint->execute();
785 ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
787 aConstraint = sketch()->addFeature(SketchPlugin_ConstraintTangent::ID());
788 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
789 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
790 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
791 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
792 aRefAttrA->setObject(aThisArc);
793 aRefAttrB->setObject(aTangFeature);
794 aConstraint->execute();
795 ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
797 // Send events to update the sub-features by the solver.
799 Events_Loop::loop()->setFlushed(anUpdateEvent, true);
803 void SketchPlugin_Arc::projectEndPoint()
805 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
806 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
807 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
808 GeomDataAPI_Point2D>(data()->attribute(START_ID()));
809 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
810 GeomDataAPI_Point2D>(data()->attribute(END_ID()));
812 if (aCenterAttr->pnt()->distance(aStartAttr->pnt()) < tolerance)
814 data()->blockSendAttributeUpdated(true);
815 // compute and change the arc end point
816 std::shared_ptr<GeomAPI_Circ2d> aCircleForArc(
817 new GeomAPI_Circ2d(aCenterAttr->pnt(), aStartAttr->pnt()));
818 std::shared_ptr<GeomAPI_Pnt2d> aProjection = aCircleForArc->project(anEndAttr->pnt());
819 if (aProjection && anEndAttr->pnt()->distance(aProjection) > tolerance)
820 anEndAttr->setValue(aProjection);
821 updateDependentAttributes();
822 data()->blockSendAttributeUpdated(false);