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()));
222 if (aCenterAttr->isInitialized()) {
223 std::shared_ptr<GeomAPI_Pnt> aCenter(aSketch->to3D(aCenterAttr->x(), aCenterAttr->y()));
225 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
226 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::START_ID()));
227 std::shared_ptr<GeomDataAPI_Point2D> aEndAttr = std::dynamic_pointer_cast<
228 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::END_ID()));
229 AttributeStringPtr aTypeAttr = std::dynamic_pointer_cast<ModelAPI_AttributeString>(
230 data()->attribute(ARC_TYPE()));
232 if (aStartAttr->isInitialized()) {
233 // make a visible circle
234 std::shared_ptr<GeomDataAPI_Dir> aNDir = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
235 aSketch->data()->attribute(SketchPlugin_Sketch::NORM_ID()));
236 bool aHasPlane = aNDir && !(aNDir->x() == 0 && aNDir->y() == 0 && aNDir->z() == 0);
238 std::shared_ptr<GeomAPI_Dir> aNormal = aNDir->dir();
239 std::shared_ptr<GeomAPI_Pnt> aStartPoint(aSketch->to3D(aStartAttr->x(), aStartAttr->y()));
240 std::shared_ptr<GeomAPI_Pnt> aEndPoint = aStartPoint;
241 if (aTypeAttr && aTypeAttr->isInitialized() &&
242 aTypeAttr->value() == ARC_TYPE_THREE_POINTS() && aEndAttr->isInitialized())
243 aEndPoint = aSketch->to3D(aEndAttr->x(), aEndAttr->y());
244 std::shared_ptr<GeomAPI_Shape> aCircleShape = GeomAlgoAPI_EdgeBuilder::lineCircleArc(
245 aCenter, aStartPoint, aEndPoint, aNormal);
247 std::list<std::shared_ptr<GeomAPI_Shape> > aShapes;
248 // make a visible point
249 std::shared_ptr<GeomAPI_Shape> aCenterPointShape = GeomAlgoAPI_PointBuilder::point(aCenter);
250 aShapes.push_back(aCenterPointShape);
252 aShapes.push_back(aCircleShape);
253 if (!aShapes.empty())
255 std::shared_ptr<GeomAPI_Shape> aCompound = GeomAlgoAPI_CompoundBuilder::compound(aShapes);
256 AISObjectPtr anAIS = thePrevious;
258 anAIS = AISObjectPtr(new GeomAPI_AISObject);
259 anAIS->createShape(aCompound);
269 return AISObjectPtr();
272 void SketchPlugin_Arc::move(double theDeltaX, double theDeltaY)
274 std::shared_ptr<ModelAPI_Data> aData = data();
275 if (!aData->isValid())
278 aData->blockSendAttributeUpdated(true);
280 myStartUpdate = true;
282 std::shared_ptr<GeomDataAPI_Point2D> aPoint2 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
283 aData->attribute(SketchPlugin_Arc::START_ID()));
284 aPoint2->move(theDeltaX, theDeltaY);
286 std::shared_ptr<GeomDataAPI_Point2D> aPoint3 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
287 aData->attribute(SketchPlugin_Arc::END_ID()));
288 aPoint3->move(theDeltaX, theDeltaY);
289 myStartUpdate = false;
292 std::shared_ptr<GeomDataAPI_Point2D> aPoint1 = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
293 aData->attribute(SketchPlugin_Arc::CENTER_ID()));
294 aPoint1->move(theDeltaX, theDeltaY);
296 std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
297 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aData->attribute(PASSED_POINT_ID()));
298 aPassedPoint->move(theDeltaX, theDeltaY);
299 aData->blockSendAttributeUpdated(false);
302 bool SketchPlugin_Arc::isFixed() {
303 return data()->selection(EXTERNAL_ID())->context().get() != NULL;
306 bool SketchPlugin_Arc::isFeatureValid()
308 AttributeStringPtr anArcTypeAttr =
309 std::dynamic_pointer_cast<ModelAPI_AttributeString>(data()->attribute(ARC_TYPE()));
312 std::string anArcType = anArcTypeAttr->value();
314 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
315 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::CENTER_ID()));
316 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
317 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::START_ID()));
318 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
319 GeomDataAPI_Point2D>(data()->attribute(SketchPlugin_Arc::END_ID()));
320 std::shared_ptr<GeomDataAPI_Point2D> aPassedAttr = std::dynamic_pointer_cast<
321 GeomDataAPI_Point2D>(data()->attribute(PASSED_POINT_ID()));
323 bool isValid = false;
324 if (anArcType == ARC_TYPE_THREE_POINTS())
325 isValid = aStartAttr->isInitialized() && anEndAttr->isInitialized() && aPassedAttr->isInitialized();
327 isValid = aCenterAttr->isInitialized() && aStartAttr->isInitialized() && anEndAttr->isInitialized();
332 static inline void adjustPeriod(double& theParam)
334 static const double PERIOD = 2.0 * PI;
335 while (theParam < 0.0) theParam += PERIOD;
336 while (theParam >= PERIOD) theParam -= PERIOD;
339 static inline void calculateArcAngleRadius(
340 const std::shared_ptr<GeomAPI_Circ2d>& theCircle,
341 const std::shared_ptr<GeomAPI_Pnt2d>& theStartPoint,
342 const std::shared_ptr<GeomAPI_Pnt2d>& theEndPoint,
343 const std::shared_ptr<GeomAPI_Pnt2d>& thePassedPoint,
344 AttributeDoublePtr theAngleAttr,
345 AttributeDoublePtr theRadiusAttr)
347 double aStartParam, aEndParam, aPassedParam;
348 theCircle->parameter(theStartPoint, paramTolerance, aStartParam);
349 theCircle->parameter(theEndPoint, paramTolerance, aEndParam);
350 theCircle->parameter(thePassedPoint, paramTolerance, aPassedParam);
351 adjustPeriod(aStartParam);
352 adjustPeriod(aEndParam);
353 adjustPeriod(aPassedParam);
355 if (aPassedParam >= aStartParam && aPassedParam <= aEndParam)
356 theAngleAttr->setValue((aEndParam - aStartParam) * 180.0 / PI);
358 theAngleAttr->setValue((aEndParam - aStartParam - 2.0 * PI) * 180.0 / PI);
359 theRadiusAttr->setValue(theCircle->radius());
362 static inline void calculatePassedPoint(
363 const std::shared_ptr<GeomAPI_Pnt2d>& theCenter,
364 const std::shared_ptr<GeomAPI_Pnt2d>& theStartPoint,
365 const std::shared_ptr<GeomAPI_Pnt2d>& theEndPoint,
367 std::shared_ptr<GeomDataAPI_Point2D> thePassedPoint)
369 if (theCenter->distance(theStartPoint) < tolerance ||
370 theCenter->distance(theEndPoint) < tolerance)
373 std::shared_ptr<GeomAPI_Dir2d> aStartDir(new GeomAPI_Dir2d(
374 theStartPoint->xy()->decreased(theCenter->xy())));
375 std::shared_ptr<GeomAPI_Dir2d> aEndDir(new GeomAPI_Dir2d(
376 theEndPoint->xy()->decreased(theCenter->xy())));
377 std::shared_ptr<GeomAPI_XY> aMidDirXY = aStartDir->xy()->added(aEndDir->xy());
378 if (aMidDirXY->dot(aMidDirXY) < tolerance * tolerance) {
379 // start and end directions are opposite, so middle direction will be orthogonal
380 aMidDirXY->setX(-aStartDir->y());
381 aMidDirXY->setY(aStartDir->x());
383 std::shared_ptr<GeomAPI_Dir2d> aMidDir(new GeomAPI_Dir2d(aMidDirXY));
384 if ((aStartDir->cross(aMidDir) > 0) ^ !theArcReversed)
387 double aRadius = theCenter->distance(theStartPoint);
388 std::shared_ptr<GeomAPI_XY> aPassedPnt = theCenter->xy()->added( aMidDir->xy()->multiplied(aRadius) );
389 thePassedPoint->setValue(aPassedPnt->x(), aPassedPnt->y());
392 void SketchPlugin_Arc::updateDependentAttributes()
394 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
395 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
396 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
397 GeomDataAPI_Point2D>(data()->attribute(START_ID()));
398 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
399 GeomDataAPI_Point2D>(data()->attribute(END_ID()));
400 std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
401 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(PASSED_POINT_ID()));
402 AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
403 data()->attribute(RADIUS_ID()));
404 AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
405 data()->attribute(ANGLE_ID()));
410 data()->blockSendAttributeUpdated(true);
412 calculatePassedPoint(aCenterAttr->pnt(), aStartAttr->pnt(), anEndAttr->pnt(),
413 isReversed(), aPassedPoint);
414 if (aRadiusAttr && anAngleAttr) {
415 std::shared_ptr<GeomAPI_Circ2d> aCircle(
416 new GeomAPI_Circ2d(aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt()));
417 if (aCircle->implPtr<void*>())
418 calculateArcAngleRadius(aCircle, aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt(),
419 anAngleAttr, aRadiusAttr);
421 data()->blockSendAttributeUpdated(false);
425 void SketchPlugin_Arc::attributeChanged(const std::string& theID)
427 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
428 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
429 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
430 GeomDataAPI_Point2D>(data()->attribute(START_ID()));
431 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
432 GeomDataAPI_Point2D>(data()->attribute(END_ID()));
433 // the second condition for unability to move external segments anywhere
434 if (theID == EXTERNAL_ID() || isFixed()) {
435 std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
436 // update arguments due to the selection value
437 if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
438 std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
439 std::shared_ptr<GeomAPI_Circ> aCirc = anEdge->circle();
441 aStartAttr->setValue(sketch()->to2D(anEdge->firstPoint()));
442 anEndAttr->setValue(sketch()->to2D(anEdge->lastPoint()));
443 aCenterAttr->setValue(sketch()->to2D(aCirc->center()));
449 AttributeDoublePtr aRadiusAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
450 data()->attribute(RADIUS_ID()));
451 AttributeDoublePtr anAngleAttr = std::dynamic_pointer_cast<ModelAPI_AttributeDouble>(
452 data()->attribute(ANGLE_ID()));
454 if (theID == RADIUS_ID()) {
455 if (!aStartAttr->isInitialized() || !anEndAttr->isInitialized())
457 // move center and passed point
458 std::shared_ptr<GeomAPI_XY> aStartPnt = aStartAttr->pnt()->xy();
459 std::shared_ptr<GeomAPI_XY> aEndPnt = anEndAttr->pnt()->xy();
460 double aDist = aStartPnt->distance(aEndPnt);
461 if (fabs(aDist) < tolerance)
463 std::shared_ptr<GeomAPI_Dir2d> aDir(new GeomAPI_Dir2d(aEndPnt->decreased(aStartPnt)));
464 std::shared_ptr<GeomAPI_Dir2d> aMidPerpDir(new GeomAPI_Dir2d(-aDir->y(), aDir->x()));
465 std::shared_ptr<GeomAPI_XY> aMidPnt = aStartPnt->added(aEndPnt)->multiplied(0.5);
467 double anAngle = anAngleAttr->value() * PI / 180.0;
468 adjustPeriod(anAngle);
470 aMidPerpDir->reverse();
472 double aRadius = aRadiusAttr->value();
473 // The center is placed on a perpendicular bisector of a start-end points segment.
474 // If the radius is smaller that necessary, start and end points are moved too.
475 double aDist2 = aRadius * aRadius - aDist * aDist / 4.0;
476 aDist = aDist2 > 0.0 ? sqrt(aDist2) : 0.0;
477 // distance between middle point and start point (does not changed if the arc diameter is greater than start-end distance)
478 aDist2 = sqrt(aRadius * aRadius - aDist * aDist);
480 std::shared_ptr<GeomAPI_XY> aCenter = aMidPnt->added(aMidPerpDir->xy()->multiplied(aDist));
481 aStartPnt = aMidPnt->added(aDir->xy()->multiplied(-aDist2));
482 aEndPnt = aMidPnt->added(aDir->xy()->multiplied(aDist2));
484 data()->blockSendAttributeUpdated(true);
485 aCenterAttr->setValue(aCenter->x(), aCenter->y());
486 aStartAttr->setValue(aStartPnt->x(), aStartPnt->y());
487 anEndAttr->setValue(aEndPnt->x(), aEndPnt->y());
488 updateDependentAttributes();
489 data()->blockSendAttributeUpdated(false);
492 if (theID == ANGLE_ID()) {
493 if (!aStartAttr->isInitialized() || !aCenterAttr->isInitialized())
495 data()->blockSendAttributeUpdated(true);
496 // move end point and passed point
497 std::shared_ptr<GeomAPI_XY> aCenter = aCenterAttr->pnt()->xy();
498 double anAngle = anAngleAttr->value() * PI / 180.0;
499 double sinA = sin(anAngle);
500 double cosA = cos(anAngle);
501 std::shared_ptr<GeomAPI_XY> aStartDir = aStartAttr->pnt()->xy()->decreased(aCenter);
502 std::shared_ptr<GeomAPI_XY> aDir(new GeomAPI_XY(
503 aStartDir->x() * cosA - aStartDir->y() * sinA,
504 aStartDir->x() * sinA + aStartDir->y() * cosA));
505 anEndAttr->setValue(aCenter->x() + aDir->x(), aCenter->y() + aDir->y());
510 aDir = std::shared_ptr<GeomAPI_XY>(new GeomAPI_XY(
511 aStartDir->x() * cosA - aStartDir->y() * sinA,
512 aStartDir->x() * sinA + aStartDir->y() * cosA));
513 std::shared_ptr<GeomDataAPI_Point2D> aPassedPoint =
514 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(PASSED_POINT_ID()));
515 aPassedPoint->setValue(aCenter->x() + aDir->x(), aCenter->y() + aDir->y());
517 std::shared_ptr<GeomAPI_Circ2d> aCircle(
518 new GeomAPI_Circ2d(aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt()));
519 calculateArcAngleRadius(aCircle, aStartAttr->pnt(), anEndAttr->pnt(), aPassedPoint->pnt(),
520 anAngleAttr, aRadiusAttr);
521 data()->blockSendAttributeUpdated(false);
525 if (theID == CENTER_ID()) {
526 if (isFeatureValid())
531 AttributeStringPtr aTypeAttr =
532 std::dynamic_pointer_cast<ModelAPI_AttributeString>(attribute(ARC_TYPE()));
535 std::string anArcType = aTypeAttr->value();
537 // update the points in accordance to the changed point changes
538 if (anArcType == ARC_TYPE_CENTER_START_END()) {
539 if (!isFeatureValid())
541 if (theID == END_ID() && isStable()) {
542 // The arc is under construction, so its end point projected
543 // on the circle formed by center and start points
546 updateDependentAttributes();
548 else if (anArcType == ARC_TYPE_THREE_POINTS() &&
549 (theID == START_ID() || theID == END_ID() || theID == PASSED_POINT_ID())) {
550 data()->blockSendAttributeUpdated(true);
552 std::shared_ptr<GeomAPI_Pnt2d> aPoints[3];
553 int aNbInitialized = 0;
554 for (int i = 1; i <= 3; ++i) {
555 std::shared_ptr<GeomDataAPI_Point2D> aCurPnt =
556 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(POINT_ID(i)));
557 if (aCurPnt->isInitialized())
558 aPoints[aNbInitialized++] = aCurPnt->pnt();
561 if (aNbInitialized == 1)
562 aCenterAttr->setValue(aPoints[0]->x(), aPoints[0]->y());
563 else if (aNbInitialized == 2) {
564 // calculate center point, which gives a quarter of circle for the given start and end points
565 std::shared_ptr<GeomAPI_Pnt2d> aStartPnt = aPoints[0];
566 std::shared_ptr<GeomAPI_Pnt2d> aEndPnt = aPoints[1];
567 std::shared_ptr<GeomAPI_XY> aDir = aEndPnt->xy()->decreased(aStartPnt->xy())->multiplied(0.5);
568 double x = aDir->x();
569 double y = aDir->y();
572 std::shared_ptr<GeomAPI_XY> aCenter = aStartPnt->xy()->added(aDir);
573 double aRadius = sqrt(aDir->dot(aDir));
575 aCenterAttr->setValue(aCenter->x(), aCenter->y());
576 aRadiusAttr->setValue(aRadius);
577 anAngleAttr->setValue(90.0);
580 std::shared_ptr<GeomAPI_Circ2d> aCircle(
581 new GeomAPI_Circ2d(aPoints[0], aPoints[1], aPoints[2]));
583 std::shared_ptr<GeomAPI_Pnt2d> aCenter = aCircle->center();
585 aCenterAttr->setValue(aCenter);
586 if (theID == START_ID() || theID == END_ID())
587 updateDependentAttributes();
589 calculateArcAngleRadius(aCircle, aPoints[0], aPoints[1], aPoints[2],
590 anAngleAttr, aRadiusAttr);
594 data()->blockSendAttributeUpdated(false);
596 else if (anArcType == ARC_TYPE_TANGENT() && (theID == TANGENT_POINT_ID() || theID == END_ID())) {
597 SketchPlugin_Sketch* aSketch = sketch();
598 AttributeRefAttrPtr aTangPtAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
599 data()->attribute(TANGENT_POINT_ID()));
601 if (aTangPtAttr->isInitialized() && anEndAttr->isInitialized()) {
602 data()->blockSendAttributeUpdated(true);
603 // compute orthogonal direction
604 std::shared_ptr<GeomAPI_Dir2d> anOrthoDir;
605 std::shared_ptr<GeomDataAPI_Point2D> aTangentPoint =
606 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(aTangPtAttr->attr());
607 std::shared_ptr<GeomAPI_Pnt2d> aTangPnt2d = aTangentPoint->pnt();
608 FeaturePtr aTangFeature = ModelAPI_Feature::feature(aTangentPoint->owner());
609 std::shared_ptr<GeomAPI_Edge> aTangEdge = std::dynamic_pointer_cast<GeomAPI_Edge>(
610 aTangFeature->lastResult()->shape());
611 if (aTangEdge->isLine()) {
612 std::shared_ptr<GeomAPI_Dir> aDir = aTangEdge->line()->direction();
613 std::shared_ptr<GeomAPI_Pnt> aPnt(new GeomAPI_Pnt(aDir->x(), aDir->y(), aDir->z()));
614 std::shared_ptr<GeomAPI_Pnt2d> aPnt2d = aSketch->to2D(aPnt);
615 anOrthoDir = std::shared_ptr<GeomAPI_Dir2d>(new GeomAPI_Dir2d(-aPnt2d->y(), aPnt2d->x()));
617 else if (aTangEdge->isArc()) {
618 std::shared_ptr<GeomAPI_Pnt> aCenter = aTangEdge->circle()->center();
619 std::shared_ptr<GeomAPI_Pnt2d> aCenter2d = aSketch->to2D(aCenter);
620 anOrthoDir = std::shared_ptr<GeomAPI_Dir2d>(
621 new GeomAPI_Dir2d(aTangPnt2d->xy()->decreased(aCenter2d->xy())));
624 // compute parameters of the middle perpendicular
625 std::shared_ptr<GeomAPI_XY> aEndPntCoord = anEndAttr->pnt()->xy();
626 std::shared_ptr<GeomAPI_XY> aTempDir = aEndPntCoord->decreased(aTangPnt2d->xy());
627 std::shared_ptr<GeomAPI_Dir2d> aMidDir(new GeomAPI_Dir2d(-aTempDir->y(), aTempDir->x()));
628 std::shared_ptr<GeomAPI_Pnt2d> aMidPnt(
629 new GeomAPI_Pnt2d(aEndPntCoord->added(aTangPnt2d->xy())->multiplied(0.5)));
631 // compute center of arc by calculating intersection of orthogonal line and middle perpendicular
632 std::shared_ptr<GeomAPI_Lin2d> anOrthoLine(new GeomAPI_Lin2d(aTangPnt2d, anOrthoDir));
633 std::shared_ptr<GeomAPI_Lin2d> aMiddleLine(new GeomAPI_Lin2d(aMidPnt, aMidDir));
634 std::shared_ptr<GeomAPI_Pnt2d> aCenter = anOrthoLine->intersect(aMiddleLine);
636 aCenterAttr->setValue(aCenter);
637 aStartAttr->setValue(aTangPnt2d);
638 updateDependentAttributes();
641 data()->blockSendAttributeUpdated(false);
643 if (theID == TANGENT_POINT_ID())
644 tangencyArcConstraints();
649 void SketchPlugin_Arc::setReversed(bool isReversed)
651 std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(attribute(INVERSED_ID()))->setValue(isReversed);
655 bool SketchPlugin_Arc::isReversed()
657 return std::dynamic_pointer_cast<ModelAPI_AttributeBoolean>(attribute(INVERSED_ID()))->value();
660 void SketchPlugin_Arc::tangencyArcConstraints()
665 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr =
666 std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(START_ID()));
667 AttributeRefAttrPtr aTangPtAttr = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
668 attribute(TANGENT_POINT_ID()));
669 if (!aTangPtAttr->attr())
672 FeaturePtr aFeature = ModelAPI_Feature::feature(aStartAttr->owner());
673 ObjectPtr aThisArc = aFeature->lastResult();
674 aFeature = ModelAPI_Feature::feature(aTangPtAttr->attr()->owner());
675 ObjectPtr aTangFeature = aFeature->lastResult();
677 // trying to find constraints to fix the tangency of the arc
678 std::set<FeaturePtr> aCoincidence;
679 std::set<FeaturePtr> aTangency;
681 AttributeRefAttrPtr aRefAttrA, aRefAttrB;
682 std::set<AttributePtr> aRefs = data()->refsToMe();
683 const std::set<AttributePtr>& aRefsToResult = lastResult()->data()->refsToMe();
684 aRefs.insert(aRefsToResult.begin(), aRefsToResult.end());
685 std::set<AttributePtr>::const_iterator aRefIt = aRefs.begin();
686 for (; aRefIt != aRefs.end(); ++aRefIt) {
687 FeaturePtr aConstrFeature = ModelAPI_Feature::feature((*aRefIt)->owner());
688 if (aConstrFeature->getKind() == SketchPlugin_ConstraintCoincidence::ID()) {
689 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
690 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
691 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
692 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
693 if ((aRefAttrA && aRefAttrA->attr() == aStartAttr) ||
694 (aRefAttrB && aRefAttrB->attr() == aStartAttr))
695 aCoincidence.insert(aConstrFeature);
697 else if (aConstrFeature->getKind() == SketchPlugin_ConstraintTangent::ID()) {
698 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
699 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_A()));
700 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
701 aConstrFeature->attribute(SketchPlugin_Constraint::ENTITY_B()));
702 if ((aRefAttrA && aRefAttrA->object() == aThisArc) ||
703 (aRefAttrB && aRefAttrB->object() == aThisArc))
704 aTangency.insert(aConstrFeature);
707 // search applicable pair of constraints
708 bool isFound = false;
709 FeaturePtr aPrevCoincidence, aPrevTangency;
710 std::set<FeaturePtr>::const_iterator aCIt, aTIt;
711 for (aCIt = aCoincidence.begin(); aCIt != aCoincidence.end() && !isFound; ++aCIt) {
712 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
713 (*aCIt)->attribute(SketchPlugin_Constraint::ENTITY_A()));
714 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
715 (*aCIt)->attribute(SketchPlugin_Constraint::ENTITY_B()));
716 AttributePtr anOtherPoint =
717 aRefAttrA->attr() == aStartAttr ? aRefAttrB->attr() : aRefAttrA->attr();
718 for (aTIt = aTangency.begin(); aTIt != aTangency.end() && !isFound; ++aTIt) {
719 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
720 (*aTIt)->attribute(SketchPlugin_Constraint::ENTITY_A()));
721 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
722 (*aTIt)->attribute(SketchPlugin_Constraint::ENTITY_B()));
723 ObjectPtr anOtherObject = aRefAttrA->object() == aThisArc ?
724 aRefAttrB->object() : aRefAttrA->object();
725 if (anOtherPoint->owner() == anOtherObject) {
727 aPrevCoincidence = *aCIt;
728 aPrevTangency = *aTIt;
734 // update previous constraints
735 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
736 aPrevCoincidence->attribute(SketchPlugin_Constraint::ENTITY_A()));
737 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
738 aPrevCoincidence->attribute(SketchPlugin_Constraint::ENTITY_B()));
739 if (aRefAttrA->attr() == aStartAttr)
740 aRefAttrB->setAttr(aTangPtAttr->attr());
742 aRefAttrA->setAttr(aTangPtAttr->attr());
744 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
745 aPrevTangency->attribute(SketchPlugin_Constraint::ENTITY_A()));
746 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
747 aPrevTangency->attribute(SketchPlugin_Constraint::ENTITY_B()));
748 if (aRefAttrA->object() == aThisArc)
749 aRefAttrB->setObject(aTangFeature);
751 aRefAttrA->setObject(aTangFeature);
753 // Wait all constraints being removed, then send update events
754 static Events_ID aDeleteEvent = Events_Loop::eventByName(EVENT_OBJECT_DELETED);
755 bool isDeleteFlushed = Events_Loop::loop()->isFlushed(aDeleteEvent);
757 Events_Loop::loop()->setFlushed(aDeleteEvent, false);
758 // Remove all obtained constraints which use current arc, because
759 // there is no information which of them were used to build tangency arc.
760 DocumentPtr aDoc = sketch()->document();
761 for (aCIt = aCoincidence.begin(); aCIt != aCoincidence.end(); ++aCIt)
762 aDoc->removeFeature(*aCIt);
763 for (aTIt = aTangency.begin(); aTIt != aTangency.end(); ++aTIt)
764 aDoc->removeFeature(*aTIt);
765 // Send events to update the sub-features by the solver.
767 Events_Loop::loop()->setFlushed(aDeleteEvent, true);
769 Events_Loop::loop()->flush(aDeleteEvent);
771 // Wait all constraints being created, then send update events
772 static Events_ID anUpdateEvent = Events_Loop::eventByName(EVENT_OBJECT_UPDATED);
773 bool isUpdateFlushed = Events_Loop::loop()->isFlushed(anUpdateEvent);
775 Events_Loop::loop()->setFlushed(anUpdateEvent, false);
777 // Create new constraints
778 FeaturePtr aConstraint = sketch()->addFeature(SketchPlugin_ConstraintCoincidence::ID());
779 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
780 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
781 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
782 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
783 aRefAttrA->setAttr(aStartAttr);
784 aRefAttrB->setAttr(aTangPtAttr->attr());
785 aConstraint->execute();
786 ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
788 aConstraint = sketch()->addFeature(SketchPlugin_ConstraintTangent::ID());
789 aRefAttrA = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
790 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_A()));
791 aRefAttrB = std::dynamic_pointer_cast<ModelAPI_AttributeRefAttr>(
792 aConstraint->attribute(SketchPlugin_Constraint::ENTITY_B()));
793 aRefAttrA->setObject(aThisArc);
794 aRefAttrB->setObject(aTangFeature);
795 aConstraint->execute();
796 ModelAPI_EventCreator::get()->sendUpdated(aConstraint, anUpdateEvent);
798 // Send events to update the sub-features by the solver.
800 Events_Loop::loop()->setFlushed(anUpdateEvent, true);
804 void SketchPlugin_Arc::projectEndPoint()
806 std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr = std::dynamic_pointer_cast<
807 GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
808 std::shared_ptr<GeomDataAPI_Point2D> aStartAttr = std::dynamic_pointer_cast<
809 GeomDataAPI_Point2D>(data()->attribute(START_ID()));
810 std::shared_ptr<GeomDataAPI_Point2D> anEndAttr = std::dynamic_pointer_cast<
811 GeomDataAPI_Point2D>(data()->attribute(END_ID()));
813 if (aCenterAttr->pnt()->distance(aStartAttr->pnt()) < tolerance)
815 data()->blockSendAttributeUpdated(true);
816 // compute and change the arc end point
817 std::shared_ptr<GeomAPI_Circ2d> aCircleForArc(
818 new GeomAPI_Circ2d(aCenterAttr->pnt(), aStartAttr->pnt()));
819 std::shared_ptr<GeomAPI_Pnt2d> aProjection = aCircleForArc->project(anEndAttr->pnt());
820 if (aProjection && anEndAttr->pnt()->distance(aProjection) > tolerance)
821 anEndAttr->setValue(aProjection);
822 updateDependentAttributes();
823 data()->blockSendAttributeUpdated(false);