+ // Constraint for fixed entity
+ if (aConstraintKind.compare(SketchPlugin_ConstraintRigid::ID()) == 0) {
+ // Verify that only one entity is filled
+ int aNbAttrs = 0;
+ for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
+ std::shared_ptr<ModelAPI_Attribute> anAttr =
+ aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
+ AttrType aType = typeOfAttribute(anAttr);
+ if (aType != UNKNOWN)
+ myAttributesList[aNbAttrs++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
+ }
+ if (aNbAttrs == 1)
+ myType = SLVS_C_WHERE_DRAGGED;
+ return getType();
+ }
+
+ // Constraint for horizontal/vertical line
+ bool isHorizontal = (aConstraintKind.compare(SketchPlugin_ConstraintHorizontal::ID()) == 0);
+ bool isVertical = (aConstraintKind.compare(SketchPlugin_ConstraintVertical::ID()) == 0);
+ if (isHorizontal || isVertical) {
+ int aNbEntities = 2; // lines in SolveSpace constraints should start from SketchPlugin_Constraint::ENTITY_C() attribute
+ for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
+ std::shared_ptr<ModelAPI_Attribute> anAttr =
+ aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
+ if (typeOfAttribute(anAttr) == LINE)
+ myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
+ }
+ if (aNbEntities == 3)
+ myType = isHorizontal ? SLVS_C_HORIZONTAL : SLVS_C_VERTICAL;
+ return getType();
+ }
+
+ if (aConstraintKind.compare(SketchPlugin_ConstraintEqual::ID()) == 0)
+ {
+ static const int aConstrType[3] = {
+ SLVS_C_EQUAL_RADIUS,
+ SLVS_C_EQUAL_LINE_ARC_LEN,
+ SLVS_C_EQUAL_LENGTH_LINES
+ };
+ int aNbLines = 0;
+ int aNbEntities = 2; // lines and circles in SolveSpace constraints should start from SketchPlugin_Constraint::ENTITY_C() attribute
+ for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
+ std::shared_ptr<ModelAPI_Attribute> anAttr =
+ aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
+ AttrType aType = typeOfAttribute(anAttr);
+ if (aType == LINE) {
+ myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
+ aNbLines++;
+ }
+ else if (aType == CIRCLE || aType == ARC)
+ myAttributesList[aNbEntities++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
+ }
+ if (aNbEntities == 4)
+ myType = aConstrType[aNbLines];
+ return getType();
+ }
+
+ if (aConstraintKind.compare(SketchPlugin_ConstraintTangent::ID()) == 0)
+ {
+ static const int anArcPosDefault = 2;
+ static const int aLinePosDefault = 3;
+ int anArcPos = anArcPosDefault; // arc in tangency constraint should be placed before line
+ int aLinePos = aLinePosDefault;
+ for (unsigned int indAttr = 0; indAttr < CONSTRAINT_ATTR_SIZE; indAttr++) {
+ std::shared_ptr<ModelAPI_Attribute> anAttr =
+ aConstrData->attribute(SketchPlugin_Constraint::ATTRIBUTE(indAttr));
+ AttrType aType = typeOfAttribute(anAttr);
+ if (aType == LINE && aLinePos < CONSTRAINT_ATTR_SIZE)
+ myAttributesList[aLinePos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
+ else if (aType == ARC)
+ myAttributesList[anArcPos++] = SketchPlugin_Constraint::ATTRIBUTE(indAttr);
+ }
+ if (anArcPos - anArcPosDefault + aLinePos - aLinePosDefault == 2)
+ myType = aLinePos > 3 ? SLVS_C_ARC_LINE_TANGENT : SLVS_C_CURVE_CURVE_TANGENT;
+ return getType();
+ }
+
+ /// \todo Implement other kind of constraints