Task 2.1. Creation of ellipses and arcs of ellipse.

[modules/shaper.git] / src / SketchPlugin / SketchPlugin_Ellipse.cpp

diff --git a/src/SketchPlugin/SketchPlugin_Ellipse.cpp b/src/SketchPlugin/SketchPlugin_Ellipse.cpp
new file mode 100644 (file)
index 0000000..2317e05
--- /dev/null
+++ b/src/SketchPlugin/SketchPlugin_Ellipse.cpp
@@ -0,0 +1,132 @@
+// Copyright (C) 2017-20xx CEA/DEN, EDF R&D -->
+
+// File:        SketchPlugin_Ellipse.cpp
+// Created:     26 April 2017
+// Author:      Artem ZHIDKOV
+
+#include <SketchPlugin_Ellipse.h>
+#include <SketchPlugin_Sketch.h>
+
+#include <GeomAlgoAPI_EdgeBuilder.h>
+#include <GeomAPI_Edge.h>
+#include <GeomAPI_Ellipse.h>
+#include <GeomDataAPI_Point2D.h>
+#include <ModelAPI_AttributeDouble.h>
+#include <ModelAPI_ResultConstruction.h>
+#include <ModelAPI_Session.h>
+#include <ModelAPI_Validator.h>
+
+static const double tolerance = 1e-7;
+
+
+SketchPlugin_Ellipse::SketchPlugin_Ellipse()
+: SketchPlugin_SketchEntity()
+{
+}
+
+void SketchPlugin_Ellipse::initDerivedClassAttributes()
+{
+  data()->addAttribute(CENTER_ID(), GeomDataAPI_Point2D::typeId());
+  data()->addAttribute(FOCUS_ID(), GeomDataAPI_Point2D::typeId());
+  data()->addAttribute(MAJOR_RADIUS_ID(), ModelAPI_AttributeDouble::typeId());
+  data()->addAttribute(MINOR_RADIUS_ID(), ModelAPI_AttributeDouble::typeId());
+
+  data()->addAttribute(EXTERNAL_ID(), ModelAPI_AttributeSelection::typeId());
+  ModelAPI_Session::get()->validators()->registerNotObligatory(getKind(), EXTERNAL_ID());
+}
+
+void SketchPlugin_Ellipse::execute()
+{
+  SketchPlugin_Sketch* aSketch = sketch();
+  if(!aSketch) {
+    return;
+  }
+
+  // Compute a ellipse in 3D view.
+  std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr =
+      std::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(CENTER_ID()));
+  std::shared_ptr<GeomDataAPI_Point2D> aFocusAttr =
+      std::dynamic_pointer_cast<GeomDataAPI_Point2D>(data()->attribute(FOCUS_ID()));
+  AttributeDoublePtr aMajorRadiusAttr = real(MAJOR_RADIUS_ID());
+  AttributeDoublePtr aMinorRadiusAttr = real(MINOR_RADIUS_ID());
+  if (!aCenterAttr->isInitialized() ||
+      !aFocusAttr->isInitialized() ||
+      !aMajorRadiusAttr->isInitialized() ||
+      !aMinorRadiusAttr->isInitialized()) {
+    return;
+  }
+
+  double aMajorRadius = aMajorRadiusAttr->value();
+  double aMinorRadius = aMinorRadiusAttr->value();
+  if(aMajorRadius < tolerance || aMinorRadius < tolerance) {
+    return;
+  }
+
+  // Make a visible point.
+  SketchPlugin_Sketch::createPoint2DResult(this, aSketch, CENTER_ID(), 0);
+
+  std::shared_ptr<GeomDataAPI_Dir> aNDir = std::dynamic_pointer_cast<GeomDataAPI_Dir>(
+      aSketch->attribute(SketchPlugin_Sketch::NORM_ID()));
+
+  // Make a visible ellipse.
+  std::shared_ptr<GeomAPI_Pnt> aCenter(aSketch->to3D(aCenterAttr->x(), aCenterAttr->y()));
+  std::shared_ptr<GeomAPI_Pnt> aFocus(aSketch->to3D(aFocusAttr->x(), aFocusAttr->y()));
+  std::shared_ptr<GeomAPI_Dir> aNormal = aNDir->dir();
+  std::shared_ptr<GeomAPI_Dir> aMajorAxis(new GeomAPI_Dir(aFocus->x() - aCenter->x(),
+      aFocus->y() - aCenter->y(), aFocus->z() - aCenter->z()));
+
+  std::shared_ptr<GeomAPI_Shape> anEllipseShape =
+      GeomAlgoAPI_EdgeBuilder::ellipse(aCenter, aNormal, aMajorAxis, aMajorRadius, aMinorRadius);
+
+  std::shared_ptr<ModelAPI_ResultConstruction> aResult = document()->createConstruction(data(), 1);
+  aResult->setShape(anEllipseShape);
+  aResult->setIsInHistory(false);
+  setResult(aResult, 1);
+}
+
+void SketchPlugin_Ellipse::move(double theDeltaX, double theDeltaY)
+{
+  std::shared_ptr<ModelAPI_Data> aData = data();
+  if(!aData->isValid()) {
+    return;
+  }
+
+  std::shared_ptr<GeomDataAPI_Point2D> aPoint = std::dynamic_pointer_cast<GeomDataAPI_Point2D>(
+      aData->attribute(CENTER_ID()));
+  if(aPoint->isInitialized()) {
+    aPoint->move(theDeltaX, theDeltaY);
+  }
+}
+
+bool SketchPlugin_Ellipse::isFixed() {
+  return data()->selection(EXTERNAL_ID())->context().get() != NULL;
+}
+
+void SketchPlugin_Ellipse::attributeChanged(const std::string& theID) {
+  // the second condition for unability to move external segments anywhere
+  if (theID == EXTERNAL_ID() || isFixed()) {
+    std::shared_ptr<GeomAPI_Shape> aSelection = data()->selection(EXTERNAL_ID())->value();
+    if (!aSelection) {
+      // empty shape in selection shows that the shape is equal to context
+      ResultPtr anExtRes = selection(EXTERNAL_ID())->context();
+      if (anExtRes)
+        aSelection = anExtRes->shape();
+    }
+    // update arguments due to the selection value
+    if (aSelection && !aSelection->isNull() && aSelection->isEdge()) {
+      std::shared_ptr<GeomAPI_Edge> anEdge( new GeomAPI_Edge(aSelection));
+      std::shared_ptr<GeomAPI_Ellipse> anEllipse = anEdge->ellipse();
+
+      std::shared_ptr<GeomDataAPI_Point2D> aCenterAttr =
+          std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(CENTER_ID()));
+      aCenterAttr->setValue(sketch()->to2D(anEllipse->center()));
+
+      std::shared_ptr<GeomDataAPI_Point2D> aFocusAttr =
+          std::dynamic_pointer_cast<GeomDataAPI_Point2D>(attribute(FOCUS_ID()));
+      aFocusAttr->setValue(sketch()->to2D(anEllipse->firstFocus()));
+
+      real(MAJOR_RADIUS_ID())->setValue(anEllipse->majorRadius());
+      real(MINOR_RADIUS_ID())->setValue(anEllipse->minorRadius());
+    }
+  }
+}