Changes in src/Shapes/Shape.cpp [205d9b:c6f395]

File:

• src/Shapes/Shape.cpp (modified) (6 diffs)

src/Shapes/Shape.cpp

@@ -9 +9 @@
 #include "Shape_impl.hpp"
 
+#include "Helpers/Assert.hpp"
+
+#include <string>
+
+using namespace std;
+
 Shape::Shape(const Shape& src) :
   impl(src.getImpl())
@@ -17 +23 @@
 bool Shape::isInside(const Vector &point) const{
   return impl->isInside(point);
+}
+
+bool Shape::isOnSurface(const Vector &point) const{
+  return impl->isOnSurface(point);
+}
+
+Vector Shape::getNormal(const Vector &point) const throw (NotOnSurfaceException){
+  return impl->getNormal(point);
+}
+
+LineSegmentSet Shape::getLineIntersections(const Line &line){
+  return impl->getLineIntersections(line);
 }
 
@@ -30 +48 @@
 }
 
+std::string Shape::toString() const{
+  return impl->toString();
+}
+
 Shape::impl_ptr Shape::getImpl() const{
   return impl;
@@ -65 +87 @@
 }
 
+bool AndShape_impl::isOnSurface(const Vector &point){
+  // check the number of surfaces that this point is on
+  int surfaces =0;
+  surfaces += lhs->isOnSurface(point);
+  surfaces += rhs->isOnSurface(point);
+
+  switch(surfaces){
+    case 0:
+      return false;
+      // no break necessary
+    case 1:
+      // if it is inside for the object where it does not lie on
+      // the surface the whole point lies inside
+      return (lhs->isOnSurface(point) && rhs->isInside(point)) ||
+             (rhs->isOnSurface(point) && lhs->isInside(point));
+      // no break necessary
+    case 2:
+      {
+        // it lies on both Shapes... could be an edge or an inner point
+        // test the direction of the normals
+        Vector direction=lhs->getNormal(point)+rhs->getNormal(point);
+        // if the directions are opposite we lie on the inside
+        return !direction.IsZero();
+      }
+      // no break necessary
+    default:
+      // if this happens there is something wrong
+      ASSERT(0,"Default case should have never been used");
+  }
+  return false; // never reached
+}
+
+Vector AndShape_impl::getNormal(const Vector &point) throw (NotOnSurfaceException){
+  Vector res;
+  if(!isOnSurface(point)){
+    throw NotOnSurfaceException(__FILE__,__LINE__);
+  }
+  res += lhs->isOnSurface(point)?lhs->getNormal(point):zeroVec;
+  res += rhs->isOnSurface(point)?rhs->getNormal(point):zeroVec;
+  res.Normalize();
+  return res;
+}
+
+LineSegmentSet AndShape_impl::getLineIntersections(const Line &line){
+  return intersect(lhs->getLineIntersections(line),rhs->getLineIntersections(line));
+}
+
+string AndShape_impl::toString(){
+  return string("(") + lhs->toString() + string("&&") + rhs->toString() + string(")");
+}
+
 Shape operator&&(const Shape &lhs,const Shape &rhs){
   Shape::impl_ptr newImpl = Shape::impl_ptr(new AndShape_impl(getShapeImpl(lhs),getShapeImpl(rhs)));
@@ -82 +155 @@
 }
 
+bool OrShape_impl::isOnSurface(const Vector &point){
+  // check the number of surfaces that this point is on
+  int surfaces =0;
+  surfaces += lhs->isOnSurface(point);
+  surfaces += rhs->isOnSurface(point);
+
+  switch(surfaces){
+    case 0:
+      return false;
+      // no break necessary
+    case 1:
+      // if it is inside for the object where it does not lie on
+      // the surface the whole point lies inside
+      return (lhs->isOnSurface(point) && !rhs->isInside(point)) ||
+             (rhs->isOnSurface(point) && !lhs->isInside(point));
+      // no break necessary
+    case 2:
+      {
+        // it lies on both Shapes... could be an edge or an inner point
+        // test the direction of the normals
+        Vector direction=lhs->getNormal(point)+rhs->getNormal(point);
+        // if the directions are opposite we lie on the inside
+        return !direction.IsZero();
+      }
+      // no break necessary
+    default:
+      // if this happens there is something wrong
+      ASSERT(0,"Default case should have never been used");
+  }
+  return false; // never reached
+}
+
+Vector OrShape_impl::getNormal(const Vector &point) throw (NotOnSurfaceException){
+  Vector res;
+  if(!isOnSurface(point)){
+    throw NotOnSurfaceException(__FILE__,__LINE__);
+  }
+  res += lhs->isOnSurface(point)?lhs->getNormal(point):zeroVec;
+  res += rhs->isOnSurface(point)?rhs->getNormal(point):zeroVec;
+  res.Normalize();
+  return res;
+}
+
+LineSegmentSet OrShape_impl::getLineIntersections(const Line &line){
+  return merge(lhs->getLineIntersections(line),rhs->getLineIntersections(line));
+}
+
+string OrShape_impl::toString(){
+  return string("(") + lhs->toString() + string("||") + rhs->toString() + string(")");
+}
+
 Shape operator||(const Shape &lhs,const Shape &rhs){
   Shape::impl_ptr newImpl = Shape::impl_ptr(new OrShape_impl(getShapeImpl(lhs),getShapeImpl(rhs)));
@@ -99 +223 @@
 }
 
+bool NotShape_impl::isOnSurface(const Vector &point){
+  return arg->isOnSurface(point);
+}
+
+Vector NotShape_impl::getNormal(const Vector &point) throw(NotOnSurfaceException){
+  return -1*arg->getNormal(point);
+}
+
+LineSegmentSet NotShape_impl::getLineIntersections(const Line &line){
+  return invert(arg->getLineIntersections(line));
+}
+
+string NotShape_impl::toString(){
+  return string("!") + arg->toString();
+}
+
 Shape operator!(const Shape &arg){
   Shape::impl_ptr newImpl = Shape::impl_ptr(new NotShape_impl(getShapeImpl(arg)));
   return Shape(newImpl);
 }
+
+/**************** global operations *********************************/
+ostream &operator<<(ostream &ost,const Shape &shape){
+  ost << shape.toString();
+  return ost;
+}