CSG Namespace Reference

Classes
class	CSGBase
	CSGBase creates an internal representation of a Constructive Solid Geometry (CSG) model. More...
class	CSGCell
	CSGCell creates an internal representation of a Constructive Solid Geometry (CSG) cell, which represents a region of space filled by a material or void. More...
class	CSGCellList
	CSGCellList creates a container for CSGCell objects to pass to CSGBase object. More...
class	CSGPlane
	CSGPlane creates an internal representation of a Constructive Solid Geometry (CSG) plane, represented in the form aX + bY + cZ = d. More...
class	CSGRegion
	CSGRegions creates an internal representation of a CSG region, which can refer to an intersection, union, complement, or half-space. More...
class	CSGSphere
	CSGSphere creates an internal representation of a Constructive Solid Geometry (CSG) sphere, represented in the form (x - x0)^2 + (y - y0)^2 + (z - z0)^2 = r^2. More...
class	CSGSurface
	CSGSurface creates an internal representation of a Constructive Solid Geometry (CSG) surface, represented as some polynomial in x, y, and z. More...
class	CSGSurfaceList
	CSGSurfaceList is a container for storing CSGSurface objects in the CSGBase object. More...
class	CSGUniverse
	CSGUniverse creates an internal representation of a Constructive Solid Geometry (CSG) universe, which represents a collection of cells that can be defined repeatedly within a separate container of cells. More...
class	CSGUniverseList
	CSGUniverseList creates a container for CSGUniverse objects to pass to CSGBase. More...
class	CSGXCylinder
	CSGXCylinder creates an internal representation of a Constructive Solid Geometry (CSG) x-axis aligned cylinder, represented in the following form (y - y0)^2 + (z - z0)^2 = r^2. More...
class	CSGYCylinder
	CSGYCylinder creates an internal representation of a Constructive Solid Geometry (CSG) y-axis aligned cylinder, represented in the following form (x - x0)^2 + (z - z0)^2 = r^2. More...
class	CSGZCylinder
	CSGZCylinder creates an internal representation of a Constructive Solid Geometry (CSG) z-axis aligned cylinder, represented in the following form (x - x0)^2 + (y - y0)^2 = r^2. More...

Functions
const std::string	stripRegionString (std::string region_str, std::string op)
	strip the leading and trailing parentheses from the string if only the specified operator is present in the string More...
const CSGRegion	operator+ (const CSGSurface &surf)
	Operation overloads for operation based region construction. More...
const CSGRegion	operator- (const CSGSurface &surf)
	Overload for creating a region from the negative half-space (-) of a surface. More...
const CSGRegion	operator & (const CSGRegion &region_a, const CSGRegion &region_b)
	Overload for creating a region from the the intersection (&) of two regions. More...
const CSGRegion	operator| (const CSGRegion &region_a, const CSGRegion &region_b)
	Overload for creating a region from the union (|) of two regions. More...
const CSGRegion	operator~ (const CSGRegion &region)
	Overload for creating a region from the complement (~) of another region. More...
const CSGRegion	operator & (const CSGRegion &region_a, const CSGRegion &region_b)
	Overload for creating a region from the the intersection (&) of two regions. More...

Function Documentation

operator &() [1/2]

const CSGRegion CSG::operator&	(	const CSGRegion &	region_a,
		const CSGRegion &	region_b
	)

Overload for creating a region from the the intersection (&) of two regions.

Definition at line 147 of file CSGRegion.C.

{
  return CSGRegion(region_a, region_b, "INTERSECTION");
}

operator &() [2/2]

const CSGRegion CSG::operator&	(	const CSGRegion &	region_a,
		const CSGRegion &	region_b
	)

Overload for creating a region from the the intersection (&) of two regions.

Definition at line 147 of file CSGRegion.C.

{
  return CSGRegion(region_a, region_b, "INTERSECTION");
}

operator+()

const CSGRegion CSG::operator+

(

const CSGSurface &

surf

)

Operation overloads for operation based region construction.

Overload for creating a region from the positive half-space (+) of a surface

Definition at line 133 of file CSGRegion.C.

{
  return CSGRegion(surf, CSGSurface::Halfspace::POSITIVE);
}

operator-()

const CSGRegion CSG::operator-

(

const CSGSurface &

surf

)

Overload for creating a region from the negative half-space (-) of a surface.

Definition at line 140 of file CSGRegion.C.

{
  return CSGRegion(surf, CSGSurface::Halfspace::NEGATIVE);
}

operator|()

const CSGRegion CSG::operator|	(	const CSGRegion &	region_a,
		const CSGRegion &	region_b
	)

Overload for creating a region from the union (|) of two regions.

Definition at line 154 of file CSGRegion.C.

{
  return CSGRegion(region_a, region_b, "UNION");
}

operator~()

const CSGRegion CSG::operator~

(

const CSGRegion &

region

)

Overload for creating a region from the complement (~) of another region.

Definition at line 161 of file CSGRegion.C.

{
  return CSGRegion(region, "COMPLEMENT");
}

stripRegionString()

const std::string CSG::stripRegionString	(	std::string	region_str,
		std::string	op
	)

strip the leading and trailing parentheses from the string if only the specified operator is present in the string

Parameters

region_str	region string representation to simplify
op	operator to consider

Returns

region string with () removed if applicable

Definition at line 94 of file CSGRegion.C.

Referenced by CSG::CSGRegion::CSGRegion().

{
  // add expected spacing around operator if not provided
  if (op == "|")
    op = " | ";
  if (op == "&")
    op = " & ";

  std::vector<std::string> ops_list = {" | ", " & ", "~"};
  if (op.compare(" | ") && op.compare(" & "))
  { // compare() returns non zero if strings are not equal
    mooseError(
        "Region string can only be simplified based on intersection (&) and union (|) operations.");
  }

  // find if there are any operators in string already that are not the op of interest
  // if not, then remove parentheses:
  bool remove_par = true; // assume parentheses can be removed unless otherwise
  for (auto opi : ops_list)
    if (opi != op)
      // only look for strings that are not of the current op type
      if (region_str.find(opi) != std::string::npos)
      {
        remove_par = false;
        break;
      }

  if (remove_par)
    region_str.erase(std::remove_if(region_str.begin(),
                                    region_str.end(),
                                    [](char c) { return c == '(' || c == ')'; }),
                     region_str.end());
  return region_str;
}