WorldBoundFrustum Class

This class serves to construct the bounding frustum in double precision coordinates.

WorldBoundFrustum Class

Members

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WorldBoundFrustum()

Default constructor.

void set(variable v)

Depending on the variable passed as argument, the function sets the bounding frustum by the given bounding sphere or the bounding box.

Arguments

• variable v - Argument of one of the following types:
  • WorldBoundSphere bs - The bounding sphere.
  • WorldBoundBox bb - The bounding box.

void set(variable v0, variable v1)

Sets the bounding frustum. The function can receive the following arguments:

• dmat4 projection and dmat4 modelview - projection and modelview matrices.
• WorldBoundFrustum bf and dmat4 itransform - the bounding frustum and inverse transformation matrix.

Arguments

• variable v0 - Argument of one of the following types:
  • dmat4 projection - Projection matrix.
  • WorldBoundFrustum bf - The bounding frustum.
• variable v1 - Argument of one of the following types:
  • dat4 modelview - Modelview matrix.
  • dmat4 itransform - Inverse transformation matrix.

dvec3 getCamera()

Returns the position of the camera.

Return value

Camera position.

int isValid()

Checks if the bounding frustum is valid.

Return value

1 if the bounding frustum is valid; otherwise, 0.

BoundFrustum(WorldBoundFrustum bf)

Constructor. Creates a bounding frustum initialized by the bounding frustum.

Arguments

• WorldBoundFrustum bf - Bounding frustum.

BoundFrustum(variable v0, variable v1)

Constructor. Creates a bounding frustum initialized by one of the following:

• dmat4 projection and dmat4 modelview - projection and modelview matrices.
• WorldBoundFrustum bf and dmat4 itransform - the bounding frustum and inverse transformation matrix.

Arguments

• variable v0 - Argument of one of the following types:
  • dmat4 projection - Projection matrix.
  • WorldBoundFrustum bf - The bounding frustum.
• variable v1 - Argument of one of the following types:
  • dmat4 modelview - Modelview matrix.
  • dmat4 itransform - Inverse transformation matrix.

int inside(variable v)

Depending on the variable passed as an argument, the function performs the following:

• If dvec3 is passed, the function checks if the given point is inside the current bounding frustum.
• If WorldBoundBox is passed, the function checks if the given bounding box is inside the current bounding frustum.
• If WorldBoundSphere is passed, the function checks if the given bounding sphere is inside the current bounding frustum.

Arguments

• variable v - Argument of one of the following types:
  • dvec3 point - Coordinates of the point.
  • WorldBoundSphere bs - The bounding sphere.
  • WorldBoundBox bb - The bounding box.

Return value

1 if the bounding box or the bounding sphere or the point is inside the current bounding frustum; otherwise, 0.

int inside(variable v0, variable v1)

Checks if the specified sphere or the box is inside the current bounding frustum. Variables, passed as arguments, can be the following:

• dvec3 point and double radius
• dvec3 min and dvec3 max

Arguments

• variable v0 - Argument of one of the following types:
  • dvec3 point - Coordinates of the sphere center.
  • dvec3 min - Bounding box minimum coordinates.
• variable v1 - Argument of one of the following types:
  • double radius - Radius of the bounding sphere.
  • dvec3 max - Bounding box maximum coordinates.

Return value

1 if the specified sphere inside the current bounding frustum, otherwise, 0.

int insideAll(variable v)

Checks if the given bounding sphere or the bounding box is inside the current bounding frustum.

Arguments

• variable v - Argument of one of the following types:
  • WorldBoundSphere bs - The bounding sphere.
  • WorldBoundBox bb - The bounding box.

Return value

1 if the given bounding sphere of the bounding box is inside the bounding frustum; otherwise, 0.