BoundBox Class

BoundBox Class

Members

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BoundBox ( ) #

Constructor. Creates an empty bounding box.

BoundBox ( BoundBox bb ) #

Initialization by the bounding box.

Arguments

• BoundBox bb - Bounding box.

explicit BoundBox ( BoundSphere bs ) #

Initialization by the bounding sphere.

Arguments

• BoundSphere bs - Bounding sphere.

BoundBox ( BoundBox bb, mat4 transform ) #

Initialization by the bounding box with the transformation matrix taken into account.

Arguments

• BoundBox bb - Bounding box.
• mat4 transform - Transformation matrix.

BoundBox ( vec3[] points ) #

Initialization by the array of points.

Arguments

• vec3[] points - Array of points.

BoundBox ( vec3 min, vec3 max ) #

Initialization by minimum and maximum coordinates of the bounding box.

Arguments

• vec3 min - Bounding box minimum coordinates.
• vec3 max - Bounding box maximum coordinates.

void clear ( ) #

Clears the bounding box.

void set ( vec3 min, vec3 max ) #

Sets the bounding box by its minimum and maximum coordinates.

Arguments

• vec3 min - Minimum coordinates of the bounding box.
• vec3 max - Maximum coordinates of the bounding box.

void set ( vec3[] points ) #

Sets the bounding box by the coordinates of points in space to be enclosed by it.

Arguments

• vec3[] points - Array of points to be enclosed by the bounding box.

void set ( BoundSphere bs ) #

Sets the bounding box by the bounding sphere.

Arguments

• BoundSphere bs - Bounding sphere.

void set ( BoundBox bb ) #

Sets the bounding box equal to the specified source bounding box.

Arguments

• BoundBox bb - Source bounding box.

void set ( BoundBox bb, mat4 transform ) #

Sets the bounding box by the given bounding box with the given transformation matrix taken into account.

Arguments

• BoundBox bb - Bounding box.
• mat4 transform - Transformation matrix.

void setTransform ( mat4 transform ) #

Sets the given transformation matrix to the bounding box.

Arguments

• mat4 transform - Transformation matrix.

void setTransform ( dmat4 transform ) #

Sets the given transformation matrix to the bounding box.

Arguments

• dmat4 transform - Transformation matrix.

void setTransform ( BoundSphere bs, mat4 transform ) #

Sets the transformation matrix of the current bounding box for including the given bounding sphere with the given transformation matrix taken into account.

Arguments

• BoundSphere bs - Bounding sphere.
• mat4 transform - Transformation matrix.

void setTransform ( BoundSphere bs, dmat4 transform ) #

Sets the transformation matrix of the current bounding box for including the given bounding sphere with the given transformation matrix taken into account.

Arguments

• BoundSphere bs - Bounding sphere.
• dmat4 transform - Transformation matrix.

int compare ( BoundBox bb ) #

Compares the current bounding box with the given one.

Arguments

• BoundBox bb - The bounding box to compare with.

Return value

1 if the size and position of both bounding boxes are equal; otherwise, 0.

void expand ( vec3 point ) #

Expands the current bounding box to enclose the given point.

Arguments

• vec3 point - Point coordinates.

void expand ( vec3[] points ) #

Expands the current bounding box to enclose all given points.

Arguments

• vec3[] points - Array of points to be enclosed by the bounding box.

void expand ( BoundSphere bs ) #

Expands the current bounding box to enclose the given bounding sphere.

Arguments

• BoundSphere bs - Bounding sphere.

void expand ( BoundBox bb ) #

Expands the current bounding box to enclose the given bounding box.

Arguments

• BoundBox bb - Bounding box.

int inside ( vec3 point ) #

Checks if the given point is inside the bounding box.

Arguments

• vec3 point - Point.

Return value

1 if the point is inside the bounding box; otherwise, 0.

int inside ( vec3 point, float radius ) #

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

Arguments

• vec3 point - Coordinates of the center of the sphere.
• float radius - Sphere radius.

Return value

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

int inside ( vec3 min, vec3 max ) #

Checks if the box with the given coordinates is inside the current bounding box.

Arguments

• vec3 min - Minimum coordinates of the box.
• vec3 max - Maximum coordinates of the box.

Return value

1 if the box is inside the bounding box; otherwise, 0.

int inside ( BoundSphere bs ) #

Checks if the specified bounding sphere is inside the current bounding box.

Arguments

• BoundSphere bs - Bounding sphere.

Return value

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

int inside ( BoundBox bb ) #

Checks if the specified bounding box is inside the current bounding box.

Arguments

• BoundBox bb - Bounding box.

Return value

1 if the bounding box is inside the bounding box; otherwise, 0.

int insideAll ( BoundSphere bs ) #

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

Arguments

• BoundSphere bs - Bounding sphere.

Return value

1 if the whole bounding sphere is inside the bounding box; otherwise, 0.

int insideAll ( BoundBox bb ) #

Checks if the whole given bounding box is inside the current bounding box.

Arguments

• BoundBox bb - Bounding box.

Return value

1 if the whole bounding box is inside the bounding box; otherwise, 0.

int insideCube ( int face, vec3 offset ) #

Checks if a face of the current bounding box is inside the cube represented by minimum and maximum coordinates of the bounding box.

Arguments

• int face - The face index from 0 to 5.
• vec3 offset - Offset.

Return value

1 if the face is inside the bounding cube; otherwise, 0.

int rayIntersection ( vec3 point, vec3 direction ) #

Checks for an intersection between a ray and the current bounding box.

Arguments

• vec3 point - Starting point of the ray.
• vec3 direction - Direction vector of the ray.

Return value

1 if the given ray intersects the bounding box; otherwise, 0.

int irayIntersection ( vec3 point, vec3 idirection ) #

Checks for an intersection between a ray and the current bounding box. This function uses the inverse direction of the ray, which increases performance.

Arguments

• vec3 point - Starting point of the ray.
• vec3 idirection - Inverse direction of the ray.

Return value

1 if the given ray intersects the bounding box; otherwise, 0.

int getIntersection ( vec3 p0, vec3 p1 ) #

Checks for an intersection between a line and the current bounding box.

Arguments

• vec3 p0 - Starting point of the line.
• vec3 p1 - Enging point of the line.

Return value

1 if the given line intersects the bounding box; otherwise, 0.

float distance ( ) #

Returns the distance from the origin of coordinates to the closest vertex of the bounding box.

Return value

Distance in units if the minimum and maximum coordinates of the bounding box are valid; otherwise, INF.

float distance ( vec3 point ) #

Returns the distance from the given point to the closest vertex of the bounding box.

Arguments

• vec3 point - Coordinates of a point.

Return value

Distance, in units.

void getPoints ( vec3[] points, int num_points ) #

Puts the vertices of the current bounding box into the given array.

Arguments

• vec3[] points - Target array.
• int num_points - Number of points, must be equal to 8.

void getPlanes ( vec4[] planes, int num_planes ) #

Puts the planes created based on the vertices of the current bounding box into the given array.

Arguments

• vec4[] planes - Target array.
• int num_planes - Number of planes, must be equal to 6.

vec3 getCenter ( ) #

Returns the center point of the current bounding box.

Return value

Center point.

vec3 getMin ( ) #

Returns the minimum coordinates of the bounding box.

Return value

Bounding box minimum coordinates.

vec3 getMax ( ) #

Returns the maximum coordinates of the bounding box.

Return value

Bounding box maximum coordinates.

bool isValid ( ) #

Checks the bounding box status.

Return value

true if the bounding box minimum and maximum coordinates are valid; otherwise, false.