PLYVisitor Class Reference

Visitor that visits scene elements and creates an ASCII PLY file. More...

#include <avogadro/rendering/plyvisitor.h>

Inheritance diagram for PLYVisitor:

Public Member Functions
	PLYVisitor (const Camera &camera)
void	setBinary (bool binary)
bool	binary () const
bool	write (std::ostream &out) const
std::string	end ()
void	setCamera (const Camera &c)
Camera	camera () const
void	setBackgroundColor (const Vector3ub &c)
void	setAmbientColor (const Vector3ub &c)
void	setAspectRatio (float ratio)
void	setCenter (const Vector3f &center)
Vector3f	center () const
void	setScale (float scale)
float	scale () const
Public Member Functions inherited from TessellatingVisitor
void	begin ()
void	clear ()
const std::vector< TessellatedMesh > &	meshes () const
bool	bounds (Vector3f &minimum, Vector3f &maximum) const
void	setSphereLevelRange (unsigned int minLevel, unsigned int maxLevel)
unsigned int	sphereLevelForRadius (float radius)
float	sphereMaxEdgeAngle (unsigned int level)
void	visit (Node &) override
void	visit (GroupNode &) override
void	visit (GeometryNode &) override
void	visit (Drawable &) override
void	visit (SphereGeometry &geometry) override
void	visit (CurveGeometry &geometry) override
void	visit (CylinderGeometry &geometry) override
void	visit (MeshGeometry &geometry) override
void	visit (TextLabel2D &) override
void	visit (TextLabel3D &) override
void	visit (LineStripGeometry &geometry) override
void	visit (WideLineGeometry &geometry) override
void	visit (DashedLineGeometry &geometry) override
void	visit (ArrowGeometry &geometry) override
void	visit (VolumeGeometry &) override
void	setTessellationTolerance (float angstrom)
float	tessellationTolerance () const
void	setSphereSubdivisions (unsigned int level)
unsigned int	sphereSubdivisions () const
void	useAdaptiveSpheres ()
void	setCylinderSides (unsigned int sides)
unsigned int	cylinderSides () const
void	useAdaptiveCylinders ()
unsigned int	cylinderSidesForRadius (float radius) const
void	setLineRadius (float radius)
float	lineRadius () const

Detailed Description

The scene is tessellated by TessellatingVisitor; write() and end() output all the resulting triangles as one PLY mesh with per-vertex positions, normals and RGBA colours (uchar).

The default format is binary_little_endian, written byte by byte so it does not depend on the host byte order: 28 bytes per vertex (6 floats, 4 uchar) and 13 bytes per face (uchar 3, 3 uint). Detailed scenes have millions of vertices, so prefer write() to a stream over end(). ASCII is available with setBinary(false).

Member Function Documentation

setCenter()

void setCenter

(

const Vector3f &

center

)

Output transform, applied to positions when writing only: p_out = (p - center) * scale. Normals are unchanged. The tessellated meshes (and the tessellation tolerance) stay in Angstrom. The defaults (origin, 1) leave positions as they are. A non-finite or non-positive scale is ignored.

center()

Vector3f center

(

)

const

Output transform, applied to positions when writing only: p_out = (p - center) * scale. Normals are unchanged. The tessellated meshes (and the tessellation tolerance) stay in Angstrom. The defaults (origin, 1) leave positions as they are. A non-finite or non-positive scale is ignored.

setScale()

void setScale

(

float

scale

)

Output transform, applied to positions when writing only: p_out = (p - center) * scale. Normals are unchanged. The tessellated meshes (and the tessellation tolerance) stay in Angstrom. The defaults (origin, 1) leave positions as they are. A non-finite or non-positive scale is ignored.

scale()

float scale

(

)

const

Output transform, applied to positions when writing only: p_out = (p - center) * scale. Normals are unchanged. The tessellated meshes (and the tessellation tolerance) stay in Angstrom. The defaults (origin, 1) leave positions as they are. A non-finite or non-positive scale is ignored.

setBinary()

void setBinary

(

bool

binary

)

Binary little-endian (default) or ASCII output.

write()

bool write

(

std::ostream &

out

)

const

Stream the PLY file for everything visited since begin().

Returns

false if the stream failed.

end()

std::string end

(

)

The whole PLY file in memory (via write()); binary data if binary().

---

The documentation for this class was generated from the following file:

• plyvisitor.h