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# irr::scene::IMeshManipulator Class Reference

An interface for easy manipulation of meshes. More...

`#include <IMeshManipulator.h>`

Inheritance diagram for irr::scene::IMeshManipulator:

List of all members.

## Public Member Functions

template<typename Functor >
bool | apply (const Functor &func, IMesh *mesh, bool boundingBoxUpdate=false) const
| Apply a manipulator on the Mesh.
template<typename Functor >
bool | apply (const Functor &func, IMeshBuffer *buffer, bool boundingBoxUpdate=false) const
| Apply a manipulator on the Meshbuffer.
virtual IAnimatedMesh * | createAnimatedMesh (IMesh *mesh, scene::E_ANIMATED_MESH_TYPE type=scene::EAMT_UNKNOWN) const =0
| Create a new AnimatedMesh and adds the mesh to it.
virtual SMesh * | createMeshCopy (IMesh *mesh) const =0
| Clones a static IMesh into a modifiable SMesh.
virtual IMesh * | createMeshUniquePrimitives (IMesh *mesh) const =0
| Creates a copy of a mesh with all vertices unwelded.
virtual IMesh * | createMeshWelded (IMesh *mesh, f32 tolerance=core::ROUNDING_ERROR_f32) const =0
| Creates a copy of a mesh with vertices welded.
virtual IMesh * | createMeshWith1TCoords (IMesh *mesh) const =0
| Creates a copy of the mesh, which will only consist of S3DVertex vertices.
virtual IMesh * | createMeshWith2TCoords (IMesh *mesh) const =0
| Creates a copy of the mesh, which will only consist of S3DVertex2TCoord vertices.
virtual IMesh * | createMeshWithTangents (IMesh *mesh, bool recalculateNormals=false, bool smooth=false, bool angleWeighted=false, bool recalculateTangents=true) const =0
| Creates a copy of the mesh, which will only consist of S3DVertexTangents vertices.
virtual void | flipSurfaces (IMesh *mesh) const =0
| Flips the direction of surfaces.
virtual s32 | getPolyCount (IAnimatedMesh *mesh) const =0
| Get amount of polygons in mesh.
virtual s32 | getPolyCount (IMesh *mesh) const =0
| Get amount of polygons in mesh.
virtual void | makePlanarTextureMapping (scene::IMeshBuffer *buffer, f32 resolutionS, f32 resolutionT, u8 axis, const core::vector3df &offset) const =0
| Creates a planar texture mapping on the meshbuffer.
virtual void | makePlanarTextureMapping (scene::IMeshBuffer *meshbuffer, f32 resolution=0.001f) const =0
| Creates a planar texture mapping on the meshbuffer.
virtual void | makePlanarTextureMapping (IMesh *mesh, f32 resolution=0.001f) const =0
| Creates a planar texture mapping on the mesh.
virtual void | recalculateNormals (IMeshBuffer *buffer, bool smooth=false, bool angleWeighted=false) const =0
| Recalculates all normals of the mesh buffer.
virtual void | recalculateNormals (IMesh *mesh, bool smooth=false, bool angleWeighted=false) const =0
| Recalculates all normals of the mesh.
virtual void | recalculateTangents (IMesh *mesh, bool recalculateNormals=false, bool smooth=false, bool angleWeighted=false) const =0
| Recalculates tangents, requires a tangent mesh.
void | scale (IMeshBuffer *buffer, const core::vector3df &factor) const
| Scales the actual meshbuffer, not a scene node.
void | scale (IMesh *mesh, const core::vector3df &factor) const
| Scales the actual mesh, not a scene node.
void | scaleMesh (IMesh *mesh, const core::vector3df &factor) const
| Scales the actual mesh, not a scene node.
void | scaleTCoords (scene::IMeshBuffer *buffer, const core::vector2df &factor, u32 level=1) const
| Scale the texture coords of a meshbuffer.
void | scaleTCoords (scene::IMesh *mesh, const core::vector2df &factor, u32 level=1) const
| Scale the texture coords of a mesh.
void | setVertexColorAlpha (IMesh *mesh, s32 alpha) const
| Sets the alpha vertex color value of the whole mesh to a new value.
void | setVertexColors (IMesh *mesh, video::SColor color) const
| Sets the colors of all vertices to one color.
void | transform (IMeshBuffer *buffer, const core::matrix4 &m) const
| Applies a transformation to a meshbuffer.
void | transform (IMesh *mesh, const core::matrix4 &m) const
| Applies a transformation to a mesh.
virtual void | transformMesh (IMesh *mesh, const core::matrix4 &m) const
| Applies a transformation to a mesh.

## Protected Member Functions

template<typename Functor >
bool | apply_ (const Functor &func, IMeshBuffer *buffer, bool boundingBoxUpdate, const IVertexManipulator &typeTest) const
| Apply a manipulator based on the type of the functor.

## Detailed Description

An interface for easy manipulation of meshes.

Scale, set alpha value, flip surfaces, and so on. This exists for fixing problems with wrong imported or exported meshes quickly after loading. It is not intended for doing mesh modifications and/or animations during runtime.

Definition at line 25 of file IMeshManipulator.h.

## Member Function Documentation

template<typename Functor >

bool irr::scene::IMeshManipulator::apply | ( | const Functor & | func,
|  | IMesh * | mesh,
|  | bool | boundingBoxUpdate = `false` |
| ) |  |  | const`[inline]`

Apply a manipulator on the Mesh.

Parameters:

  | func | A functor defining the mesh manipulation.
  | mesh | The Mesh to apply the manipulator to.
  | boundingBoxUpdate | Specifies if the bounding box should be updated during manipulation.

Returns:
  True if the functor was successfully applied, else false.

Definition at line 257 of file IMeshManipulator.h.

template<typename Functor >

bool irr::scene::IMeshManipulator::apply | ( | const Functor & | func,
|  | IMeshBuffer * | buffer,
|  | bool | boundingBoxUpdate = `false` |
| ) |  |  | const`[inline]`

Apply a manipulator on the Meshbuffer.

Parameters:

  | func | A functor defining the mesh manipulation.
  | buffer | The Meshbuffer to apply the manipulator to.
  | boundingBoxUpdate | Specifies if the bounding box should be updated during manipulation.

Returns:
  True if the functor was successfully applied, else false.

Definition at line 245 of file IMeshManipulator.h.

Referenced by scale(), setVertexColorAlpha(), setVertexColors(), and transform().

template<typename Functor >

bool irr::scene::IMeshManipulator::apply_ | ( | const Functor & | func,
|  | IMeshBuffer * | buffer,
|  | bool | boundingBoxUpdate,
|  | const IVertexManipulator & | typeTest |
| ) |  |  | const`[inline, protected]`

Apply a manipulator based on the type of the functor.

Parameters:

  | func | A functor defining the mesh manipulation.
  | buffer | The Meshbuffer to apply the manipulator to.
  | boundingBoxUpdate | Specifies if the bounding box should be updated during manipulation.
  | typeTest | Unused parameter, which handles the proper call selection based on the type of the Functor which is passed in two times.

Returns:
  True if the functor was successfully applied, else false.

Definition at line 287 of file IMeshManipulator.h.

virtual IAnimatedMesh* irr::scene::IMeshManipulator::createAnimatedMesh | ( | IMesh * | mesh,
|  | scene::E_ANIMATED_MESH_TYPE | type = `scene::EAMT_UNKNOWN` |
| ) |  |  | const`[pure virtual]`

Create a new AnimatedMesh and adds the mesh to it.

Parameters:

  | mesh | Input mesh
  | type | The type of the animated mesh to create.

Returns:
  Newly created animated mesh with mesh as its only content. When you don't need the animated mesh anymore, you should call IAnimatedMesh::drop(). See IReferenceCounted::drop() for more information.

virtual SMesh* irr::scene::IMeshManipulator::createMeshCopy | ( | IMesh * | mesh | ) | const`[pure virtual]`

Clones a static IMesh into a modifiable SMesh.

All meshbuffers in the returned SMesh are of type SMeshBuffer or SMeshBufferLightMap.

Parameters:

  | mesh | Mesh to copy.

Returns:
  Cloned mesh. If you no longer need the cloned mesh, you should call SMesh::drop(). See IReferenceCounted::drop() for more information.

virtual IMesh* irr::scene::IMeshManipulator::createMeshUniquePrimitives | ( | IMesh * | mesh | ) | const`[pure virtual]`

Creates a copy of a mesh with all vertices unwelded.

Parameters:

  | mesh | Input mesh

Returns:
  Mesh consisting only of unique faces. All vertices which were previously shared are now duplicated. If you no longer need the cloned mesh, you should call IMesh::drop(). See IReferenceCounted::drop() for more information.

virtual IMesh* irr::scene::IMeshManipulator::createMeshWelded | ( | IMesh * | mesh,
|  | f32 | tolerance = `core::ROUNDING_ERROR_f32` |
| ) |  |  | const`[pure virtual]`

Creates a copy of a mesh with vertices welded.

Parameters:

  | mesh | Input mesh
  | tolerance | The threshold for vertex comparisons.

Returns:
  Mesh without redundant vertices. If you no longer need the cloned mesh, you should call IMesh::drop(). See IReferenceCounted::drop() for more information.

virtual IMesh* irr::scene::IMeshManipulator::createMeshWith1TCoords | ( | IMesh * | mesh | ) | const`[pure virtual]`

Creates a copy of the mesh, which will only consist of S3DVertex vertices.

Parameters:

  | mesh | Input mesh

Returns:
  Mesh consisting only of S3DVertex vertices. If you no longer need the cloned mesh, you should call IMesh::drop(). See IReferenceCounted::drop() for more information.

virtual IMesh* irr::scene::IMeshManipulator::createMeshWith2TCoords | ( | IMesh * | mesh | ) | const`[pure virtual]`

Creates a copy of the mesh, which will only consist of S3DVertex2TCoord vertices.

Parameters:

  | mesh | Input mesh

Returns:
  Mesh consisting only of S3DVertex2TCoord vertices. If you no longer need the cloned mesh, you should call IMesh::drop(). See IReferenceCounted::drop() for more information.

virtual IMesh* irr::scene::IMeshManipulator::createMeshWithTangents | ( | IMesh * | mesh,
|  | bool | recalculateNormals = `false`,
|  | bool | smooth = `false`,
|  | bool | angleWeighted = `false`,
|  | bool | recalculateTangents = `true` |
| ) |  |  | const`[pure virtual]`

Creates a copy of the mesh, which will only consist of S3DVertexTangents vertices.

This is useful if you want to draw tangent space normal mapped geometry because it calculates the tangent and binormal data which is needed there.

Parameters:

  | mesh | Input mesh
  | recalculateNormals | The normals are recalculated if set, otherwise the original ones are kept. Note that keeping the normals may introduce inaccurate tangents if the normals are very different to those calculated from the faces.
  | smooth | The normals/tangents are smoothed across the meshbuffer's faces if this flag is set.
  | angleWeighted | Improved smoothing calculation used
  | recalculateTangents | Whether are actually calculated, or just the mesh with proper type is created.

Returns:
  Mesh consisting only of S3DVertexTangents vertices. If you no longer need the cloned mesh, you should call IMesh::drop(). See IReferenceCounted::drop() for more information.

virtual void irr::scene::IMeshManipulator::flipSurfaces | ( | IMesh * | mesh | ) | const`[pure virtual]`

Flips the direction of surfaces.

Changes backfacing triangles to frontfacing triangles and vice versa.

Parameters:

  | mesh | Mesh on which the operation is performed.

virtual s32 irr::scene::IMeshManipulator::getPolyCount | ( | IAnimatedMesh * | mesh | ) | const`[pure virtual]`

Get amount of polygons in mesh.

Parameters:

  | mesh | Input mesh

Returns:
  Number of polygons in mesh.

virtual s32 irr::scene::IMeshManipulator::getPolyCount | ( | IMesh * | mesh | ) | const`[pure virtual]`

Get amount of polygons in mesh.

Parameters:

  | mesh | Input mesh

Returns:
  Number of polygons in mesh.

virtual void irr::scene::IMeshManipulator::makePlanarTextureMapping | ( | scene::IMeshBuffer * | buffer,
|  | f32 | resolutionS,
|  | f32 | resolutionT,
|  | u8 | axis,
|  | const core::vector3df & | offset |
| ) |  |  | const`[pure virtual]`

Creates a planar texture mapping on the meshbuffer.

This method is currently implemented towards the LWO planar mapping. A more general biasing might be required.

Parameters:

  | buffer | Buffer on which the operation is performed.
  | resolutionS | Resolution of the planar mapping in horizontal direction. This is the ratio between object space and texture space.
  | resolutionT | Resolution of the planar mapping in vertical direction. This is the ratio between object space and texture space.
  | axis | The axis along which the texture is projected. The allowed values are 0 (X), 1(Y), and 2(Z).
  | offset | Vector added to the vertex positions (in object coordinates).

virtual void irr::scene::IMeshManipulator::makePlanarTextureMapping | ( | scene::IMeshBuffer * | meshbuffer,
|  | f32 | resolution = `0.001f` |
| ) |  |  | const`[pure virtual]`

Creates a planar texture mapping on the meshbuffer.

Parameters:

  | meshbuffer,: | Buffer on which the operation is performed.
  | resolution,: | resolution of the planar mapping. This is the value specifying which is the relation between world space and texture coordinate space.

virtual void irr::scene::IMeshManipulator::makePlanarTextureMapping | ( | IMesh * | mesh,
|  | f32 | resolution = `0.001f` |
| ) |  |  | const`[pure virtual]`

Creates a planar texture mapping on the mesh.

Parameters:

  | mesh,: | Mesh on which the operation is performed.
  | resolution,: | resolution of the planar mapping. This is the value specifying which is the relation between world space and texture coordinate space.

virtual void irr::scene::IMeshManipulator::recalculateNormals | ( | IMeshBuffer * | buffer,
|  | bool | smooth = `false`,
|  | bool | angleWeighted = `false` |
| ) |  |  | const`[pure virtual]`

Recalculates all normals of the mesh buffer.

Parameters:

  | buffer,: | Mesh buffer on which the operation is performed.
  | smooth,: | If the normals shall be smoothed.
  | angleWeighted,: | If the normals shall be smoothed in relation to their angles. More expensive, but also higher precision.

virtual void irr::scene::IMeshManipulator::recalculateNormals | ( | IMesh * | mesh,
|  | bool | smooth = `false`,
|  | bool | angleWeighted = `false` |
| ) |  |  | const`[pure virtual]`

Recalculates all normals of the mesh.

Parameters:

  | mesh,: | Mesh on which the operation is performed.
  | smooth,: | If the normals shall be smoothed.
  | angleWeighted,: | If the normals shall be smoothed in relation to their angles. More expensive, but also higher precision.

virtual void irr::scene::IMeshManipulator::recalculateTangents | ( | IMesh * | mesh,
|  | bool | recalculateNormals = `false`,
|  | bool | smooth = `false`,
|  | bool | angleWeighted = `false` |
| ) |  |  | const`[pure virtual]`

Recalculates tangents, requires a tangent mesh.

Parameters:

  | mesh | Mesh on which the operation is performed.
  | recalculateNormals | If the normals shall be recalculated, otherwise original normals of the mesh are used unchanged.
  | smooth | If the normals shall be smoothed.
  | angleWeighted | If the normals shall be smoothed in relation to their angles. More expensive, but also higher precision.

void irr::scene::IMeshManipulator::scale | ( | IMeshBuffer * | buffer,
|  | const core::vector3df & | factor |
| ) |  |  | const`[inline]`

Scales the actual meshbuffer, not a scene node.

Parameters:

  | buffer | Meshbuffer on which the operation is performed.
  | factor | Scale factor for each axis.

Definition at line 84 of file IMeshManipulator.h.

References apply().

void irr::scene::IMeshManipulator::scale | ( | IMesh * | mesh,
|  | const core::vector3df & | factor |
| ) |  |  | const`[inline]`

Scales the actual mesh, not a scene node.

Parameters:

  | mesh | Mesh on which the operation is performed.
  | factor | Scale factor for each axis.

Definition at line 76 of file IMeshManipulator.h.

References apply().

void irr::scene::IMeshManipulator::scaleMesh | ( | IMesh * | mesh,
|  | const core::vector3df & | factor |
| ) |  |  | const`[inline]`

Scales the actual mesh, not a scene node.

Deprecated:
  Use scale() instead

Parameters:

  | mesh | Mesh on which the operation is performed.
  | factor | Scale factor for each axis.

Definition at line 93 of file IMeshManipulator.h.

void irr::scene::IMeshManipulator::scaleTCoords | ( | scene::IMeshBuffer * | buffer,
|  | const core::vector2df & | factor,
|  | u32 | level = `1` |
| ) |  |  | const`[inline]`

Scale the texture coords of a meshbuffer.

Parameters:

  | buffer | Meshbuffer on which the operation is performed.
  | factor | Vector which defines the scale for each axis.
  | level | Number of texture coord, starting from 1. Support for level 2 exists for LightMap buffers.

Definition at line 108 of file IMeshManipulator.h.

void irr::scene::IMeshManipulator::scaleTCoords | ( | scene::IMesh * | mesh,
|  | const core::vector2df & | factor,
|  | u32 | level = `1` |
| ) |  |  | const`[inline]`

Scale the texture coords of a mesh.

Parameters:

  | mesh | Mesh on which the operation is performed.
  | factor | Vector which defines the scale for each axis.
  | level | Number of texture coord, starting from 1. Support for level 2 exists for LightMap buffers.

Definition at line 99 of file IMeshManipulator.h.

void irr::scene::IMeshManipulator::setVertexColorAlpha | ( | IMesh * | mesh,
|  | s32 | alpha |
| ) |  |  | const`[inline]`

Sets the alpha vertex color value of the whole mesh to a new value.

Parameters:

  | mesh | Mesh on which the operation is performed.
  | alpha | New alpha value. Must be a value between 0 and 255.

Definition at line 38 of file IMeshManipulator.h.

References apply().

void irr::scene::IMeshManipulator::setVertexColors | ( | IMesh * | mesh,
|  | video::SColor | color |
| ) |  |  | const`[inline]`

Sets the colors of all vertices to one color.

Parameters:

  | mesh | Mesh on which the operation is performed.
  | color | New color.

Definition at line 46 of file IMeshManipulator.h.

References apply().

void irr::scene::IMeshManipulator::transform | ( | IMeshBuffer * | buffer,
|  | const core::matrix4 & | m |
| ) |  |  | const`[inline]`

Applies a transformation to a meshbuffer.

Parameters:

  | buffer | Meshbuffer on which the operation is performed.
  | m | transformation matrix.

Definition at line 124 of file IMeshManipulator.h.

References apply().

void irr::scene::IMeshManipulator::transform | ( | IMesh * | mesh,
|  | const core::matrix4 & | m |
| ) |  |  | const`[inline]`

Applies a transformation to a mesh.

Parameters:

  | mesh | Mesh on which the operation is performed.
  | m | transformation matrix.

Definition at line 116 of file IMeshManipulator.h.

References apply().

virtual void irr::scene::IMeshManipulator::transformMesh | ( | IMesh * | mesh,
|  | const core::matrix4 & | m |
| ) |  |  | const`[inline, virtual]`

Applies a transformation to a mesh.

Deprecated:
  Use transform() instead

Parameters:

  | mesh | Mesh on which the operation is performed.
  | m | transformation matrix.

Definition at line 133 of file IMeshManipulator.h.

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

- IMeshManipulator.h

| The Irrlicht Engine Documentation © 2003-2010 by Nikolaus Gebhardt. Generated on Sun Feb 14 13:07:10 2010 by Doxygen (1.6.2)