Package org.jzy3d.plot3d.primitives.vbo.drawable.loaders

Class VBOBufferLoader

java.lang.Object

org.jzy3d.plot3d.primitives.vbo.drawable.loaders.VBOBufferLoader

Direct Known Subclasses:

VBOBufferLoaderForArrays, VBOBufferLoaderForPolygons, VBOBufferLoaderForPolygonsPrimitiveRestart

public class VBOBufferLoader
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	verifyUniquePoints

Constructor Summary

Constructors

Constructor	Description
VBOBufferLoader()

Method Summary

Modifier and Type	Method	Description
protected FloatBuffer	computeAverageNormalsForEachVertex(List<Coord3d> verticeList, com.google.common.collect.ArrayListMultimap<Coord3d,Coord3d> vertexNormals)	Process the average normal of a points, based on parameter vertexNormals point is mapped to a list of all normals of all polygons that have this point in common.
FloatBuffer	computeSharedNormals(int[][] elementIndices, List<Coord3d> verticeList)
FloatBuffer	computeSharedNormals(int[] geometries, int geometrySize, List<Coord3d> verticeList)	When vertices are shared between multiple triangles, each vertex normal should be unique and computed out of all triangles that share the vertex.
FloatBuffer	computeSimpleNormals(int pointsPerGeometry, List<Coord3d> verticeList)
boolean	isVerifyUniquePoints()
FloatBuffer	loadColorBufferFromArray(float[] coloring)
FloatBuffer	loadColorBufferFromColormap(List<Coord3d> verticeList, BoundingBox3d bounds, int colorChannels, IColorMap colormap)
FloatBuffer	loadNormalsFromArray(float[] points)
FloatBuffer	loadVerticesFromArray(float[] points, int pointDimensions, List<Coord3d> verticeList, BoundingBox3d bounds)
void	setVerifyUniquePoints(boolean verifyUniquePoints)
protected void	verifyDoublons(List<Coord3d> verticeList)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

verifyUniquePoints

protected boolean verifyUniquePoints

Constructor Detail

VBOBufferLoader

public VBOBufferLoader()

Method Detail

loadVerticesFromArray

public FloatBuffer loadVerticesFromArray(float[] points,
                                         int pointDimensions,
                                         List<Coord3d> verticeList,
                                         BoundingBox3d bounds)

loadColorBufferFromArray

public FloatBuffer loadColorBufferFromArray(float[] coloring)

loadColorBufferFromColormap

public FloatBuffer loadColorBufferFromColormap(List<Coord3d> verticeList,
                                               BoundingBox3d bounds,
                                               int colorChannels,
                                               IColorMap colormap)

loadNormalsFromArray

public FloatBuffer loadNormalsFromArray(float[] points)

computeSimpleNormals

public FloatBuffer computeSimpleNormals(int pointsPerGeometry,
                                        List<Coord3d> verticeList)

Parameters:

pointsPerGeometry - 3 for a triangle, N for a triangle fan, 4 for a pseudo quad (a 2 triangle fans)

verticeList -

Returns:

computeSharedNormals

public FloatBuffer computeSharedNormals(int[] geometries,
                                        int geometrySize,
                                        List<Coord3d> verticeList)

When vertices are shared between multiple triangles, each vertex normal should be unique and computed out of all triangles that share the vertex. Indeed, the normal being computed out of the cross product of the three points of a face, a vertex belonging to N faces will have N normals. Getting a single normal for a shared vertex is made by computing the mean of all the normals that may computed for this vertex, which has the great advantage of smoothing the light reflection on the border (in other word this avoid the impression of a sharp border). In case a sharp border effect is desired for this object, then one should not share vertices between faces. To do so, do NOT provide any geometry array as DrawableVBO2 constructor.

Parameters:

geometries -

geometrySize -

verticeList -

Returns:

computeSharedNormals

public FloatBuffer computeSharedNormals(int[][] elementIndices,
                                        List<Coord3d> verticeList)

Parameters:

elementIndices -

verticeList -

Returns:

computeAverageNormalsForEachVertex

protected FloatBuffer computeAverageNormalsForEachVertex(List<Coord3d> verticeList,
                                                         com.google.common.collect.ArrayListMultimap<Coord3d,Coord3d> vertexNormals)

Process the average normal of a points, based on parameter vertexNormals point is mapped to a list of all normals of all polygons that have this point in common.

Parameters:

verticeList - provides all vertices in the order they are sent to the GPU via the VBO. List is easier to process than the original vertex FloatBuffer

vertexNormals - associate coordinate -> .

Returns:

a buffer of average normals of the same size of the vertex buffer that was built at the same time than verticeList

verifyDoublons

protected void verifyDoublons(List<Coord3d> verticeList)

isVerifyUniquePoints

public boolean isVerifyUniquePoints()

setVerifyUniquePoints

public void setVerifyUniquePoints(boolean verifyUniquePoints)