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 Details

    • verifyUniquePoints

      protected boolean verifyUniquePoints

  • Constructor Details

    • VBOBufferLoader

      public VBOBufferLoader()

  • Method Details

    • 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 -> invalid input: '<'normal1, normal2, ... normalN>.
      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)