Class GLModel

java.lang.Object
  |
  +--GLModel

public class GLModel

extends java.lang.Object

Store and render a textured mesh. Can load 3DS and OBJ formats.

NOTE: OBJ doesn't load texture coords. Need to debug.

Uses the IDX3D library to load and hold 3DS meshes. See http://www.idx3d.ch for the complete pure-java 3D library by Peter Walser.

napier at potatoland dot org

Field Summary

static int	SIZE_BYTE
static int	SIZE_DOUBLE
static int	SIZE_FLOAT
static int	SIZE_INT
static float	tileFactorHoriz
static float	tileFactorVert

Constructor Summary

GLModel()

GLModel(java.lang.String filename)

Method Summary

void	calculateNormals()
void	commitChanges()
static java.io.InputStream	getInputStream(java.lang.String filename) Open a file InputStream and trap errors.
void	loadMesh(java.lang.String filename)
void	makeDisplayList() Compile the mesh into display list
void	render() Draw this mesh with current texture
static void	renderCube() Render a unit cube, using current color, texture and material.
static void	renderMesh(idx3d_Object o) Basic mesh render function, using current color, material and texture.
static void	renderMesh(idx3d_Object o, int textureHandle) Render a mesh with the given texture.
static void	renderMeshOBJ(idx3d_Object o, int textureHandle) Render OBJ mesh (may have multiple texture coords per vert!!??!!)
static void	renderSphere() Render a unit sphere at the origin, using current color, texture and material.
void	rotate(float dx, float dy, float dz)
void	scale(float dx, float dy, float dz) Functions to alter mesh size, position, orientation.
void	setTexture(int textureHandle) Set texture for mesh.
void	setTextureTile(float horizontalTile, float verticalTile) How many times to repeat texture horizontally and vertically.
void	sortTriangles()
static idx3d_Triangle[]	sortTriangles(idx3d_Triangle[] tri, int L, int R) Sort an array of triangles by Z depth.
void	translate(float dx, float dy, float dz)

Methods inherited from class java.lang.Object

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

Field Detail

SIZE_DOUBLE

public static final int SIZE_DOUBLE

See Also:

Constant Field Values

SIZE_FLOAT

public static final int SIZE_FLOAT

See Also:

Constant Field Values

SIZE_INT

public static final int SIZE_INT

See Also:

Constant Field Values

SIZE_BYTE

public static final int SIZE_BYTE

See Also:

Constant Field Values

tileFactorVert

public static float tileFactorVert

tileFactorHoriz

public static float tileFactorHoriz

Constructor Detail

GLModel

public GLModel()

GLModel

public GLModel(java.lang.String filename)

Method Detail

loadMesh

public void loadMesh(java.lang.String filename)

scale

public void scale(float dx,
                  float dy,
                  float dz)

Functions to alter mesh size, position, orientation. Not to be confused with glRotate() glScale() glTranslate(). These functions operate on the mesh data, not the coordinate system. They can be used to modify a mesh permanently (see commitChanges()) so that the changes will be "baked in" to the mesh.

translate

public void translate(float dx,
                      float dy,
                      float dz)

rotate

public void rotate(float dx,
                   float dy,
                   float dz)

commitChanges

public void commitChanges()

setTextureTile

public void setTextureTile(float horizontalTile,
                           float verticalTile)

How many times to repeat texture horizontally and vertically.

setTexture

public void setTexture(int textureHandle)

Set texture for mesh.

render

public void render()

Draw this mesh with current texture

makeDisplayList

public void makeDisplayList()

Compile the mesh into display list

calculateNormals

public void calculateNormals()

sortTriangles

public void sortTriangles()

renderMesh

public static void renderMesh(idx3d_Object o,
                              int textureHandle)

Render a mesh with the given texture.
Must include these lines in init() for textures to appear:
GL11.glEnable(GL11.GL_TEXTURE_2D);
GL11.glTexEnvi(GL11.GL_TEXTURE_ENV, GL11.GL_TEXTURE_ENV_MODE, GL11.GL_REPLACE);

Parameters:

o -

textureHandle -

renderMesh

public static void renderMesh(idx3d_Object o)

Basic mesh render function, using current color, material and texture.

Parameters:

o -

renderMeshOBJ

public static void renderMeshOBJ(idx3d_Object o,
                                 int textureHandle)

Render OBJ mesh (may have multiple texture coords per vert!!??!!)

Parameters:

o -

sortTriangles

public static idx3d_Triangle[] sortTriangles(idx3d_Triangle[] tri,
                                             int L,
                                             int R)

Sort an array of triangles by Z depth. Before sorting, some routine has to set triangle.dist (average Z depth of triangle) for all triangles. Triangle Z depth will change as viewpoint/mesh move.

To use: sortTriangles(triangleArray, 0, triangleArray.length-1);

renderCube

public static void renderCube()

Render a unit cube, using current color, texture and material.

renderSphere

public static void renderSphere()

Render a unit sphere at the origin, using current color, texture and material.

getInputStream

public static java.io.InputStream getInputStream(java.lang.String filename)

Open a file InputStream and trap errors.

Returns: