idx3d
Class idx3d_Triangle

java.lang.Object
  idx3d.idx3d_Triangle

public class idx3d_Triangle
extends java.lang.Object

Defines a 3d triangle.

Version:

3.3 2006-02-22 Werner Randelshofer: Avoid unnecessary object creation.
3.2 2003-12-18 Werner Randelshofer: Methods setMaterial and getMaterial added. These methods allows for individual materials per triangle. Dependency note: This change also requires changes in class idx3d_RenderPipeline. Moved responsibility for texture location from class idx3d_Vertex to this class. Dependency note: This change also requires changes in idx3d_Vertex, idx3d_Rasterizer.

Field Summary

int	id
idx3d_Vector	n Normal vector of flat triangle.
idx3d_Vector	n2 Projected Normal vector.
boolean	outOfFrustrum visibility tag for frustrum clipping.
idx3d_Vertex	p1 First vertex.
idx3d_Vertex	p2 Second vertex.
idx3d_Vertex	p3 Third vertex.
idx3d_Object	parent The object which contains this triangle.
int[]	tx Texture x-coordinates (absolute).
int[]	ty Texture y-coordinates (absolute).
float[]	u Texture x-coordinates (relative).
float[]	v Texture y-coordinates (relative).
boolean	visible Visibility tag for clipping.

Constructor Summary

idx3d_Triangle(idx3d_Vertex a, idx3d_Vertex b, idx3d_Vertex c)

Method Summary

void	clipFrustrum(int w, int h) Backface culling and frustrum clipping.
boolean	degenerated()
idx3d_Vector	getCenter()
idx3d_Triangle	getClone()
float	getDist()
idx3d_InternalMaterial	getMaterial() Returns the material which shall be used to render this triangle.
idx3d_Vertex	getMedium()
idx3d_InternalMaterial	getTriangleMaterial() Returns the local material setting.
idx3d_Vector	getWeightedNormal()
idx3d_Vector	getWeightedNormalInto(idx3d_Vector resultVector)
void	project(idx3d_Matrix normalProjection)
void	regenerateNormal()
void	scaleTextureCoordinates(float fx, float fy)
void	setTriangleMaterial(idx3d_InternalMaterial material) Sets an individual material for this triangle.
void	setUV(float u1, float v1, float u2, float v2, float u3, float v3)
void	setUV(int vertex, float u, float v)

Methods inherited from class java.lang.Object

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

Field Detail

parent

public idx3d_Object parent

The object which contains this triangle.

visible

public boolean visible

Visibility tag for clipping.

outOfFrustrum

public boolean outOfFrustrum

visibility tag for frustrum clipping.

p1

public idx3d_Vertex p1

First vertex.

p2

public idx3d_Vertex p2

Second vertex.

p3

public idx3d_Vertex p3

Third vertex.

n

public idx3d_Vector n

Normal vector of flat triangle.

n2

public idx3d_Vector n2

Projected Normal vector.

id

public int id

u

public float[] u

Texture x-coordinates (relative).

v

public float[] v

Texture y-coordinates (relative).

tx

public int[] tx

Texture x-coordinates (absolute).

ty

public int[] ty

Texture y-coordinates (absolute).

Constructor Detail

idx3d_Triangle

public idx3d_Triangle(idx3d_Vertex a,
                      idx3d_Vertex b,
                      idx3d_Vertex c)

Method Detail

setTriangleMaterial

public void setTriangleMaterial(idx3d_InternalMaterial material)

Sets an individual material for this triangle. This allows for multi-material idx3d_Objects at the triangle level. Set this to null, to use the material specified by the parent idx3d_Object.

Parameters:

material - A material or null.

getTriangleMaterial

public idx3d_InternalMaterial getTriangleMaterial()

Returns the local material setting.

Returns:

Returns the material used to render this triangle.

getMaterial

public idx3d_InternalMaterial getMaterial()

Returns the material which shall be used to render this triangle. If this triangle does not have an individual material, the material of the parent idx3d_Object is returned.

Returns:

Returns the material used to render this triangle.

clipFrustrum

public void clipFrustrum(int w,
                         int h)

Backface culling and frustrum clipping.

project

public void project(idx3d_Matrix normalProjection)

setUV

public void setUV(float u1,
                  float v1,
                  float u2,
                  float v2,
                  float u3,
                  float v3)

setUV

public void setUV(int vertex,
                  float u,
                  float v)

scaleTextureCoordinates

public void scaleTextureCoordinates(float fx,
                                    float fy)

regenerateNormal

public void regenerateNormal()

getWeightedNormal

public idx3d_Vector getWeightedNormal()

getWeightedNormalInto

public idx3d_Vector getWeightedNormalInto(idx3d_Vector resultVector)

getMedium

public idx3d_Vertex getMedium()

getCenter

public idx3d_Vector getCenter()

getDist

public float getDist()

degenerated

public boolean degenerated()

getClone

public idx3d_Triangle getClone()