org.scilab.forge.scirenderer.implementation.g2d.motor

Class LightHelper

java.lang.Object

org.scilab.forge.scirenderer.implementation.g2d.motor.LightHelper

public class LightHelper
extends java.lang.Object

Author:

Pedro SOUZA

Constructor Summary

Constructors

Constructor and Description
LightHelper()

Method Summary

Modifier and Type	Method and Description
static java.awt.Color[]	applyAmbient(java.awt.Color ambient, java.awt.Color[] output, boolean additive) Apply the given ambient color to the output.
static java.awt.Color[]	applyAmbient(java.awt.Color ambient, java.awt.Color[] input, java.awt.Color[] output, boolean additive) Apply the given ambient color to the output.
static java.awt.Color[]	applyDiffuse(Vector3f light, boolean directional, Vector3f[] vertices, Vector3f[] normals, java.awt.Color[] colors, java.awt.Color diffuse, java.awt.Color[] output, boolean additive) Apply diffuse light to the output colors
static java.awt.Color[]	applyDiffuse(Vector3f light, boolean directional, Vector3f[] vertices, Vector3f[] normals, java.awt.Color color, java.awt.Color[] output, boolean additive) Apply diffuse light to the output colors
static java.awt.Color[]	applyLight(G2DLight light, Material mat, Vector3f camera, Vector3f[] vertices, Vector3f[] normals, java.awt.Color[] colors, java.awt.Color[] output, float[] transf, boolean additive) Apply a per-vertex lighting to the given colors
static java.awt.Color[]	applySpecular(Vector3f camera, Vector3f light, float shininess, boolean directional, Vector3f[] vertices, Vector3f[] normals, java.awt.Color specular, java.awt.Color[] output, boolean additive)
static Vector3f[]	getIndexedVector3f(java.nio.FloatBuffer buffer, java.nio.IntBuffer index, int stride, float[] transf)
static Vector3f[]	getVector3f(java.nio.FloatBuffer buffer, int stride)

Methods inherited from class java.lang.Object

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

Constructor Detail

LightHelper

public LightHelper()

Method Detail

getVector3f

public static Vector3f[] getVector3f(java.nio.FloatBuffer buffer,
                                     int stride)

Parameters:

buffer - the float buffer.

stride - the stride between elements.

Returns:

an array of Vector3f from the given float buffer.

getIndexedVector3f

public static Vector3f[] getIndexedVector3f(java.nio.FloatBuffer buffer,
                                            java.nio.IntBuffer index,
                                            int stride,
                                            float[] transf)

Parameters:

buffer - the float buffer.

index - the indices buffer.

stride - the stride between elements.

transf - matrix to transform the vector, if null no transformation is applied.

Returns:

an array of Vector3f from the given float buffer.

applyAmbient

public static java.awt.Color[] applyAmbient(java.awt.Color ambient,
                                            java.awt.Color[] output,
                                            boolean additive)

Apply the given ambient color to the output.

Parameters:

ambient - the ambient color.

output - the color vector to apply the ambient color.

additive - if true the ambient color is added to output.

Returns:

the resulting color vector.

applyAmbient

public static java.awt.Color[] applyAmbient(java.awt.Color ambient,
                                            java.awt.Color[] input,
                                            java.awt.Color[] output,
                                            boolean additive)

Apply the given ambient color to the output.

Parameters:

ambient - the ambient color.

input - the input color.

output - the color vector to apply the ambient color.

additive - if true the ambient color is added to output.

Returns:

the resulting color vector.

applyDiffuse

public static java.awt.Color[] applyDiffuse(Vector3f light,
                                            boolean directional,
                                            Vector3f[] vertices,
                                            Vector3f[] normals,
                                            java.awt.Color[] colors,
                                            java.awt.Color diffuse,
                                            java.awt.Color[] output,
                                            boolean additive)

Apply diffuse light to the output colors

Parameters:

light - the light position or direction.

directional - if true the vector light is considered a direction otherwise a position.

vertices - the surface vertices.

normals - the surface normals.

colors - the surface per-vertex colors.

dffuse - the light diffuse color.

output - the output color vector.

additive - if true the calculated diffuse color is added to the output.

Returns:

the resulting color vector.

applyDiffuse

public static java.awt.Color[] applyDiffuse(Vector3f light,
                                            boolean directional,
                                            Vector3f[] vertices,
                                            Vector3f[] normals,
                                            java.awt.Color color,
                                            java.awt.Color[] output,
                                            boolean additive)

Apply diffuse light to the output colors

Parameters:

light - the light position or direction.

directional - if true the vector light is considered a direction otherwise a position.

vertices - the surface vertices.

normals - the surface normals.

color - the surface color.

output - the output color vector.

additive - if true the calculated diffuse color is added to the output.

Returns:

the resulting color vector.

applySpecular

public static java.awt.Color[] applySpecular(Vector3f camera,
                                             Vector3f light,
                                             float shininess,
                                             boolean directional,
                                             Vector3f[] vertices,
                                             Vector3f[] normals,
                                             java.awt.Color specular,
                                             java.awt.Color[] output,
                                             boolean additive)

applyLight

public static java.awt.Color[] applyLight(G2DLight light,
                                          Material mat,
                                          Vector3f camera,
                                          Vector3f[] vertices,
                                          Vector3f[] normals,
                                          java.awt.Color[] colors,
                                          java.awt.Color[] output,
                                          float[] transf,
                                          boolean additive)

Apply a per-vertex lighting to the given colors

Parameters:

light - the light.

mat - the material properties.

camera - the camera position.

vertices - the surface vertices.

normals - the surface normals.

colors - the surface per-vertex colors.

output - the output color vector.

transf - the light transformation matrix. If null no transformation is applyed.

additive - if true the calculated color is added to the output.

Returns:

the resulting color vector.