hmi.graphics.opengl.renderobjects
Class SimpleLight

java.lang.Object
  hmi.graphics.opengl.scenegraph.VGLNode
      hmi.graphics.opengl.renderobjects.SimpleLight

All Implemented Interfaces:

GLRenderObject

public class SimpleLight
extends VGLNode

A basic positional or directional light object. The assumption is that color attributes, and position or direction are set during initialization, and that the light is permanently bound to one of the fixed OpenGL lights. The position is passed to OpenGL for every render call, so that it will take the ModelView transform into account.

Author:

Job Zwiers

Field Summary

private SimpleLightGeometry	glGeometry
private SimpleLightState	glState
private float[][]	points
private float[]	position
private float[]	shadowMatrix
private static float	SHADOWPLANE_HEIGHT
private static float	SHADOWPLANE_X0
private static float	SHADOWPLANE_X1
private static float	SHADOWPLANE_X2
private static float	SHADOWPLANE_Z0
private static float	SHADOWPLANE_Z1
private static float	SHADOWPLANE_Z2
private float[]	translation
private static int	VEC3SIZE
private static int	VEC4SIZE
private VJoint	vjoint

Constructor Summary

SimpleLight(int gl_light, String name)
common initialization for new DirectionalLights.

Method Summary

SimpleLightGeometry	getGeometry()
float[]	getPosition() Returns a reference to the position float array of this light
SimpleLightState	getState()
void	glInit(GLRenderContext glc) called during initialization phase of the renderer.
void	glRender(GLRenderContext glc) Rendering a light means: set position, taking into account the current ModelView transformation.
void	setDirection(float x, float y, float z) Turns the light into a direction light, and sets the direction from which the light is shining.
void	setPosition(float[] pos) Turns the light into a positional light, and sets the position from which the light is shining.
void	setPosition(float x, float y, float z) Turns the light into a positional light, and sets the position from which the light is shining.
void	setShadowMatrix(float[] matrix)
void	setShadowPlane(float x0, float y0, float z0, float x1, float y1, float z1, float x2, float y2, float z2)

Methods inherited from class hmi.graphics.opengl.scenegraph.VGLNode

addChild, addGLShape, addMarker, addMarker, getGLShapeList, getRoot, prependGLShape, toString

Methods inherited from class java.lang.Object

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

Field Detail

VEC3SIZE

private static final int VEC3SIZE

See Also:

Constant Field Values

VEC4SIZE

private static final int VEC4SIZE

See Also:

Constant Field Values

SHADOWPLANE_HEIGHT

private static final float SHADOWPLANE_HEIGHT

See Also:

Constant Field Values

SHADOWPLANE_X0

private static final float SHADOWPLANE_X0

See Also:

Constant Field Values

SHADOWPLANE_Z0

private static final float SHADOWPLANE_Z0

See Also:

Constant Field Values

SHADOWPLANE_X1

private static final float SHADOWPLANE_X1

See Also:

Constant Field Values

SHADOWPLANE_Z1

private static final float SHADOWPLANE_Z1

See Also:

Constant Field Values

SHADOWPLANE_X2

private static final float SHADOWPLANE_X2

See Also:

Constant Field Values

SHADOWPLANE_Z2

private static final float SHADOWPLANE_Z2

See Also:

Constant Field Values

glGeometry

private SimpleLightGeometry glGeometry

glState

private SimpleLightState glState

vjoint

private VJoint vjoint

translation

private float[] translation

position

private float[] position

shadowMatrix

private float[] shadowMatrix

points

private float[][] points

Constructor Detail

SimpleLight

public SimpleLight(int gl_light,
                   String name)

common initialization for new DirectionalLights.

Method Detail

getState

public SimpleLightState getState()

getGeometry

public SimpleLightGeometry getGeometry()

setPosition

public void setPosition(float x,
                        float y,
                        float z)

Turns the light into a positional light, and sets the position from which the light is shining. Should be called before initialization.

setPosition

public void setPosition(float[] pos)

Turns the light into a positional light, and sets the position from which the light is shining. Should be called before initialization.

getPosition

public float[] getPosition()

Returns a reference to the position float array of this light

setDirection

public void setDirection(float x,
                         float y,
                         float z)

Turns the light into a direction light, and sets the direction from which the light is shining. Should be called before initialization.

setShadowMatrix

public void setShadowMatrix(float[] matrix)

glInit

public void glInit(GLRenderContext glc)

called during initialization phase of the renderer. It binds the attributes, like color, to some OpenGL light.

Specified by:

glInit in interface GLRenderObject

Overrides:

glInit in class VGLNode

glRender

public void glRender(GLRenderContext glc)

Rendering a light means: set position, taking into account the current ModelView transformation. Optionally, a small sphere is rendered, to indicate the position of the light.

Specified by:

glRender in interface GLRenderObject

Overrides:

glRender in class VGLNode

setShadowPlane

public void setShadowPlane(float x0,
                           float y0,
                           float z0,
                           float x1,
                           float y1,
                           float z1,
                           float x2,
                           float y2,
                           float z2)