Viewer (Artisynth API documentation)

All Superinterfaces:

Renderer

All Known Implementing Classes:

GL2Viewer, GL3Viewer, GLViewer
```
public interface Viewer
extends Renderer
```
A viewer is a component that takes a collection of renderables and renders them for a given viewpoint and set of lighting conditions. It also implements the interface Renderable, which provides the primary functionality by which renderables can render themselves.

Nested Class Summary
- Nested classes/interfaces inherited from interface maspack.render.Renderer
  Renderer.ColorInterpolation, Renderer.ColorMixing, Renderer.DrawMode, Renderer.FaceStyle, Renderer.HighlightStyle, Renderer.LineStyle, Renderer.PointStyle, Renderer.Shading

Field Summary
- Fields inherited from interface maspack.render.Renderer
  HIGHLIGHT, SORT_FACES

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`int`	`addLight(Light light)` Adds a specified light to this viewer and enables it.
`void`	`addRenderable(IsRenderable r)` Adds a renderable to this viewer.
`void`	`addRenderListener(RenderListener l)` Adds a render listener to this viewer.
`void`	`addSelectionListener(ViewerSelectionListener l)` Adds a selection listener to this viewer that will fire whenever objects are selected.
`void`	`autoFit()` Calls either `autoFitOrtho()` or `autoFitPerspective()`, depending on whether the current view is orthogonal or perspective.
`void`	`autoFitOrtho()` Auto computes the eye and center positions and an orthogonal viewing frustum to fit the current scence.
`void`	`autoFitPerspective()` Auto computes the eye and center positions and an perpective viewing frustum to fit the current scence.
`void`	`clearRenderables()` Removes all renderables from this viewer.
`AxisAlignedRotation`	`getAxialView()` Returns the current axis-aligned view.
`java.awt.Color`	`getBackgroundColor()` Returns the background color for this viewer.
`float[]`	`getBackgroundColor(float[] rgba)` Returns the background color for this viewer.
`RenderList`	`getExternalRenderList()` Returns the external render list for this viewer, or `null` if the viewer does not have an external render list.
`Point3d`	`getEye()` Returns the eye position.
`void`	`getEyeToWorld(RigidTransform3d TEW)` Gets the eye-to-world transform for this viewer.
`int`	`getIndexOfLight(Light light)` Get the index of a specified light in this viewer.
`Light`	`getLight(int idx)` Get a specified light by index in this viewer.
`RenderListener[]`	`getRenderListeners()` Returns an array of all render listeners held by this viewer.
`ViewerSelectionFilter`	`getSelectionFilter()` Returns the current selection filter for the viewer, if any.
`ViewerSelectionListener[]`	`getSelectionListeners()` Returns a list of all the selection listener in this viewer.
`Vector3d`	`getUpVector()` Returns the ``up'' vector which this viewer uses in some instances to determine the direction of the y axis of the eye coordinate system.
`double`	`getVerticalFieldOfView()` Returns the default vertical field of view in degrees.
`boolean`	`hasHighlightStyle(Renderer.HighlightStyle style)` Returns `true` if this viewer supports the indicated highlighting style.
`boolean`	`isSelectionEnabled()` Returns `true` if viewer-based selection is enabled.
`int`	`numLights()` Returns the number of lights in this viewer.
`void`	`removeLight(int idx)` Removes the light with the specified index from this viewer.
`boolean`	`removeLight(Light light)` Removes the indicated light from this viewer.
`boolean`	`removeRenderable(IsRenderable r)` Removes a renderable from this viewer.
`boolean`	`removeRenderListener(RenderListener l)` Removes a render listener from this viewer.
`boolean`	`removeSelectionListener(ViewerSelectionListener l)` Removes a selection listener from this viewer.
`void`	`repaint()` Request a repaint operation for this viewer.
`void`	`rerender()` Convenience methods that calls `rerender(int)` with `flags` = 0.
`void`	`rerender(int flags)` Performs a rerender for this viewer.
`void`	`setAxialView(AxisAlignedRotation REW)` Sets an axial (or axis-aligned) view.
`void`	`setBackgroundColor(java.awt.Color color)` Sets the background color for this viewer.
`void`	`setBackgroundColor(float[] rgba)` Sets the background color for this viewer.
`void`	`setCenter(Point3d center)` Sets the center point for the viewer, and adjusts the eye-to-world transform so that the eye's -z axis is directed at the center point.
`void`	`setExternalRenderList(RenderList list)` Sets the external render list for this viewer.
`void`	`setEye(Point3d eye)` Sets the eye coordinates to a specified location in world coordinates, and adjusts the eye-to-world transform so that the eye's -z axis is directed at the center point.
`void`	`setEyeToWorld(Point3d eye, Point3d center, Vector3d up)` Sets the eye-to-world transform for this viewer, using the canonical parameters used by the GL `lookat` method.
`void`	`setEyeToWorld(RigidTransform3d TEW)` Sets the eye-to-world transform for this viewer.
`boolean`	`setHighlightStyle(Renderer.HighlightStyle style)` Sets the highlighting style for this viewer.
`void`	`setOrthogonal(double fieldHeight, double near, double far)` Sets the viewing frustum to an orthogonal projection centered about the -z axis.
`void`	`setOrthogonal(double left, double right, double bottom, double top, double near, double far)` Sets the viewing frustum to a general orthogonal projection.
`void`	`setPerspective(double fieldOfView, double near, double far)` Sets the viewing frustum to a perspective projection centered about the -z axis.
`void`	`setPerspective(double left, double right, double bottom, double top, double near, double far)` Sets the viewing frustum to a general perspective projection.
`void`	`setSelectionEnabled(boolean enable)` Enables or disables viewer-based selection.
`void`	`setSelectionFilter(ViewerSelectionFilter filter)` Sets a selection filter for the viewer.
`void`	`setUpVector(Vector3d up)` Sets the ``up'' vector for this viewer to a specified value, and adjusts the eye-to-world transform to account for this new vertical direction, while the eye's -z axis is directed at the center point.
`void`	`setVerticalFieldOfView(double fov)` Sets the default vertical field of view in degrees.
`void`	`setViewMatrix(RigidTransform3d TWE)` Sets the view matrix for this viewer.

Methods inherited from interface maspack.render.Renderer
addVertex, addVertex, addVertex, addVertex, begin2DRendering, begin2DRendering, beginDraw, beginSelectionQuery, beginSubSelection, centerDistancePerPixel, distancePerPixel, draw, drawArrow, drawArrow, drawArrow, drawAxes, drawAxes, drawBox, drawBox, drawBox, drawCone, drawCone, drawCube, drawCube, drawCylinder, drawCylinder, drawLine, drawLine, drawLine, drawLine, drawLine, drawLine, drawLines, drawLines, drawLines, drawLines, drawLines, drawLines, drawLineStrip, drawPoint, drawPoint, drawPoint, drawPoint, drawPoints, drawPoints, drawPoints, drawPoints, drawPoints, drawPoints, drawSolidAxes, drawSolidAxes, drawSphere, drawSphere, drawSpindle, drawSpindle, drawText, drawText, drawText, drawText, drawTriangle, drawTriangle, drawTriangles, drawTriangles, drawTriangles, drawTriangles, drawVertices, drawVertices, drawVertices, end2DRendering, endDraw, endSelectionQuery, endSubSelection, getBackColor, getBumpMap, getCenter, getColorInterpolation, getColorMap, getDefaultFont, getDepthOffset, getEmission, getEyeZDirection, getFaceStyle, getFarPlaneDistance, getFrontColor, getHighlightColor, getHighlighting, getHighlightStyle, getLineWidth, getModelMatrix, getModelMatrix, getNormalMap, getPointSize, getScreenHeight, getScreenWidth, getShading, getShininess, getSpecular, getSurfaceResolution, getTextBounds, getTextureMatrix, getTextureMatrix, getVertexColorMixing, getViewMatrix, getViewMatrix, getViewPlaneDistance, getViewPlaneHeight, getViewPlaneWidth, has2DRendering, hasBumpMapping, hasColorMapMixing, hasColorMapping, hasNormalMapping, hasSelection, hasTextRendering, hasVertexColorMixing, is2DRendering, isOrthogonal, isSelectable, isSelecting, mulModelMatrix, popModelMatrix, pushModelMatrix, restoreDefaultState, rotateModelMatrix, scaleModelMatrix, setBackColor, setBumpMap, setColor, setColor, setColor, setColor, setColor, setColorInterpolation, setColorMap, setDefaultFont, setDepthOffset, setEdgeColoring, setEmission, setFaceColoring, setFaceColoring, setFaceStyle, setFrontAlpha, setFrontColor, setHighlighting, setLineColoring, setLineShading, setLineWidth, setModelMatrix, setModelMatrix2d, setNormal, setNormal, setNormal, setNormalMap, setPointColoring, setPointShading, setPointSize, setPropsColoring, setPropsShading, setShading, setShininess, setSpecular, setSurfaceResolution, setTextureCoord, setTextureCoord, setTextureCoord, setTextureMatrix, setVertexColorMixing, translateModelMatrix

- Method Detail
  - addRenderable
```
void addRenderable(IsRenderable r)
```
    Adds a renderable to this viewer.
    
    Parameters:
    
    r - renderable to add
  - removeRenderable
```
boolean removeRenderable(IsRenderable r)
```
    Removes a renderable from this viewer.
    
    Parameters:
    
    r - renderable to remove
    
    Returns:
    
    true if r was present and removed
  - clearRenderables
```
void clearRenderables()
```
    Removes all renderables from this viewer.
  - setExternalRenderList
```
void setExternalRenderList(RenderList list)
```
    Sets the external render list for this viewer. This is a list of renderables that is maintained independently of the set of renderables maintained by addRenderable(maspack.render.IsRenderable), removeRenderable(maspack.render.IsRenderable), etc.
    Generally, if an application specifies an external render list, it should rebuild that list prior to each invocation of this viewer's rerender(int) method. This is typically dones as follows:
```
    RenderList extList;
    ...
    extList.clear();
    for (every external renderable r) {
       extList.addIfVisible (r);
    }
 
```
    The call to addIfVisible() will place r onto the render list (if it is visible) and also call its prerender() method. Note in particular that prerender() will not be called by the viewer.
    External render lists are designed for situations where a set of renderables is being rendered simultaneously by multiple viewers, and consequently we don't want prerender() to be called multiple times by different viewers.
    Parameters:
    
    list - new external render list, or null to clear the external list
  - getExternalRenderList
```
RenderList getExternalRenderList()
```
    Returns the external render list for this viewer, or null if the viewer does not have an external render list.
    
    Returns:
    
    external render list
  - rerender
```
void rerender()
```
    Convenience methods that calls rerender(int) with flags = 0.
  - rerender
```
void rerender(int flags)
```
    Performs a rerender for this viewer. This does the following:
    1. Calls the prerender() method for all renderables in the viewer and collects them into an internal render list;
    2. Requests a repaint for the viewer, during which it will call the render() method for all renderables in both the internal render list and the external render list (if specified).
    The render() methods are called with this viewer as the renderer and the flags argument as the flags.
    Parameters:
    
    flags - rendering flags
  - repaint
```
void repaint()
```
    Request a repaint operation for this viewer.
  - addRenderListener
```
void addRenderListener(RenderListener l)
```
    Adds a render listener to this viewer. Render listeners are fired every time the viewer performs a repaint.
    
    Parameters:
    
    l - render listener to add.
  - removeRenderListener
```
boolean removeRenderListener(RenderListener l)
```
    Removes a render listener from this viewer.
    
    Parameters:
    
    l - render listener to remove
    
    Returns:
    
    true if l was present and removed.
  - getRenderListeners
```
RenderListener[] getRenderListeners()
```
    Returns an array of all render listeners held by this viewer.
    
    Returns:
    
    all render listeners
  - setHighlightStyle
```
boolean setHighlightStyle(Renderer.HighlightStyle style)
```
    Sets the highlighting style for this viewer. If the style is specified as Renderer.HighlightStyle.NONE, then highlighting is deactivated. Not all highlighting styles may be supported; if the specified style is not supported this method does nothing and returns false.
    
    Parameters:
    
    style - highlighting style to be set
    
    Returns:
    
    true if the highlighting style is supported.
    
    See Also:
    
    hasHighlightStyle(maspack.render.Renderer.HighlightStyle)
  - hasHighlightStyle
```
boolean hasHighlightStyle(Renderer.HighlightStyle style)
```
    Returns true if this viewer supports the indicated highlighting style.
    
    Returns:
    
    true if style is supported
  - setSelectionEnabled
```
void setSelectionEnabled(boolean enable)
```
    Enables or disables viewer-based selection. If this viewer does not support selection (i.e., if Renderer.hasSelection() returns false, then this method does nothing.
    
    Parameters:
    
    enable - if true, enables selection
  - isSelectionEnabled
```
boolean isSelectionEnabled()
```
    Returns true if viewer-based selection is enabled.
    
    Returns:
    
    false if selection is disabled or not supported.
  - setSelectionFilter
```
void setSelectionFilter(ViewerSelectionFilter filter)
```
    Sets a selection filter for the viewer. This restricts which objects are actually rendered when a selection render is performed, and therefore restricts which objects can actually be selected. This allows selection of objects that might otherwise be occluded within a scene.
    
    Parameters:
    
    filter - Selection filter to be applied
  - getSelectionFilter
```
ViewerSelectionFilter getSelectionFilter()
```
    Returns the current selection filter for the viewer, if any.
    
    Returns:
    
    current selection filter, or null if there is none.
  - addLight
```
int addLight(Light light)
```
    Adds a specified light to this viewer and enables it. In some cases, the added light may exceed the number of lights supported by the renderer. In that case, the light will still be added but will not be enabled.
    Changes to the lighting caused by adding or removing lights, or by changing the properties of existing lights, will take effect at the beginning of the next repaint step.
    
    Parameters:
    
    light - light to add to the viewer
    
    Returns:
    
    index of the added light
  - numLights
```
int numLights()
```
    Returns the number of lights in this viewer. This number will include both predefined lights as well as those specifically defined by the application.
  - getLight
```
Light getLight(int idx)
```
    Get a specified light by index in this viewer. Lights will include both predefined lights as well as those specifically defined by the application.
    
    Parameters:
    
    idx - index of the light
  - getIndexOfLight
```
int getIndexOfLight(Light light)
```
    Get the index of a specified light in this viewer.
    
    Parameters:
    
    light - light for which an index is sought
    
    Returns:
    
    Index of the light, or -1 if the viewer does not contain the light.
  - removeLight
```
boolean removeLight(Light light)
```
    Removes the indicated light from this viewer.
    Changes to the lighting caused by adding or removing lights, or by changing the properties of existing lights, will take effect at the beginning of the next repaint step.
    
    Parameters:
    
    light - light to be removed
    
    Returns:
    
    true if the viewer contained the light and it was removed
  - removeLight
```
void removeLight(int idx)
```
    Removes the light with the specified index from this viewer.
    Changes to the lighting caused by adding or removing lights, or by changing the properties of existing lights, will take effect at the beginning of the next repaint step.
    
    Parameters:
    
    idx - index of the light to be removed
    
    Throws:
    
    java.lang.IndexOutOfBoundsException - if the specified index was not in the range 0 to numLights()-1.
  - getBackgroundColor
```
java.awt.Color getBackgroundColor()
```
    Returns the background color for this viewer.
    
    Returns:
    
    background color
  - getBackgroundColor
```
float[] getBackgroundColor(float[] rgba)
```
    Returns the background color for this viewer. The color is returned as a float array describing the color's RGBA values in the range [0,1]. The returned array can be provided through the argument rgba. Otherwise, if this argument is null, an array is allocated internally.
    
    Parameters:
    
    rgba - optional array for returning the values
    
    Returns:
    
    rgba array describing the background color
  - setBackgroundColor
```
void setBackgroundColor(java.awt.Color color)
```
    Sets the background color for this viewer.
    
    Parameters:
    
    color - new background color
  - setBackgroundColor
```
void setBackgroundColor(float[] rgba)
```
    Sets the background color for this viewer.
    
    Parameters:
    
    rgba - RGB (if length 3) or RGBA values (if length 4) for the background color
  - setEyeToWorld
```
void setEyeToWorld(Point3d eye,
                   Point3d center,
                   Vector3d up)
```
    Sets the eye-to-world transform for this viewer, using the canonical parameters used by the GL lookat method. The eye-to-world transform is the inverse of the view matrix.
    
    Parameters:
    
    eye - position of the eye, in world coordinates
    
    center - point that the eye is looking at, in world coordinates
    
    up - up direction, in world coordinates
  - setEyeToWorld
```
void setEyeToWorld(RigidTransform3d TEW)
```
    Sets the eye-to-world transform for this viewer. This is the inverse of the view matrix.
    
    Parameters:
    
    TEW - new eye-to-world transform
  - getEyeToWorld
```
void getEyeToWorld(RigidTransform3d TEW)
```
    Gets the eye-to-world transform for this viewer. This is the inverse of the view matrix.
    
    Parameters:
    
    TEW - returns the eye-to-world transform
  - setAxialView
```
void setAxialView(AxisAlignedRotation REW)
```
    Sets an axial (or axis-aligned) view. This is done by setting the rotational part of the eye-to-world transform to the axis-aligned rotation REW, and then moving the eye position so that the center position lies along the new -z axis of the eye frame, while maintaining the current distance between the eye and the center.
    The method also sets this viewer's `up'' vector to the y axis of REW, and saves REW itself as the current axis-aligned view, which can be retrieved using getAxialView().
    
    Parameters:
    
    REW - axis-aligned rotational component for the eye-to-world transform
    
    See Also:
    
    getAxialView(), setUpVector(maspack.matrix.Vector3d), getUpVector()
  - getAxialView
```
AxisAlignedRotation getAxialView()
```
    Returns the current axis-aligned view. This is either the one with which the viewer was initialized, or that most recently set by setAxialView(maspack.matrix.AxisAlignedRotation).
    
    Returns:
    
    current axis-aligned view.
    
    See Also:
    
    setAxialView(maspack.matrix.AxisAlignedRotation)
  - setViewMatrix
```
void setViewMatrix(RigidTransform3d TWE)
```
    Sets the view matrix for this viewer. This is the transform from world to eye coordinates.
    
    Parameters:
    
    TWE - transform from world to eye coordinates.
  - getEye
```
Point3d getEye()
```
    Returns the eye position. This corresponds to the translational component of the eye-to-world transform.
    
    Returns:
    
    eye position, in world coordinates
  - setCenter
```
void setCenter(Point3d center)
```
    Sets the center point for the viewer, and adjusts the eye-to-world transform so that the eye's -z axis is directed at the center point. The vertical direction is specified by the current up vector. This is equivalent to
```
 setEyeToWorld (getEye(), center, getUpVector());
 
```
    Parameters:
    
    center - new center location, in world coordinates
    
    See Also:
    
    getUpVector()
  - setEye
```
void setEye(Point3d eye)
```
    Sets the eye coordinates to a specified location in world coordinates, and adjusts the eye-to-world transform so that the eye's -z axis is directed at the center point. The vertical direction is specified by the current up vector. This is equivalent to
```
 setEyeToWorld (eye, getCenter(), getUpVector());
 
```
    Parameters:
    
    eye - new eye location, in world coordinates
    
    See Also:
    
    Renderer.getCenter(), getUpVector()
  - setUpVector
```
void setUpVector(Vector3d up)
```
    Sets the ``up'' vector for this viewer to a specified value, and adjusts the eye-to-world transform to account for this new vertical direction, while the eye's -z axis is directed at the center point. This is equivalent to
```
 setEyeToWorld (getEye(), getCenter(), up);
 
```
    Parameters:
    
    up - new up vector, in world coordinates
    
    See Also:
    
    getEye(), Renderer.getCenter()
  - getUpVector
```
Vector3d getUpVector()
```
    Returns the ``up'' vector which this viewer uses in some instances to determine the direction of the y axis of the eye coordinate system.
    
    Returns:
    
    up vector, in world coordinates
    
    See Also:
    
    setUpVector(maspack.matrix.Vector3d), setCenter(maspack.matrix.Point3d), setEye(maspack.matrix.Point3d)
  - setPerspective
```
void setPerspective(double left,
                    double right,
                    double bottom,
                    double top,
                    double near,
                    double far)
```
    Sets the viewing frustum to a general perspective projection. This is done by specifying the edges locations of the view plane (i.e., the near clipping plane) with respect to the x-y plane of the eye coordinates, while also specifying the distances of the view plane and far clipping plane along the -z axis.
    
    Parameters:
    
    left - left edge position of the view plane
    
    right - right edge position of the view plane
    
    bottom - bottom edge position of the near clipping plane
    
    top - top position of the near clipping plane
    
    near - near clipping plane position (along the -z axis; must be a positive number)
    
    far - far clipping plane position (along the -z axis; must be a positive number)
  - setPerspective
```
void setPerspective(double fieldOfView,
                    double near,
                    double far)
```
    Sets the viewing frustum to a perspective projection centered about the -z axis. This is done by specifying the vertical field of view, along with the distances of the view plane and far clipping plane along the -z axis. The field of view setting is also used to update the value returned by getVerticalFieldOfView.
    
    Parameters:
    
    fieldOfView - vertial field of view (in degrees)
    
    near - near clipping plane position (along the -z axis; must be a positive number)
    
    far - far clipping plane position (along the -z axis; must be a positive number)
  - setOrthogonal
```
void setOrthogonal(double left,
                   double right,
                   double bottom,
                   double top,
                   double near,
                   double far)
```
    Sets the viewing frustum to a general orthogonal projection. This is done by specifying the edges locations of the view plane (i.e., the near clipping plane) with respect to the x-y plane of the eye coordinates, while also specifying the distances of the view plane and far clipping plane along the -z axis.
    
    Parameters:
    
    left - left edge position of the near clipping plane
    
    right - right edge position of the near clipping plane
    
    bottom - bottom edge position of the near clipping plane
    
    top - top position of the near clipping plane
    
    near - near clipping plane position (along the -z axis; must be a positive number)
    
    far - far clipping plane position (along the -z axis; must be a positive number)
  - setOrthogonal
```
void setOrthogonal(double fieldHeight,
                   double near,
                   double far)
```
    Sets the viewing frustum to an orthogonal projection centered about the -z axis. This is done by specifying the vertical height of the field of view, along with the distances of the view plane and far clipping plane along the -z axis.
    
    Parameters:
    
    fieldHeight - vertical height of the field of view
    
    near - near clipping plane position (along the -z axis; must be a positive number)
    
    far - far clipping plane position (along the -z axis; must be a positive number)
  - autoFit
```
void autoFit()
```
    Calls either autoFitOrtho() or autoFitPerspective(), depending on whether the current view is orthogonal or perspective.
  - autoFitOrtho
```
void autoFitOrtho()
```
    Auto computes the eye and center positions and an orthogonal viewing frustum to fit the current scence. This makes use of the IsRenderable.updateBounds(maspack.matrix.Vector3d, maspack.matrix.Vector3d) method of all the renderables to estimate the scene center and an approximate radius r. It then computes a distance d from the center to the eye using r = d tan(fov/2), where fov is the field of view returned by getVerticalFieldOfView() and converted to radians. The eye frame orientation is adjusted so that its $y$ axis is parallel to the current value of the ``up'' vector.
    
    See Also:
    
    setUpVector(maspack.matrix.Vector3d), getUpVector()
  - autoFitPerspective
```
void autoFitPerspective()
```
    Auto computes the eye and center positions and an perpective viewing frustum to fit the current scence. This makes use of the IsRenderable.updateBounds(maspack.matrix.Vector3d, maspack.matrix.Vector3d) method of all the renderables to estimate the scene center and an approximate radius r. It then computes a distance d from the center to the eye using r = d tan(fov/2), where fov is the field of view returned by getVerticalFieldOfView() and converted to radians. This field of view also used to used to compute the perspective frustum. The eye frame orientation is adjusted so that its $y$ axis is parallel to the current value of the ``up'' vector.
    
    See Also:
    
    setUpVector(maspack.matrix.Vector3d), getUpVector()
  - getVerticalFieldOfView
```
double getVerticalFieldOfView()
```
    Returns the default vertical field of view in degrees. This is used by autoFitOrtho() and autoFitPerspective().
    
    Returns:
    
    default vertical field of view (degrees).
  - setVerticalFieldOfView
```
void setVerticalFieldOfView(double fov)
```
    Sets the default vertical field of view in degrees. This is used by autoFitOrtho() and autoFitPerspective().
    
    Parameters:
    
    fov - new default vertical field of view (degrees).
  - addSelectionListener
```
void addSelectionListener(ViewerSelectionListener l)
```
    Adds a selection listener to this viewer that will fire whenever objects are selected.
    
    Parameters:
    
    l - selection listener to add
    
    See Also:
    
    removeSelectionListener(maspack.render.ViewerSelectionListener)
  - removeSelectionListener
```
boolean removeSelectionListener(ViewerSelectionListener l)
```
    Removes a selection listener from this viewer.
    
    Parameters:
    
    l - selection listener to remove
    
    See Also:
    
    addSelectionListener(maspack.render.ViewerSelectionListener)
  - getSelectionListeners
```
ViewerSelectionListener[] getSelectionListeners()
```
    Returns a list of all the selection listener in this viewer.
    
    Returns:
    
    selection listeners in this viewer
    
    See Also:
    
    addSelectionListener(maspack.render.ViewerSelectionListener), removeSelectionListener(maspack.render.ViewerSelectionListener)

Interface Viewer

Nested Class Summary

Nested classes/interfaces inherited from interface maspack.render.Renderer

Field Summary

Fields inherited from interface maspack.render.Renderer

Method Summary

Methods inherited from interface maspack.render.Renderer

Method Detail

addRenderable

removeRenderable

clearRenderables

setExternalRenderList

getExternalRenderList

rerender

rerender

repaint

addRenderListener

removeRenderListener

getRenderListeners

setHighlightStyle

hasHighlightStyle

setSelectionEnabled

isSelectionEnabled

setSelectionFilter

getSelectionFilter

addLight

numLights

getLight

getIndexOfLight

removeLight

removeLight

getBackgroundColor

getBackgroundColor

setBackgroundColor

setBackgroundColor

setEyeToWorld

setEyeToWorld

getEyeToWorld

setAxialView

getAxialView

setViewMatrix

getEye

setCenter

setEye

setUpVector

getUpVector

setPerspective

setPerspective

setOrthogonal

setOrthogonal

autoFit

autoFitOrtho

autoFitPerspective

getVerticalFieldOfView

setVerticalFieldOfView

addSelectionListener

removeSelectionListener

getSelectionListeners