vgp.discrete.lantern

## Class PgLantern

- java.lang.Object
- - jv.object.PsObject
  - - jv.project.PgGeometry
    - - jv.geom.PgPointSet
      - - jv.geom.PgElementSet
        - - vgp.discrete.lantern.PgLantern

- All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, PsUpdateIf, PgGeometryIf

      public class PgLantern
      extends PgElementSet

  Discrete cylinder is the Lantern of Schwarz.
  See Also:
    Serialized Form

- - ### Field Summary

    - ### Fields inherited from class jv.object.PsObject

      `HAS_BOUNDARY_PANEL, HAS_CONFIG_PANEL, HAS_INFO_PANEL, HAS_LABEL_PANEL, HAS_MATERIAL_PANEL, HAS_TEXTURE_PANEL, HAS_VECTOR_PANEL, INSPECTOR_INFO, INSPECTOR_INFO_EXT, IS_DELETED, IS_FIXED, IS_FOCUSSED, IS_PICKED, IS_SELECTED, IS_USED, NUM_TAGS`

    - ### Fields inherited from interface jv.project.PgGeometryIf

      `AMBIENT_H2_HYPERBOLIC, AMBIENT_H3_HYPERBOLIC, AMBIENT_H4_HYPERBOLIC, AMBIENT_PROJECTIONS, AMBIENT_R1_EUCLIDEAN, AMBIENT_R2_EUCLIDEAN, AMBIENT_R3_EUCLIDEAN, AMBIENT_R4_EUCLIDEAN, AMBIENT_R5_EUCLIDEAN, AMBIENT_S1_SPHERE, AMBIENT_S2_SPHERE, AMBIENT_S3_SPHERE, AMBIENT_S4_SPHERE, AMBIENT_SPACES, BLEND_ALPHA, BLEND_MATERIAL, BLEND_REPLACE, FILTER_DIRECT, FILTER_LINEAR, FILTER_QUADRATIC, HAS_METHOD_MENU, INSPECTOR_CONTROL, INSPECTOR_CONTROL_EXT, INSPECTOR_MATERIAL, INSPECTOR_MATERIAL_EXT, INSPECTOR_TEXTURE, INSPECTOR_TEXTURE_EXT, LABEL_BASE, LABEL_CENTER, LABEL_HEAD, LABEL_MIDDLE, LABEL_TAIL, LABEL_TOP, m_numLabelTypes, METHOD_EXT, PERIODIC_BOTH, PERIODIC_HEIGHT, PERIODIC_NONE, PERIODIC_WIDTH, PROJ_KLEIN_BALL, PROJ_PARALLEL, PROJ_POINCARE_BALL, PROJ_STEREOGRAPHIC, PROJ_UPPER_HALFSPACE, SIDE_BACK, SIDE_BOTH, SIDE_FRONT, SIDE_NONE`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `PgLantern()` Construct an empty discrete cylinder which is a critical value of the discrete area functional.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `java.lang.Object` | `clone()` Duplicate geometry by recursively cloning all instance variables except inspector panels and lists of registered listeners.
    `double` | `getAreaOfCylinder()`
    `double` | `getAreaOfLimit()`
    `double` | `getHeight()`
    `int` | `getProfile()`
    `double` | `getRadius()`
    `int` | `getWaist()`
    `void` | `init()` Initialize and reset instance variables after call to super.init().
    `boolean` | `isAreaConstant()`
    `boolean` | `isShowingCylinder()`
    `void` | `setAreaConstant(boolean flag)`
    `void` | `setAreaOfLimit(double area)`
    `void` | `setHeight(double height)`
    `void` | `setProfile(int discr)`
    `void` | `setRadius(double radius)`
    `void` | `setWaist(int discr)`
    `void` | `showCylinder(boolean flag)`
    `boolean` | `update(java.lang.Object event)` Update the class whenever a child has changed.

    - ### Methods inherited from class jv.geom.PgElementSet

      `addElement, addElement, allocateEdgeStars, applyModelingMatrix, assureBoundary, assureDimOfElements, assureEdgeColors, assureEdgeSizes, assureElementBackColors, assureElementColors, assureElementNormals, assureElementTextures, blend, buildPolygon, buildQuadr, buildQuadrFromCurve, buildTriangle, buildTriangleFromCurve, checkNeighbour, checkNeighbour, clearTagElement, close, computeCone, computeCylinder, computeDisk, computePlane, computeRotation, computeSnail, computeSphere, computeTorus, copy, copyConnectivity, copyConnectivitySelect, copyElementSet, copyElementSetSelect, copySelect, fixBoundaries, flipEdges, flipOrientation, getArea, getAreaOfElement, getBoundaries, getCenterOfElement, getCreaseAngle, getDimOfElement, getDimOfElements, getEdge, getEdge, getEdgeColors, getEdgeLength, getEdgeSizes, getEdgeStar, getEdgeStars, getElement, getElementBackColor, getElementBackColors, getElementColor, getElementColors, getElementEdge, getElementEdges, getElementNormal, getElementNormals, getElements, getElementTexture, getElementTextures, getElementVertices, getElementWithVertex, getFVector, getGlobalBndColor, getGlobalBndSize, getGlobalBndTagColor, getGlobalEdgeColor, getGlobalEdgeSize, getGlobalEdgeTagColor, getGlobalElementBackColor, getGlobalElementColor, getGlobalElementNormalColor, getGlobalElementNormalLength, getGlobalElementNormalSize, getGlobalElementTagColor, getIndexOfBndPolygon, getJvx, getL2Matrix, getL2Norm, getMaxDimOfElements, getMaxNumElements, getNeighbour, getNeighbourLocInd, getNeighbours, getNumBoundaries, getNumBoundaryEdges, getNumBoundaryVertices, getNumEdges, getNumEdgeStars, getNumElementIndices, getNumElements, getNumUnusedVertices, getOppVertexInd, getOppVertexLocInd, getSavedElements, getSavedNumVertices, getSelectedBndPolygon, getVertexAngle, getVertexTextures, getVertexValence, getVolume, getVolumeOfElement, hasBoundary, hasEdgeColors, hasEdgeSizes, hasElementBackColors, hasElementColors, hasElementNormals, hasElementTextures, hasTagElement, intersectionWithLine, isConforming, isEnabledEdges, isShowingBackface, isShowingBoundaries, isShowingEdgeColorFromElements, isShowingEdgeColorFromVertices, isShowingEdgeColors, isShowingEdgeLabels, isShowingEdges, isShowingEdgeSizes, isShowingElementBackColor, isShowingElementBackColors, isShowingElementColors, isShowingElementFromVertexColors, isShowingElementLabels, isShowingElementNormalArrow, isShowingElementNormals, isShowingElements, isShowingElementTexture, isShowingElementTextures, isShowingSilhouette, isShowingSmoothEdgeColors, isShowingSmoothElementColors, isShowingSmoothLighting, isShowingTaggedBoundaries, isShowingTaggedEdges, isShowingTaggedElements, makeAlternatingQuadrConn, makeCylinderConn, makeEdgeStars, makeEdgeStarsFromNeighbour, makeElementColorsFromXYZ, makeElementColorsFromZ, makeElementColorsFromZHue, makeElementFromVertexColors, makeElementFromVertexTexture, makeElementNormals, makeNeighbour, makeQuadrBnd, makeQuadrConn, makeQuadrElementTexture, makeTriangleBnd, makeTriangleConn, makeVertexFromElementColors, makeVertexNormals, markBoundary, merge, paint, printEdgeList, projectFromAmbientSpace, refineGlobalIntoFour, refineGlobalIntoFour, reflect, removeBoundaries, removeDeletedBoundaries, removeEdgeColors, removeEdgeSizes, removeElement, removeElementBackColors, removeElementColors, removeElementEdges, removeElementNormals, removeMarkedElements, removeMarkedVertices, removeTexture, removeUnusedVertices, resetBoundaryNormals, selectBndPolygon, setBoundary, setConforming, setCreaseAngle, setDimOfColors, setDimOfElement, setDimOfElements, setDimOfVectors, setDimOfVertices, setEdgeColors, setEdgeSizes, setEdgeStar, setElement, setElement, setElement, setElement, setElementBackColor, setElementBackColors, setElementColor, setElementColors, setElementEdges, setElementNormal, setElementNormals, setElements, setElementTexture, setElementTextures, setElementTexturesFromList, setElementVertices, setEnabledEdges, setGlobalBndColor, setGlobalBndSize, setGlobalBndTagColor, setGlobalEdgeColor, setGlobalEdgeSize, setGlobalEdgeTagColor, setGlobalElementBackColor, setGlobalElementColor, setGlobalElementNormalColor, setGlobalElementNormalLength, setGlobalElementNormalSize, setGlobalElementTagColor, setGlobalVertexNormalColor, setGlobalVertexNormalLength, setGlobalVertexNormalSize, setJvx, setMaxNumElements, setNeighbour, setNeighbours, setNumElements, setSavedElements, setSavedNumVertices, setTagElement, showBackface, showBoundaries, showEdgeColorFromElements, showEdgeColorFromVertices, showEdgeColors, showEdgeLabels, showEdges, showEdgeSizes, showElementBackColor, showElementBackColors, showElementColors, showElementFromVertexColors, showElementLabels, showElementNormalArrow, showElementNormals, showElements, showElementTexture, showSilhouette, showSmoothEdgeColors, showSmoothElementColors, showSmoothLighting, showTaggedBoundaries, showTaggedEdges, showTaggedElements, showVertexTexture, toString, triangulate`

    - ### Methods inherited from class jv.geom.PgPointSet

      `addGeometryItem, addVectorField, addVertex, applyAmbientMatrix, assureVertexColors, assureVertexNormals, assureVertexSizes, assureVertexTextures, clearTagVertex, getAmbientBounds, getBounds, getCenterOfBndBox, getCenterOfGravity, getDimOfColors, getDimOfTextures, getDimOfVectors, getEulerCharacteristic, getGlobalVectorColor, getGlobalVectorLength, getGlobalVectorSize, getGlobalVertexColor, getGlobalVertexNormalColor, getGlobalVertexNormalLength, getGlobalVertexNormalSize, getGlobalVertexSize, getGlobalVertexTagColor, getIndexOfVectorField, getMarkedVertices, getMaxNumVertices, getNumVectorFields, getNumVertices, getSelectedVectorField, getShininess, getSpecularColor, getTexture, getTextureImage, getTextureImageName, getTransparency, getVectorField, getVectorField, getVertex, getVertexColor, getVertexColors, getVertexNormal, getVertexNormals, getVertexSize, getVertexSizes, getVertexTexture, getVertices, hasTagVertex, hasVertex, hasVertex, hasVertexColors, hasVertexNormals, hasVertexSizes, hasVertexTextures, isDefaultLabelEnabled, isEnabledIndexLabels, isShowingIndices, isShowingSingleVectorField, isShowingTaggedVertices, isShowingTransparency, isShowingVectorArrow, isShowingVectorArrows, isShowingVectorColors, isShowingVectorField, isShowingVectorFields, isShowingVertexColors, isShowingVertexLabels, isShowingVertexNormalArrow, isShowingVertexNormals, isShowingVertexOutline, isShowingVertexSizes, isShowingVertexTexture, isShowingVertices, makeColorFromVectorLength, makeQuadrVertexTexture, makeVertexColorsFromXYZ, makeVertexColorsFromZ, makeVertexColorsFromZHue, makeVertexTextureFromBndBox, makeVertexTextureFromCylinder, makeVertexTextureFromSphere, makeVertexTextureFromUV, projectToSphere, removeAllVectorFields, removeHiddenVectorFields, removeVectorField, removeVertex, removeVertexColors, removeVertexNormals, removeVertexSizes, scale, scale, selectVectorField, setCenterOfBndBox, setDefaultLabelEnabled, setDimOfTextures, setEnabledIndexLabels, setGlobalVectorColor, setGlobalVectorLength, setGlobalVectorSize, setGlobalVertexColor, setGlobalVertexSize, setGlobalVertexSize, setGlobalVertexTagColor, setMaxNumVertices, setNumVertices, setShininess, setSpecularColor, setState, setTagVertex, setTexture, setTextureImage, setTextureImageName, setTransparency, setVertex, setVertex, setVertex, setVertex, setVertexColor, setVertexColors, setVertexNormal, setVertexNormals, setVertexSize, setVertexSizes, setVertexTexture, setVertexTextures, setVertices, showIndices, showSingleVectorField, showTaggedVertices, showTransparency, showVectorArrow, showVectorArrows, showVectorColors, showVectorField, showVectorFields, showVertexColors, showVertexLabels, showVertexNormalArrow, showVertexNormals, showVertexOutline, showVertexSizes, showVertices, translate`

    - ### Methods inherited from class jv.project.PgGeometry

      `addDisplay, addPolygon, clearTagPolygon, convertWorldToModel, fillMethodMenu, fillMethodMenu, getAmbientInvMatrix, getAmbientMatrix, getAmbientProjection, getAmbientSpace, getAuthorInfo, getAuthors, getCenter, getCenterOfElement, getControlPanel, getDiameter, getDimOfSimplex, getDimOfVertices, getDisplayList, getDisplays, getGeometryInfo, getLabelAttribute, getLabelColor, getLabelFont, getLabelSize, getLabelStyle, getMaterialPanel, getModelMatrix, getPolygon, getState, getTitle, getType, getVersion, getVersionType, hasAmbientMatrix, hasDisplay, hasModelMatrix, hasTagPolygon, isConfigurable, isEnabledInstanceSharing, isShowingBndBox, isShowingCenter, isShowingName, isShowingTitle, isVisible, removeDisplay, removeMethodMenus, removePolygon, setAmbientMatrix, setAmbientProjection, setAmbientSpace, setAuthorInfo, setAuthors, setCenter, setDimOfSimplex, setEnabledInstanceSharing, setGeometryInfo, setLabelAttribute, setLabelAttribute, setLabelColor, setLabelFont, setLabelSize, setLabelStyle, setModelMatrix, setPolygon, setTagPolygon, setTitle, setType, setVersion, setVersionType, setVisible, showBndBox, showCenter, showName, showTitle`

    - ### Methods inherited from class jv.object.PsObject

      `addInspector, addUpdateListener, assureInspector, clearTag, clone, clone, getFather, getInfoPanel, getInspector, getName, getNumObjects, getSymbol, hasInspector, hasTag, hasUpdateListener, instanceOf, instanceOf, newInspector, newInspector, removeInspector, removeInspector, removeUpdateListener, setName, setParent, setSymbol, setTag, updatePanels`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface jv.project.PgGeometryIf

      `assureInspector, getInfoPanel, getName, hasTag, setName`

    - ### Methods inherited from interface jv.object.PsUpdateIf

      `getFather, setParent`

- - ### Constructor Detail

    - #### PgLantern

          public PgLantern()

      Construct an empty discrete cylinder which is a critical value of the discrete area functional.

  - ### Method Detail

    - #### init

          public void init()

      Description copied from class: `PgElementSet`
      Initialize and reset instance variables after call to super.init().
      Overrides:
        `init` in class `PgElementSet`

    - #### clone

          public java.lang.Object clone()

      Duplicate geometry by recursively cloning all instance variables except inspector panels and lists of registered listeners. The parent relationship is maintained only within this class but not to external classes. In general, all links of the clone to external objects are set to `null`.
      Specified by:
        `clone` in interface `PgGeometryIf`
      Overrides:
        `clone` in class `PgElementSet`
      Since:
        JavaView 3.97.061
      See Also:
        `PgElementSet.copy(PsObject)`

    - #### isShowingCylinder

          public boolean isShowingCylinder()

    - #### showCylinder

          public void showCylinder(boolean flag)

    - #### isAreaConstant

          public boolean isAreaConstant()

    - #### setAreaConstant

          public void setAreaConstant(boolean flag)

    - #### getHeight

          public double getHeight()

    - #### setHeight

          public void setHeight(double height)

    - #### getRadius

          public double getRadius()

    - #### setRadius

          public void setRadius(double radius)

    - #### getAreaOfLimit

          public double getAreaOfLimit()

    - #### setAreaOfLimit

          public void setAreaOfLimit(double area)

    - #### getProfile

          public int getProfile()

    - #### setProfile

          public void setProfile(int discr)

    - #### getWaist

          public int getWaist()

    - #### setWaist

          public void setWaist(int discr)

    - #### getAreaOfCylinder

          public double getAreaOfCylinder()

    - #### update

          public boolean update(java.lang.Object event)

      Update the class whenever a child has changed. Method is usually invoked from the children.
      Specified by:
        `update` in interface `PsUpdateIf`
      Overrides:
        `update` in class `PgElementSet`
      Parameters:
        `event` - carries a lot of information
      Returns:
        true if event has been handled, otherwise false
      See Also:
        `PsObject.setParent(PsUpdateIf)`, `PsObject.getFather()`, `PsObject.addUpdateListener(PsUpdateIf)`

"

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