com.openinventor.inventor.nodes

Class SoEdgeFlag

java.lang.Object

com.openinventor.inventor.Inventor

com.openinventor.inventor.misc.SoBase

com.openinventor.inventor.fields.SoFieldContainer

com.openinventor.inventor.nodes.SoNode

com.openinventor.inventor.nodes.SoEdgeFlag

All Implemented Interfaces:

SafeDisposable

public class SoEdgeFlag
extends SoNode

Class to mark/unmark edges for beveling. This node defines the current marked/unmarked edges for all subsequent shapes.

The marking/unmarking of the edges is specified using an int_32t array. The meaning of this array and its elements depends on the shape it is applied to.

SoIndexedFaceSet, SoVRMLIndexedFaceSet For an SoIndexedFaceSet or SoVRMLIndexedFaceSet, each element of the array is an index in the SoIndexedShape.coordIndex field. The vertex corresponding to this index is the first vertex of the edge. The other vertex of the edge is the next vertex in the face according to the order of the vertices in the SoIndexedFaceSet or SoVRMLIndexedFaceSet array. If the next element in the array is -1 (end of face), the next vertex is the first vertex of the current face (as for edge (5,3) in the example below). Otherwise, the next vertex is the next element in the array (as for edge (1,2) in the example below). The same edge can appear in two different faces, but it is not necessary to mark it in both faces; only one mark per edge is needed.

Example:

	0 1 2 3 4 5 6 7 8 9 10 11
coordIndex =	[ 0, 1 , 2 , -1, 3 , 4, 5 , -1, 2, 1, 3, -1 ]
edgeMarks =	[ 1 => edge (1, 2),
	6 => edge (5, 3) ]

• SoFaceSet

For an SoFaceSet, the marking is a little different from the SoIndexedFaceSet. Each element is an index directly in the coordinate array. This corresponds to the first vertex of the edge; the other is the next vertex in the same face. As each face description in the coordinate array is cyclic, the other vertex is either the next vertex in the array, or the first vertex of the face if it is the end of the face.

Example:

coordinates =	[{0.0, 1.0, 1.0},	// 0 ... start face 1
	{0.0, 0.0, 1.0} ,	// 1
	{1.0, 0.0, 1.0} ,	// 2
	{0.0, 1.0, 1.0} ,	// 3 ... start face 2
	{0.0, 0.0, 1.0},	// 4
	{1.0, 0.0, 0.0} ]	// 5
numVertices =	[ 3, 3 ]
edgeMarks =	[ 1=> edge ({0.0, 0.0, 1.0}, {1.0, 0.0, 1.0}),
	5 => edge ({1.0, 0.0, 0.0}, {0.0, 1.0, 1.0}) ]

• SoTriangleStripSet

For an SoTriangleStripSet, marking an edge is very different from the previous two nodes. If m is a mark, the edge corresponding is computed as follows:
. the first vertex is int( m /2),
. the opposite vertex in the edge is int( m /2) + m %2 + 1; if ( m %2) = 0, this is the next vertex, otherwise this is the vertex just after, in the coordinate array.

Example:

coordinates =	[ {0.0, 1.0, 1.0} ,	// 0 = int(1/2)
	{0.0, 0.0, 1.0},	// 1
	{1.0, 0.0, 1.0} ,	// 2 = int(1/2) + 1 + (1%2)
	{1.0, 1.0, 1.0},	// 3
	{0.0, 1.0, 1.0} ,	// 4 = int(8/2)
	{1.0, 0.0, 0.0} ]	// 5 = int(8/2) + 1 + (8%2)
edgeMarks =	[ 1=>edge({0.0, 1.0, 1.0}, {1.0, 0.0, 1.0}),
	8 =>edge({0.0, 1.0, 1.0}, {1.0, 0.0, 0.0}) ]

• SoIndexedTriangleStripSet

An SoIndexedTriangleStripSet works like an SoTriangleStripSet, except that the SoIndexedShape.coordIndex array is used instead of the coordinate array.

• SoQuadMesh

For an SoQuadMesh, the principle is the same as for SoTriangleStripSet. If m is the mark, then the corresponding edge is ( m /2, n ) where n is:
. the vertex just at the right of the vertex m /2 if ( m %2) = 0,
. the vertex just below if ( m %2) = 1.

Example:

coordinates =	[ {0.0, 1.0, 1.0} , {0.0, 2.0, 2.0}, {0.0, 3.0, 3.0},
	{1.0, 0.0, 1.0} , {2.0, 0.0, 2.0}, {3.0, 0.0, 3.0},
	{0.0, 1.0, 0.0}, {0.0, 2.0, 0.0} , {0.0, 3.0, 0.0} ]
edgeMarks =	[ 1=> edge({0.0, 1.0, 1.0}, {1.0, 0.0, 1.0}),
	14 => edge({0.0, 2.0, 0.0}, {0.0, 3.0, 0.0}) ]

• SoCube, SoVRMLBox

For an SoCube or an SoVRMLBox, edges are identified as shown below:

For each value between [0,11] in the flag array, the corresponding edge is marked/unmarked.

• SoCone, SoVRMLCone

For an SoCone or an SoVRMLCone, only the edges of the base can be marked/unmarked. The flag array must contain at least one value greater than or equal to 0 to mark/unmark the edges of the base.

• SoCylinder, SoVRMLCylinder

For an SoCylinder or an SoVRMLCylinder, only two values in the flag array are significant:

• array index 0: mark/unmark the edges around the bottom of the cylinder,
• array index 1: mark/unmark the edges around the top of the cylinder.
  File format/default:

EdgeFlag {

edgeMarked	-1
edgeUnmarked	-1

}

Action behavior:

Sets: SoEdgeFlagElement

See also:

SoBevelAction, SoBevelProperty, SoVertexFlag

Nested Class Summary

Nested classes/interfaces inherited from class com.openinventor.inventor.Inventor

Inventor.ConstructorCommand

Field Summary

Fields

Modifier and Type	Field and Description
SoMFInt32	edgeMarked
SoMFInt32	edgeUnmarked These are the fields for marked/unmarked edges.

Fields inherited from class com.openinventor.inventor.Inventor

VERBOSE_LEVEL, ZeroHandle

Constructor Summary

Constructors

Constructor and Description
SoEdgeFlag() Constructor.

Method Summary

Methods inherited from class com.openinventor.inventor.nodes.SoNode

affectsState, callback, copy, copy, distribute, doAction, getAlternateRep, getBoundingBox, getByName, getMatrix, getPrimitiveCount, getRenderUnitID, GLRender, GLRenderBelowPath, GLRenderInPath, GLRenderOffPath, grabEventsCleanup, grabEventsSetup, handleEvent, isBoundingBoxIgnoring, isOverride, pick, rayPick, search, setOverride, touch, write

Methods inherited from class com.openinventor.inventor.fields.SoFieldContainer

copyFieldValues, copyFieldValues, enableNotify, fieldsAreEqual, get, getAllFields, getEventIn, getEventOut, getField, getFieldName, hasDefaultValues, isNotifyEnabled, set, setToDefaults

Methods inherited from class com.openinventor.inventor.misc.SoBase

dispose, getEXTERNPROTO, getName, getPROTO, isDisposable, isSynchronizable, setName, setSynchronizable

Methods inherited from class com.openinventor.inventor.Inventor

getAddress, getNativeResourceHandle, startInternalThreads, stopInternalThreads

Methods inherited from class java.lang.Object

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

Field Detail

edgeMarked

public final SoMFInt32 edgeMarked

edgeUnmarked

public final SoMFInt32 edgeUnmarked

These are the fields for marked/unmarked edges.

Constructor Detail

SoEdgeFlag

public SoEdgeFlag()

Constructor.