Class PickIntersection
The intersected geometry is indicated by an index into the list of geometry arrays on the PickResult. It can also be inquired from this object.
The intersected primitive indicates which primitive out of the GeometryArray
was intersected (where the primitive is a point, line, triangle or quad,
not a
com.sun.j3d.utils.geometry.Primitive)
.
For example, the intersection would indicate which triangle out of a
triangle strip was intersected.
The methods which return primitive data will have one value if the primitive
is
a point, two values if the primitive is a line, three values if the primitive
is a triangle and four values if the primitive is quad.
The primitive's VWorld coordinates are saved when then intersection is calculated. The local coordinates, normal, color and texture coordinates for the primitive can also be inquired if they are present and readable.
The intersection point is the location on the primitive which intersects the pick shape closest to the center of the pick shape. The intersection point's location in VWorld coordinates is saved when the intersection is calculated. The local coordinates, normal, color and texture coordiantes of at the intersection can be interpolated if they are present and readable.
The closest vertex is the vertex of the primitive closest to the intersection point. The vertex index, VWorld coordinates and local coordinates of the closest vertex can be inquired. The normal, color and texture coordinate of the closest vertex can be inquired from the geometry array:
Vector3f getNormal(PickIntersection pi, int vertexIndex) { int index; Vector3d normal = new Vector3f(); GeometryArray ga = pickIntersection.getGeometryArray(); if (pickIntersection.geometryIsIndexed()) { index = ga.getNormalIndex(vertexIndex); } else { index = vertexIndex; } ga.getNormal(index, normal); return normal; }
The color, normal
and texture coordinate information for the intersected primitive and the
intersection point
can be inquired
the geometry includes them and the corresponding READ capibility bits are
set.
PickTool.setCapabilties(Node, int)
can be used to set the capability bits
to allow this data to be inquired.
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Method Summary
Modifier and TypeMethodDescriptionboolean
Returns true if the geometry is indexedjavax.vecmath.Point3d
Get coordinates of closest vertex (local)javax.vecmath.Point3d
Get coordinates of closest vertex (world)int
Get index of closest vertexdouble
Get the distance from the PickShape start point to the intersection pointReturns the GeometryArray for the intersectionint
Returns the index of the intersected GeometryArray into the geometry arrays in the PickResultjavax.vecmath.Color4f
Returns the color of the intersection point.javax.vecmath.Point3d
Returns the coordinates of the intersection point (local coordinates), if available.javax.vecmath.Point3d
Returns the coordinates of the intersection point (world coordinates), if available.javax.vecmath.Vector3f
Returns the normal of the intersection point.javax.vecmath.TexCoord3f
getPointTextureCoordinate
(int index) Returns the texture coordinate of the intersection point at the specifed index in the specified texture coordinate set.int[]
Get the color indices for the intersected primitive.javax.vecmath.Color4f[]
Get the colors of the intersected primitive.int[]
Get the coordinates indices for the intersected primitive.javax.vecmath.Point3d[]
Get the local coordinates intersected primitivejavax.vecmath.Point3d[]
Get VWorld coordinates of the intersected primitiveint[]
Get the normal indices for the intersected primitive.javax.vecmath.Vector3f[]
Get the normals of the intersected primitive.int[]
getPrimitiveTexCoordIndices
(int index) Get the texture coordinate indices for the intersected primitive at the specifed index in the specified texture coordinate set.javax.vecmath.TexCoord3f[]
getPrimitiveTexCoords
(int index) Get the texture coordinates of the intersected primitive at the specifed index in the specified texture coordinate set.int[]
Get vertex indices of the intersected primitivetoString()
String representation of this object
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Method Details
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toString
String representation of this object -
getPointCoordinatesVW
public javax.vecmath.Point3d getPointCoordinatesVW()Returns the coordinates of the intersection point (world coordinates), if available.- Returns:
- coordinates of the point
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getDistance
public double getDistance()Get the distance from the PickShape start point to the intersection point- Returns:
- the distance to the intersection point, if available.
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getPrimitiveCoordinatesVW
public javax.vecmath.Point3d[] getPrimitiveCoordinatesVW()Get VWorld coordinates of the intersected primitive- Returns:
- an array of Point3d's for the primitive that was picked
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getPrimitiveVertexIndices
public int[] getPrimitiveVertexIndices()Get vertex indices of the intersected primitive- Returns:
- an array which contains the list of indices
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getGeometryArrayIndex
public int getGeometryArrayIndex()Returns the index of the intersected GeometryArray into the geometry arrays in the PickResult -
getGeometryArray
Returns the GeometryArray for the intersection -
geometryIsIndexed
public boolean geometryIsIndexed()Returns true if the geometry is indexed -
getClosestVertexCoordinates
public javax.vecmath.Point3d getClosestVertexCoordinates()Get coordinates of closest vertex (local)- Returns:
- the coordinates of the vertex closest to the intersection point
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getClosestVertexCoordinatesVW
public javax.vecmath.Point3d getClosestVertexCoordinatesVW()Get coordinates of closest vertex (world)- Returns:
- the coordinates of the vertex closest to the intersection point
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getClosestVertexIndex
public int getClosestVertexIndex()Get index of closest vertex- Returns:
- the index of the closest vertex
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getPrimitiveCoordinateIndices
public int[] getPrimitiveCoordinateIndices()Get the coordinates indices for the intersected primitive. For a non-indexed primitive, this will be the same as the primitive vertex indices- Returns:
- an array indices
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getPrimitiveCoordinates
public javax.vecmath.Point3d[] getPrimitiveCoordinates()Get the local coordinates intersected primitive- Returns:
- an array of Point3d's for the primitive that was intersected
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getPrimitiveNormalIndices
public int[] getPrimitiveNormalIndices()Get the normal indices for the intersected primitive. For a non-indexed primitive, this will be the same as the primitive vertex indices If the geometry array does not contain normals this will return null- Returns:
- an array indices
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getPrimitiveNormals
public javax.vecmath.Vector3f[] getPrimitiveNormals()Get the normals of the intersected primitive. This will return null if the primitive does not contain normals.- Returns:
- an array of Point3d's for the primitive that was intersected
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getPrimitiveColorIndices
public int[] getPrimitiveColorIndices()Get the color indices for the intersected primitive. For a non-indexed primitive, this will be the same as the primitive vertex indices If the geometry array does not contain colors this will return null.- Returns:
- an array indices
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getPrimitiveColors
public javax.vecmath.Color4f[] getPrimitiveColors()Get the colors of the intersected primitive. This will return null if the primitive does not contain colors. If the geometry was defined using GeometryArray.COLOR_3, the 'w' value of the color will be set to 1.0.- Returns:
- an array of Point3d's for the primitive that was intersected
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getPrimitiveTexCoordIndices
public int[] getPrimitiveTexCoordIndices(int index) Get the texture coordinate indices for the intersected primitive at the specifed index in the specified texture coordinate set. For a non-indexed primitive, this will be the same as the primitive vertex indices If the geometry array does not contain texture coordinates, this will return null.- Returns:
- an array indices
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getPrimitiveTexCoords
public javax.vecmath.TexCoord3f[] getPrimitiveTexCoords(int index) Get the texture coordinates of the intersected primitive at the specifed index in the specified texture coordinate set. null if the primitive does not contain texture coordinates. If the geometry was defined using GeometryArray.TEXTURE_COORDINATE_2, the 'z' value of the texture coordinate will be set to 0.0.- Returns:
- an array of TexCoord3f's for the primitive that was intersected
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getPointCoordinates
public javax.vecmath.Point3d getPointCoordinates()Returns the coordinates of the intersection point (local coordinates), if available.- Returns:
- coordinates of the intersection point
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getPointNormal
public javax.vecmath.Vector3f getPointNormal()Returns the normal of the intersection point. Returns null if the geometry does not contain normals.- Returns:
- normal at the intersection point.
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getPointColor
public javax.vecmath.Color4f getPointColor()Returns the color of the intersection point. Returns null if the geometry does not contain colors. If the geometry was defined with GeometryArray.COLOR_3, the 'w' component of the color will initialized to 1.0- Returns:
- color at the intersection point.
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getPointTextureCoordinate
public javax.vecmath.TexCoord3f getPointTextureCoordinate(int index) Returns the texture coordinate of the intersection point at the specifed index in the specified texture coordinate set. Returns null if the geometry does not contain texture coordinates. If the geometry was defined with GeometryArray.TEXTURE_COORDINATE_3, the 'z' component of the texture coordinate will initialized to 0.0- Returns:
- texture coordinate at the intersection point.
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