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public interface IRay2
Provides access to 3D Ray properties and methods. A ray has one endpoint (its origin) and continues infinitely in one direction.
This interface is new at ArcGIS 9.3. It supersedes IRay.
Method Summary | |
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void |
queryPlaneIntersection(_WKSPointZ pPlaneNormal,
double d,
IPoint pPoint)
Returns the point of intersection between the ray and the target plane. |
Methods inherited from interface com.esri.arcgis.geometry.IRay |
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getEnumIntersect, getOrigin, getPointAtDistance, getVector, intersect, intersects, queryFirstIntersection, queryOrigin, queryPointAtDistance, queryVector, setOrigin, setVector |
Methods inherited from interface com.esri.arcgis.geometry.IGeometry |
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geoNormalize, geoNormalizeFromLongitude, getDimension, getEnvelope, getGeometryType, getSpatialReference, isEmpty, project, queryEnvelope, setEmpty, setSpatialReferenceByRef, snapToSpatialReference |
Method Detail |
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void queryPlaneIntersection(_WKSPointZ pPlaneNormal, double d, IPoint pPoint) throws IOException, AutomationException
Given a plane represented by a point lying in the plane (IPoint pointInPlane) and a vector normal to the plane (IVector3D normalToPlane):
· pPlaneNormal represents the X, Y, and Z components of the normal vector packed into a WKSPointZ struct:
WKSPointZ pPlaneNormal = new WKSPointZ();
pPlaneNormal.X = normalToPlane.XComponent;
pPlaneNormal.Y = normalToPlane.YComponent;
pPlaneNormal.Z = normalToPlane.ZComponent;
·
D
represents the dot product of
the normal vector and a vector whose X, Y, and Z components are set
to the X, Y, and Z coordinates of the point lying in the
plane:
IVector3D vector3D = new Vector3DClass();
vector3D.SetComponents(
pointInPlane.X, pointInPlane.Y, pointInPlane.Z
);
double D =
normalToPlane.DotProduct(vector3D);
· pPoint represents the point of intersection, and should be set to a new instance of the PointClass() before it is passed to the method:
IPoint point = new PointClass();
pPlaneNormal
- A Structure: com.esri.arcgis.system._WKSPointZ (A com.esri.arcgis.system._WKSPointZ COM typedef) (in)d
- The d (in)pPoint
- A reference to a com.esri.arcgis.geometry.IPoint (in)
IOException
- If there are interop problems.
AutomationException
- If the ArcObject component throws an exception.
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