org.h2gis.utilities.jts_utils

Class TriMarkers

java.lang.Object

org.locationtech.jts.geom.Triangle

org.h2gis.utilities.jts_utils.TriMarkers

public class TriMarkers
extends org.locationtech.jts.geom.Triangle

Used by TriangleContouring. Add the constraint of CCW orientation Store also three double values, one fore each vertices ANR EvalPDU IFSTTAR 11_05_2011

Author:

Nicolas FORTIN, Judicaël PICAUT

Field Summary

Fields inherited from class org.locationtech.jts.geom.Triangle

p0, p1, p2

Constructor Summary

Constructors

Constructor and Description
TriMarkers() Default constructor
TriMarkers(org.locationtech.jts.geom.Coordinate p0, org.locationtech.jts.geom.Coordinate p1, org.locationtech.jts.geom.Coordinate p2, double m1, double m2, double m3) Constructor

Method Summary

Modifier and Type	Method and Description
static org.locationtech.jts.math.Vector3D	getNormalVector(org.locationtech.jts.geom.Triangle t) Get the normal vector to this triangle, of length 1.
static double	getSlopeInPercent(org.locationtech.jts.math.Vector3D normal, double epsilon)
static org.locationtech.jts.math.Vector3D	getSteepestVector(org.locationtech.jts.math.Vector3D normal, double epsilon) Get the vector with the highest down slope in the plan.
static boolean	intersects(org.locationtech.jts.geom.Coordinate p, org.locationtech.jts.geom.Triangle t) Test if a coordinate intersects the triangle http://www.blackpawn.com/texts/pointinpoly/default.html
String	toString()

Methods inherited from class org.locationtech.jts.geom.Triangle

angleBisector, area, area, area3D, area3D, centroid, centroid, circumcentre, circumcentre, inCentre, inCentre, interpolateZ, interpolateZ, isAcute, isAcute, longestSideLength, longestSideLength, perpendicularBisector, signedArea, signedArea

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TriMarkers

public TriMarkers()

Default constructor

TriMarkers

public TriMarkers(org.locationtech.jts.geom.Coordinate p0,
                  org.locationtech.jts.geom.Coordinate p1,
                  org.locationtech.jts.geom.Coordinate p2,
                  double m1,
                  double m2,
                  double m3)

Constructor

Parameters:

p0 - First vertex

p1 - Second vertex

p2 - Third vertex

m1 - First vertex attribute

m2 - Second vertex attribute

m3 - Third vertex attribute

Method Detail

toString

public String toString()

Overrides:

toString in class Object

getNormalVector

public static org.locationtech.jts.math.Vector3D getNormalVector(org.locationtech.jts.geom.Triangle t)
                                                          throws IllegalArgumentException

Get the normal vector to this triangle, of length 1.

Parameters:

t - input triangle

Returns:

vector normal to the triangle.

Throws:

IllegalArgumentException

getSteepestVector

public static org.locationtech.jts.math.Vector3D getSteepestVector(org.locationtech.jts.math.Vector3D normal,
                                                                   double epsilon)

Get the vector with the highest down slope in the plan.

Parameters:

normal -

epsilon -

Returns:

the steepest vector.

getSlopeInPercent

public static double getSlopeInPercent(org.locationtech.jts.math.Vector3D normal,
                                       double epsilon)

Parameters:

normal - Plane normal

epsilon - Epsilon value ex:1e-12

Returns:

The steepest slope of this plane in degree.

intersects

public static boolean intersects(org.locationtech.jts.geom.Coordinate p,
                                 org.locationtech.jts.geom.Triangle t)

Test if a coordinate intersects the triangle

http://www.blackpawn.com/texts/pointinpoly/default.html

Parameters:

p - Coordinate of the point

t - input triangle

Returns:

True if the coordinate is in triangle