net.von_gagern.martin.confoo.mesh.flat
Class Triangle2D

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<V>
          net.von_gagern.martin.confoo.mesh.SimpleTriangle<Vertex2D>
              net.von_gagern.martin.confoo.mesh.flat.Triangle2D

All Implemented Interfaces:

Shape, Iterable<Vertex2D>, Collection<Vertex2D>, List<Vertex2D>, CorneredTriangle<Vertex2D>

public class Triangle2D
extends SimpleTriangle<Vertex2D>
implements Shape

A 2D triangle which is also a shape.

Since:

1.0

Author:

Martin von Gagern

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Triangle2D(double x1, double y1, double x2, double y2, double x3, double y3)
Construct triangle from corner coordinates.

Triangle2D(Point2D p1, Point2D p2, Point2D p3)
Construct triangle from three corner points.

Triangle2D(Vertex2D p1, Vertex2D p2, Vertex2D p3)
Construct triangle from three vertices.

Method Summary

boolean	contains(double x, double y) Determine whether a point given by its coordinates lies within the triangle.
boolean	contains(double x, double y, double w, double h) Determine whether the triangle completely contains a rectangle given by its coordinates.
boolean	contains(Point2D p) Determine whether a given point lies within the triangle.
boolean	contains(Rectangle2D r) Determine whether the triangle completely contains a given rectangle.
Rectangle	getBounds() Calculate integer bounding box.
Rectangle2D	getBounds2D() Calculate bounding box.
PathIterator	getPathIterator(AffineTransform at) Get a path iterator for this shape.
PathIterator	getPathIterator(AffineTransform at, double flatness) Get a flattening path iterator for this shape.
boolean	intersects(double x, double y, double w, double h) Determine whether the triangle intersects a rectangle given by its coordinates.
boolean	intersects(Rectangle2D r) Determine whether the triangle intersects a given rectangle.

Methods inherited from class net.von_gagern.martin.confoo.mesh.SimpleTriangle

equal, equals, get, getCorner, hashCode, size

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, indexOf, iterator, lastIndexOf, listIterator, listIterator, remove, removeRange, set, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Constructor Detail

Triangle2D

public Triangle2D(Vertex2D p1,
                  Vertex2D p2,
                  Vertex2D p3)

Construct triangle from three vertices.

Parameters:

p1 - first vertex

p2 - second vertex

p3 - third vertex

Triangle2D

public Triangle2D(Point2D p1,
                  Point2D p2,
                  Point2D p3)

Construct triangle from three corner points. The points will be used to construct Vertex2D objects. After that, changes to the points won't affect the triangle object.

Parameters:

p1 - first corner point

p2 - second corner point

p3 - third corner point

Triangle2D

public Triangle2D(double x1,
                  double y1,
                  double x2,
                  double y2,
                  double x3,
                  double y3)

Construct triangle from corner coordinates.

Parameters:

x1 - first corner x coordinate

y1 - first corner y coordinate

x2 - second corner x coordinate

y2 - second corner y coordinate

x3 - third corner x coordinate

y3 - third corner y coordinate

Method Detail

getBounds

public Rectangle getBounds()

Calculate integer bounding box.

Specified by:

getBounds in interface Shape

Returns:

integer bounding box containing the triangle

See Also:

getBounds2D()

getBounds2D

public Rectangle2D getBounds2D()

Calculate bounding box. The bounding box will not contain all corner points, as a rectangle does not contain points on its lower and right boundary.

Specified by:

getBounds2D in interface Shape

Returns:

bounding box containing the triangle

contains

public boolean contains(double x,
                        double y)

Determine whether a point given by its coordinates lies within the triangle.

Specified by:

contains in interface Shape

Parameters:

x - the x coordinate of a point

y - the y coordinate of a point

Returns:

whether the triangle contains the point

contains

public boolean contains(Point2D p)

Determine whether a given point lies within the triangle.

Specified by:

contains in interface Shape

Parameters:

p - a point to check for insideness

Returns:

whether the triangle contains the point

contains

public boolean contains(double x,
                        double y,
                        double w,
                        double h)

Determine whether the triangle completely contains a rectangle given by its coordinates.

Specified by:

contains in interface Shape

Parameters:

x - the x coordinate of a rectangle

y - the y coordinate of a rectangle

w - width of a rectangle

h - height of a rectangle

Returns:

whether the triangle contains the rectangle

contains

public boolean contains(Rectangle2D r)

Determine whether the triangle completely contains a given rectangle.

Specified by:

contains in interface Shape

Parameters:

r - a rectangle to check for containment

Returns:

whether the triangle contains the rectangle

intersects

public boolean intersects(double x,
                          double y,
                          double w,
                          double h)

Determine whether the triangle intersects a rectangle given by its coordinates.

Specified by:

intersects in interface Shape

Parameters:

x - the x coordinate of a rectangle

y - the y coordinate of a rectangle

w - width of a rectangle

h - height of a rectangle

Returns:

whether the triangle intersects the rectangle

intersects

public boolean intersects(Rectangle2D r)

Determine whether the triangle intersects a given rectangle.

Specified by:

intersects in interface Shape

Parameters:

r - a rectangle to check for intersection

Returns:

whether the triangle intersects the rectangle

getPathIterator

public PathIterator getPathIterator(AffineTransform at)

Get a path iterator for this shape.

Specified by:

getPathIterator in interface Shape

Parameters:

at - a transformation to be applied to all coordinates

Returns:

an iterator over the triangle outline

getPathIterator

public PathIterator getPathIterator(AffineTransform at,
                                    double flatness)

Get a flattening path iterator for this shape. As triangles are flat already, this is equal to the non-flattening version.

Specified by:

getPathIterator in interface Shape

Parameters:

at - a transformation to be applied to all coordinates

Returns:

an iterator over the triangle outline

See Also:

getPathIterator(AffineTransform)