hdrc3DHelpers

Summary

hdrc3DHelpers (com.fovia.hdrc.utils.hdrc3DHelpers) is a Java utility package with various 3D mathematical functions

Methods

getPlaneEquation

static PLANEEQF com.fovia.hdrc.utils.hdrc3DHelpers.getPlaneEquation ( MATRIX44D transform )

static

Returns the plane equation for a given projection plane position.

Parameters

transform

Returns

References com.fovia.hdrcsrv.PLANEEQF.b, and com.fovia.hdrcsrv.PLANEEQF.d.

static PLANEEQF com.fovia.hdrc.utils.hdrc3DHelpers.getPlaneEquation	(	VECTOR3D	pt1,
		VECTOR3D	pt2,
		VECTOR3D	pt3
	)

static

Given three points in 3D space, this will return the plane equation for the plane they all lie upon.

Parameters

pt1
pt2
pt3

Returns

References com.fovia.hdrcsrv.VECTOR3D.x, com.fovia.hdrcsrv.VECTOR3D.y, and com.fovia.hdrcsrv.VECTOR3D.z.

Referenced by com.fovia.hdrc.utils.hdrc3DHelpers.getVolumeBoxPlanes().

getLineOfIntersection

static VECTOR3D [] com.fovia.hdrc.utils.hdrc3DHelpers.getLineOfIntersection	(	PLANEEQF	p1,
		PLANEEQF	p2
	)

static

Adapted from a web site by Paul Bourke http://local.wasp.uwa.edu.au/~pbourke/geometry/planeplane/

Do note that this is a relatively expensive operation. It should not be done thousands of times per frame.

Parameters

p1	PLANEEQF
p2	PLANEEQF

Returns: VECTOR3D[]

References com.fovia.hdrcsrv.PLANEEQF.a, com.fovia.hdrcsrv.PLANEEQF.b, com.fovia.hdrcsrv.PLANEEQF.c, com.fovia.hdrcsrv.PLANEEQF.d, com.fovia.hdrcsrv.VECTOR3D.scale(), com.fovia.hdrcsrv.VECTOR3D.x, com.fovia.hdrcsrv.VECTOR3D.y, and com.fovia.hdrcsrv.VECTOR3D.z.

getPointOfIntersection

missing from Doxygen

volume2ProjectionPlane

static VECTOR3D [] com.fovia.hdrc.utils.hdrc3DHelpers.clipLineToRectangle	(	VECTOR3D	line[],
		VECTOR3D	rect[]
	)

static

While it takes inand returns 3D vectors, this is a purely 2D function. Only X and Y are considered in calculations. null is returned if the line does not intersect with the rectangle. Note that this function will only work with axis-aligned rectangles. If you're rect isn't axis aligned, either write a new function or make it axis aligned via rotation.

Parameters

line	Two points on the line in question.
rect	Two points that define a rectangle. The ordering of the points should be top-left then bottom-right.

Returns: VECTOR3D[]

clipLineToRectangle

static VECTOR3D [] com.fovia.hdrc.utils.hdrc3DHelpers.getLineOfIntersection	(	PLANEEQF	p1,
		PLANEEQF	p2
	)

static

Adapted from a web site by Paul Bourke http://local.wasp.uwa.edu.au/~pbourke/geometry/planeplane/

Do note that this is a relatively expensive operation. It should not be done thousands of times per frame.

Parameters

p1	PLANEEQF
p2	PLANEEQF

Returns: VECTOR3D[]

renderImageLoc2VolumeCoordinates

missing from Doxygen

Doxygen Links

Complete details of member variables and class names are available in the source level documentation available from these links to Doxygen.

C++	N/A
Java / .NET	hdrc3DHelpers