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Uses of Class
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| Packages that use SpatialVector | |
|---|---|
| healpix.core | This package contains the Healpix core classes. |
| healpix.plot3d.progs.testing | |
| healpix.tools | This package contains several tools for use within the HEALPix code. |
| Uses of SpatialVector in healpix.core |
|---|
| Methods in healpix.core that return SpatialVector | |
|---|---|
SpatialVector |
HealpixIndex.Ang2Vec(double theta,
double phi)
calculates vector corresponding to angles theta (co-latitude measured from North pole, in [0,pi] radians) phi (longitude measured eastward in [0,2pi] radians) North pole is (x,y,z) = (0, 0, 1) |
SpatialVector[] |
HealpixIndex.corners_nest(int pix,
int step)
Returns set of points along the boundary of the given pixel in NEST scheme. |
SpatialVector[] |
HealpixIndex.corners_ring(long pix,
int step)
Returns set of points along the boundary of the given pixel in RING scheme. |
SpatialVector |
HealpixIndex.crossProduct(SpatialVector v1,
SpatialVector v2)
calculate cross product of two vectors |
SpatialVector |
HealpixIndex.pix2vec_nest(long pix)
Converts pix number in NEST scheme to the unit vector |
SpatialVector |
HealpixIndex.pix2vec_ring(long pix)
Converts pix number in RING scheme to the unit vector |
SpatialVector |
HealpixIndex.vector(double theta,
double phi)
Construct a SpatialVector from the angle (theta,phi) |
| Methods in healpix.core with parameters of type SpatialVector | |
|---|---|
static double |
HealpixIndex.angDist(SpatialVector v1,
SpatialVector v2)
calculates angular distance (in radians) between 2 Vectors v1 and v2 In general dist = acos(v1.v2) except if the vectors are almost aligned |
SpatialVector |
HealpixIndex.crossProduct(SpatialVector v1,
SpatialVector v2)
calculate cross product of two vectors |
double |
HealpixIndex.dotProduct(SpatialVector v1,
SpatialVector v2)
calculates a dot product (inner product) of two 3D vectors the result is double |
int[] |
Healpix.query_disc(int nside,
SpatialVector vector0,
double radius,
boolean nest,
boolean inclusive)
query_disc (Nside, Vector0, Radius, Listpix, Nlist[, Nest, Inclusive]). |
LongRangeSet |
HealpixIndex.query_disc(int nside,
SpatialVector vector,
double radius,
int nest,
int inclusive)
generates in the RING or NESTED scheme all pixels that lies within an angular distance Radius of the center. |
LongRangeSet |
HealpixIndex.query_triangle(int nside,
SpatialVector v1,
SpatialVector v2,
SpatialVector v3,
long nest,
long inclusive)
generates a list of pixels that lie inside a triangle defined by the three vertex vectors |
static double |
HealpixIndex.surfaceTriangle(SpatialVector v1,
SpatialVector v2,
SpatialVector v3)
calculates the surface of spherical triangle defined by vertices v1,v2,v3 Algorithm: finds triangle sides and uses l'Huilier formula to compute "spherical excess" = surface area of triangle on a sphere of radius one see, eg Bronshtein, Semendyayev Eq 2.86 half perimeter hp = 0.5*(side1+side2+side3) l'Huilier formula x0 = tan( hp/2.) x1 = tan((hp - side1)/2.) x2 = tan((hp - side2)/2.) x3 = tan((hp - side3)/2.) |
long |
HealpixIndex.vec2pix_nest(SpatialVector vec)
Converts the unit vector to pix number in NEST scheme |
long |
HealpixIndex.vec2pix_ring(SpatialVector vec)
Converts the unit vector to pix number in RING scheme |
double[] |
HealpixIndex.Vect2Ang(SpatialVector v)
converts a SpatialVector in a tuple of angles tup[0] = theta co-latitude measured from North pole, in [0,PI] radians, tup[1] = phi longitude measured eastward, in [0,2PI] radians |
| Uses of SpatialVector in healpix.plot3d.progs.testing |
|---|
| Methods in healpix.plot3d.progs.testing with parameters of type SpatialVector | |
|---|---|
static void |
TestingQueryPolygon.addVec(int nside,
SpatialVector vec,
HealpixMap map,
double v)
|
static void |
TestingQueryPolygon.addVec(SpatialVector vec,
HealpixMap map,
double v)
Adds the vec. |
| Uses of SpatialVector in healpix.tools |
|---|
| Methods in healpix.tools that return SpatialVector | |
|---|---|
SpatialVector |
SpatialVector.add(SpatialVector v)
vector addition |
SpatialVector |
SpatialVector.cross(SpatialVector v)
vector cross product |
SpatialVector |
SpatialVector.mul(double n)
multiply with a number |
SpatialVector |
SpatialVector.sub(SpatialVector v)
vector subtraction |
| Methods in healpix.tools with parameters of type SpatialVector | |
|---|---|
SpatialVector |
SpatialVector.add(SpatialVector v)
vector addition |
double |
SpatialVector.angle(SpatialVector v1)
Returns the angle in radians between this vector and the vector parameter; the return value is constrained to the range [0,PI]. |
SpatialVector |
SpatialVector.cross(SpatialVector v)
vector cross product |
double |
SpatialVector.dot(SpatialVector v1)
Computes the dot product of the this vector and vector v1. |
boolean |
SpatialVector.equal(SpatialVector v)
Compare vectors if coordinates are equals |
SpatialVector |
SpatialVector.sub(SpatialVector v)
vector subtraction |
| Constructors in healpix.tools with parameters of type SpatialVector | |
|---|---|
SpatialVector(SpatialVector copy)
Copy constructor - be aware this only copies x,y,z |
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