Package tacval :: Package canvas :: Package canvas3D :: Package canvases :: Package tools :: Module arcball

Module arcball

ArcBall.py -- Math utilities, vector, matrix types and ArcBall quaternion rotation class

>>> unit_test_ArcBall_module ()
unit testing ArcBall
Quat for first drag
[ 0.08438914 -0.08534209 -0.06240178  0.99080837]
First transform
[[ 0.97764552 -0.1380603   0.15858325  0.        ]
 [ 0.10925253  0.97796899  0.17787792  0.        ]
 [-0.17964739 -0.15657592  0.97119039  0.        ]
 [ 0.          0.          0.          1.        ]]
LastRot at end of first drag
[[ 0.97764552 -0.1380603   0.15858325]
 [ 0.10925253  0.97796899  0.17787792]
 [-0.17964739 -0.15657592  0.97119039]]
Quat for second drag
[ 0.00710336  0.31832787  0.02679029  0.94757545]
Second transform
[[ 0.88022292 -0.08322023 -0.46720669  0.        ]
 [ 0.14910145  0.98314685  0.10578787  0.        ]
 [ 0.45052907 -0.16277808  0.8777966   0.        ]
 [ 0.          0.          0.          1.00000001]]

Classes

[hide private]

ArcBallT

Functions

[hide private]

Matrix4fT()

source code

Matrix3fT()

source code

Quat4fT()

source code

Vector3fT()

source code

Point2fT(x=0.0, y=0.0)

source code

Vector3fDot(u, v)

source code

Vector3fCross(u, v)

source code

Vector3fLength(u)

source code

Matrix3fSetIdentity()

source code

Matrix3fMulMatrix3f(matrix_a, matrix_b)

source code

Matrix4fSVD(NewObj)

source code

Matrix4fSetRotationScaleFromMatrix3f(NewObj, three_by_three_matrix)

source code

Matrix4fSetRotationFromMatrix3f(NewObj, three_by_three_matrix)

source code

Matrix3fSetRotationFromQuat4f(q1)

source code

unit_test_ArcBall_module()

source code

_test()

source code

Variables

[hide private]

Epsilon = 1.0e-5

Imports: add_newdocs, copy, sqrt