LMatrix3d¶
from panda3d.core import LMatrix3d
-
class
LMatrix3d
¶ This is a 3-by-3 transform matrix. It typically will represent either a rotation-and-scale (no translation) matrix in 3-d, or a full affine matrix (rotation, scale, translation) in 2-d, e.g. for a texture matrix.
Inheritance diagram
-
__init__
()¶
-
__init__
(other: LMatrix3d)
-
__init__
(param0: LVecBase3d, param1: LVecBase3d, param2: LVecBase3d) Constructs the matrix from three individual rows.
-
__init__
(param0: float, param1: float, param2: float, param3: float, param4: float, param5: float, param6: float, param7: float, param8: float)
-
almostEqual
(other: LMatrix3d) → bool¶ Returns true if two matrices are memberwise equal within a default tolerance based on the numeric type.
-
almostEqual
(other: LMatrix3d, threshold: float) → bool Returns true if two matrices are memberwise equal within a specified tolerance.
-
property
cols
→ Sequence[LVecBase3d]¶ Returns the indicated column of the matrix as a three-component vector.
-
compareTo
(other: LMatrix3d) → int¶ This flavor of
compareTo()
uses a default threshold value based on the numeric type.
-
compareTo
(other: LMatrix3d, threshold: float) → int Sorts matrices lexicographically, componentwise. Returns a number less than 0 if this matrix sorts before the other one, greater than zero if it sorts after, 0 if they are equivalent (within the indicated tolerance).
-
static
convertMat
(from: CoordinateSystem, to: CoordinateSystem) → LMatrix3d¶ Returns a matrix that transforms from the indicated coordinate system to the indicated coordinate system.
-
fill
(fill_value: float) → None¶ Sets each element of the matrix to the indicated fill_value. This is of questionable value, but is sometimes useful when initializing to zero.
-
generateHash
(hashgen: ChecksumHashGenerator) → None¶ Adds the vector to the indicated hash generator.
-
generateHash
(hashgen: ChecksumHashGenerator, threshold: float) → None Adds the vector to the indicated hash generator.
-
static
getClassType
() → TypeHandle¶
-
getCol
(col: int) → LVecBase3d¶ Returns the indicated column of the matrix as a three-component vector.
-
getCol2
(col: int) → LVecBase2d¶ Returns the indicated column of the matrix as a two-component vector, ignoring the last row.
-
getData
() → None¶ Returns the address of the first of the nine data elements in the matrix. The remaining elements occupy the next eight positions in row-major order.
-
getRow
(result_vec: LVecBase3d, row: int) → None¶ Stores the indicated row of the matrix as a three-component vector.
-
getRow
(row: int) → LVecBase3d Returns the indicated row of the matrix as a three-component vector.
-
getRow2
(row: int) → LVecBase2d¶ Returns the indicated row of the matrix as a two-component vector, ignoring the last column.
-
static
identMat
() → LMatrix3d¶ Returns an identity matrix.
This function definition must appear first, since some inline functions below take advantage of it.
-
invertFrom
(other: LMatrix3d) → bool¶ Computes the inverse of the other matrix, and stores the result in this matrix. This is a fully general operation and makes no assumptions about the type of transform represented by the matrix.
The other matrix must be a different object than this matrix. However, if you need to invert a matrix in place, see
invertInPlace()
.The return value is true if the matrix was successfully inverted, false if there was a singularity.
-
invertInPlace
() → bool¶ Inverts the current matrix. Returns true if the inverse is successful, false if the matrix was singular.
-
invertTransposeFrom
(other: LMatrix3d) → bool¶ Simultaneously computes the inverse of the indicated matrix, and then the transpose of that inverse.
-
invertTransposeFrom
(other: LMatrix4d) → bool Simultaneously computes the inverse of the indicated matrix, and then the transpose of that inverse.
-
isIdentity
() → bool¶ Returns true if this is (close enough to) the identity matrix, false otherwise.
-
readDatagram
(source: DatagramIterator) → None¶ Reads the matrix from the Datagram using get_stdfloat().
-
readDatagramFixed
(scan: DatagramIterator) → None¶ Reads the matrix from the Datagram using get_float32() or get_float64(). See
writeDatagramFixed()
.
-
static
rotateMat
(angle: float) → LMatrix3d¶ Returns a matrix that rotates by the given angle in degrees counterclockwise.
-
static
rotateMat
(angle: float, axis: LVecBase3d, cs: CoordinateSystem) → LMatrix3d Returns a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector.
-
static
rotateMatNormaxis
(angle: float, axis: LVecBase3d, cs: CoordinateSystem) → LMatrix3d¶ Returns a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector. Assumes axis has been normalized.
-
property
rows
→ Sequence[LVecBase3d]¶ these versions inline better
Returns the indicated row of the matrix as a three-component vector.
Stores the indicated row of the matrix as a three-component vector.
-
static
scaleMat
(scale: LVecBase2d) → LMatrix3d¶ Returns a matrix that applies the indicated scale in each of the two axes.
-
static
scaleMat
(scale: LVecBase3d) → LMatrix3d Returns a matrix that applies the indicated scale in each of the three axes.
-
static
scaleMat
(sx: float, sy: float) → LMatrix3d Returns a matrix that applies the indicated scale in each of the two axes.
-
static
scaleMat
(sx: float, sy: float, sz: float) → LMatrix3d Returns a matrix that applies the indicated scale in each of the three axes.
-
static
scaleShearMat
(scale: LVecBase3d, shear: LVecBase3d, cs: CoordinateSystem) → LMatrix3d¶ Returns a matrix that applies the indicated scale and shear.
-
static
scaleShearMat
(sx: float, sy: float, sz: float, shxy: float, shxz: float, shyz: float, cs: CoordinateSystem) → LMatrix3d Returns a matrix that applies the indicated scale and shear.
-
set
(e00: float, e01: float, e02: float, e10: float, e11: float, e12: float, e20: float, e21: float, e22: float) → None¶
-
setCol
(col: int, v: LVecBase2d) → None¶ Replaces the indicated column of the matrix from a two-component vector, ignoring the last row.
-
setCol
(col: int, v: LVecBase3d) → None Replaces the indicated column of the matrix from a three-component vector.
-
setRotateMat
(angle: float) → None¶ Fills mat with a matrix that rotates by the given angle in degrees counterclockwise.
-
setRotateMat
(angle: float, axis: LVecBase3d, cs: CoordinateSystem) → None Fills mat with a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector.
-
setRotateMatNormaxis
(angle: float, axis: LVecBase3d, cs: CoordinateSystem) → None¶ Fills mat with a matrix that rotates by the given angle in degrees counterclockwise about the indicated vector. Assumes axis has been normalized.
-
setRow
(row: int, v: LVecBase2d) → None¶ Replaces the indicated row of the matrix from a two-component vector, ignoring the last column.
-
setRow
(row: int, v: LVecBase3d) → None Replaces the indicated row of the matrix from a three-component vector.
-
setScaleMat
(scale: LVecBase2d) → None¶ Fills mat with a matrix that applies the indicated scale in each of the two axes.
-
setScaleMat
(scale: LVecBase3d) → None Fills mat with a matrix that applies the indicated scale in each of the three axes.
-
setScaleShearMat
(scale: LVecBase3d, shear: LVecBase3d, cs: CoordinateSystem) → None¶ Fills mat with a matrix that applies the indicated scale and shear.
-
setShearMat
(shear: LVecBase3d, cs: CoordinateSystem) → None¶ Fills mat with a matrix that applies the indicated shear in each of the three planes.
-
setTranslateMat
(trans: LVecBase2d) → None¶ Fills mat with a matrix that applies the indicated translation.
-
static
shearMat
(shear: LVecBase3d, cs: CoordinateSystem) → LMatrix3d¶ Returns a matrix that applies the indicated shear in each of the three planes.
-
static
shearMat
(shxy: float, shxz: float, shyz: float, cs: CoordinateSystem) → LMatrix3d Returns a matrix that applies the indicated shear in each of the three planes.
-
static
translateMat
(trans: LVecBase2d) → LMatrix3d¶ Returns a matrix that applies the indicated translation.
-
static
translateMat
(tx: float, ty: float) → LMatrix3d Returns a matrix that applies the indicated translation.
-
writeDatagram
(destination: Datagram) → None¶ Writes the matrix to the Datagram using add_stdfloat(). This is appropriate when you want to write the matrix using the standard width setting, especially when you are writing a bam file.
-
writeDatagramFixed
(destination: Datagram) → None¶ Writes the matrix to the Datagram using add_float32() or add_float64(), depending on the type of floats in the matrix, regardless of the setting of
Datagram.setStdfloatDouble()
. This is appropriate when you want to write a fixed-width value to the datagram, especially when you are not writing a bam file.
-
xform
(v: LVecBase3d) → LVecBase3d¶ 3-component vector or point times matrix.
-
xformInPlace
(v: LVecBase3d) → None¶ 3-component vector or point times matrix.
-
xformPoint
(v: LVecBase2d) → LVecBase2d¶ The matrix transforms a 2-component point (including translation component) and returns the result. This assumes the matrix is an affine transform.
-
xformPointInPlace
(v: LVecBase2d) → None¶ The matrix transforms a 2-component point (including translation component). This assumes the matrix is an affine transform.
-
xformVec
(v: LVecBase2d) → LVecBase2d¶ The matrix transforms a 2-component vector (without translation component) and returns the result. This assumes the matrix is an affine transform.
-
xformVec
(v: LVecBase3d) → LVecBase3d The matrix transforms a 3-component vector and returns the result. This assumes the matrix is an orthonormal transform.
In practice, this is the same computation as
xform()
.
-
xformVecGeneral
(v: LVecBase3d) → LVecBase3d¶ The matrix transforms a 3-component vector (without translation component) and returns the result, as a fully general operation.
-
xformVecGeneralInPlace
(v: LVecBase3d) → None¶ The matrix transforms a 3-component vector (without translation component), as a fully general operation.
-
xformVecInPlace
(v: LVecBase2d) → None¶ The matrix transforms a 2-component vector (without translation component). This assumes the matrix is an affine transform.
-
xformVecInPlace
(v: LVecBase3d) → None The matrix transforms a 3-component vector. This assumes the matrix is an orthonormal transform.
In practice, this is the same computation as
xform()
.
-