Class iicm.utils3d.Mat4f
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Class iicm.utils3d.Mat4f
java.lang.Object
|
+----iicm.utils3d.Mat4f
- public final class Mat4f
- extends Object
Mat4f - small utilities for 4D matrices.
Copyright (c) 1997 IICM
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identity3d
- 3x3 identity matrix
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identity4d
- 4x4 identity matrix
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invertMatrix33(float[], float[])
- compute the inverse of a 3x3 matrix.
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invertMatrix33inside44(float[], float[])
- compute the inverse of the 3x3 subpart of a 4x4 matrix
without changing other elements.
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invertMatrix33of44(float[], float[])
- compute the inverse of a 3x3 subpart of a 4x4 matrix
in: 4x4 float[], out: 3x3 float[]
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invertMatrix44(float[], float[])
- compute the inverse of a 4x4 matrix, where the last column is
supposed to be (0, 0, 0, 1), i.e.
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multiplyMat43in44(float[], float[])
- multiply to 4x4 matrices, where the last column is (0, 0, 0, 1)
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printMat33(float[])
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printMat44(float[])
-
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transformPoint3Mat44(float[], float[])
- transform 3D point by 4D matrix (incl.
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transformVector3Mat44(float[], float[])
- transform 3D vector by 3x3 subpart of 4D matrix (w/o translation)
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transformVector3Mat44transp(float[], float[])
- transform 3D vector by the transposed 3x3 subpart of 4D matrix.
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transposeMatrix33(float[])
- transpose a 3x3 matrix
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transposeMatrix33inside44(float[])
- transpose the 3x3 subpart of a 4x4 matrix
without changing other elements.
identity3d
public static float identity3d[]
- 3x3 identity matrix
identity4d
public static float identity4d[]
- 4x4 identity matrix
invertMatrix33
public static boolean invertMatrix33(float mat[],
float inv[])
- compute the inverse of a 3x3 matrix.
matrix storage: 3x3 float[]
mat and inv must not point to the same storage.
- Returns:
- flag whether matrix was regular
invertMatrix44
public static boolean invertMatrix44(float mat[],
float inv[])
- compute the inverse of a 4x4 matrix, where the last column is
supposed to be (0, 0, 0, 1), i.e. without perspective transformation.
mat and inv must not point to the same storage.
- Returns:
- flag whether matrix was regular
invertMatrix33of44
public static boolean invertMatrix33of44(float mat[],
float inv[])
- compute the inverse of a 3x3 subpart of a 4x4 matrix
in: 4x4 float[], out: 3x3 float[]
- Returns:
- flag whether matrix was regular
invertMatrix33inside44
public static boolean invertMatrix33inside44(float mat[],
float inv[])
- compute the inverse of the 3x3 subpart of a 4x4 matrix
without changing other elements.
mat and inv must not point to the same storage.
- Returns:
- flag whether matrix was regular
transposeMatrix33
public static void transposeMatrix33(float mat[])
- transpose a 3x3 matrix
transposeMatrix33inside44
public static void transposeMatrix33inside44(float mat[])
- transpose the 3x3 subpart of a 4x4 matrix
without changing other elements.
transformPoint3Mat44
public static Vec3f transformPoint3Mat44(float p[],
float mat[])
- transform 3D point by 4D matrix (incl. translation)
transformVector3Mat44
public static Vec3f transformVector3Mat44(float p[],
float mat[])
- transform 3D vector by 3x3 subpart of 4D matrix (w/o translation)
transformVector3Mat44transp
public static Vec3f transformVector3Mat44transp(float p[],
float mat[])
- transform 3D vector by the transposed 3x3 subpart of 4D matrix.
(typical operation for transforming normal vectors.)
multiplyMat43in44
public static float[] multiplyMat43in44(float a[],
float b[])
- multiply to 4x4 matrices, where the last column is (0, 0, 0, 1)
printMat44
public static void printMat44(float mat[])
printMat33
public static void printMat33(float mat[])
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