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java.lang.Objectrender.Matrix
Provides functionality for 4x4 3D matrix manipulations. It's thread-safe.
| Constructor Summary | |
Matrix()
Default constructor. |
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Matrix(double[] a)
Constructor takes an array of 16 elements to populate the 4x4 matrix. |
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| Method Summary | |
void |
copy(Matrix src)
Copies contents from matrix src to the object matrix. |
double[] |
get()
Returns a copy of matrix (thread-safe)/ |
double |
get(int i,
int j)
Returns matrix value at m[i, j]. |
double[] |
getUnsafe()
Returns the actual array containing the matrix (not thread-safe). |
void |
identity()
Sets the object matrix to the identity matrix. |
static void |
identity(Matrix m)
Sets the desired matrix to the identity matrix. |
void |
invert(Matrix msrc)
Inverts the 4x4 matrix and stores the result in the object matrix. |
void |
postMultiply(Matrix mb)
Postmultiplies the object matrix by mb and stores the result in the object matrix; As a result, the translation, scaling and rotation operations contained in mb are effectively performed after those in the object matrix . |
void |
preMultiply(Matrix mb)
Premultiplies the object matrix by mb and stores the result in the object; As a result, the translation, scaling and rotation operations contained in mb are effectively performed before those in the object . |
void |
rotateX(double theta)
Modifies the object matrix to rotate about the X axis by angle theta. |
void |
rotateY(double theta)
Modifies the object matrix to rotate about the Y axis by angle theta. |
void |
rotateZ(double theta)
Modifies the object matrix to rotate about the Z axis by angle theta. |
void |
scale(double x,
double y,
double z)
Scales the transformation matrix by x,y,z in the respective directions. |
void |
set(int i,
int j,
double d)
Sets matrix value at m[i,j] to d. |
java.lang.String |
toString(Matrix mm)
Converts the transformation matrix to a String. |
void |
translate(double x,
double y,
double z)
Applies a translation by x, y, z to the obeject matrix. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public Matrix()
public Matrix(double[] a)
a - 4x4 quaternion values| Method Detail |
public final double get(int i,
int j)
i - row indexj - column index
public final void set(int i,
int j,
double d)
i - row indexj - column indexd - the new valuepublic final double[] getUnsafe()
get(int, int)public final double[] get()
getUnsafe()public static final void identity(Matrix m)
m - the matrix to be modifiedpublic final void identity()
public final void copy(Matrix src)
src - original matrix to be copiedpublic final void preMultiply(Matrix mb)
mb - the multiplier matrixpublic final void postMultiply(Matrix mb)
mb - the multiplier matrix
public final void translate(double x,
double y,
double z)
x - amount of translation along the x axisy - amount of translation along the y axisz - amount of translation along the z axispublic final void rotateX(double theta)
theta - angle of rotation in radianspublic final void rotateY(double theta)
theta - angle of rotation in radianspublic final void rotateZ(double theta)
theta - angle of rotation in radians
public final void scale(double x,
double y,
double z)
x - scale factor along the x axisy - scale factor along the y axisz - scale factor along the z axispublic final void invert(Matrix msrc)
msrc - original matrix to be invertedpublic final java.lang.String toString(Matrix mm)
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