summaryrefslogtreecommitdiffstats
path: root/graphics/java/android/renderscript/Matrix3f.java
diff options
context:
space:
mode:
Diffstat (limited to 'graphics/java/android/renderscript/Matrix3f.java')
-rw-r--r--graphics/java/android/renderscript/Matrix3f.java318
1 files changed, 0 insertions, 318 deletions
diff --git a/graphics/java/android/renderscript/Matrix3f.java b/graphics/java/android/renderscript/Matrix3f.java
deleted file mode 100644
index 9a4af77..0000000
--- a/graphics/java/android/renderscript/Matrix3f.java
+++ /dev/null
@@ -1,318 +0,0 @@
-/*
- * Copyright (C) 2009-2012 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.renderscript;
-
-
-/**
- * Class for exposing the native RenderScript rs_matrix3x3 type back to the Android system.
- *
- **/
-public class Matrix3f {
-
- /**
- * Creates a new identity 3x3 matrix
- */
- public Matrix3f() {
- mMat = new float[9];
- loadIdentity();
- }
-
- /**
- * Creates a new matrix and sets its values from the given
- * parameter
- *
- * @param dataArray values to set the matrix to, must be 9
- * floats long
- */
- public Matrix3f(float[] dataArray) {
- mMat = new float[9];
- System.arraycopy(dataArray, 0, mMat, 0, mMat.length);
- }
-
- /**
- * Return a reference to the internal array representing matrix
- * values. Modifying this array will also change the matrix
- *
- * @return internal array representing the matrix
- */
- public float[] getArray() {
- return mMat;
- }
-
- /**
- * Returns the value for a given row and column
- *
- * @param x column of the value to return
- * @param y row of the value to return
- *
- * @return value in the yth row and xth column
- */
- public float get(int x, int y) {
- return mMat[x*3 + y];
- }
-
- /**
- * Sets the value for a given row and column
- *
- * @param x column of the value to set
- * @param y row of the value to set
- */
- public void set(int x, int y, float v) {
- mMat[x*3 + y] = v;
- }
-
- /**
- * Sets the matrix values to identity
- */
- public void loadIdentity() {
- mMat[0] = 1;
- mMat[1] = 0;
- mMat[2] = 0;
-
- mMat[3] = 0;
- mMat[4] = 1;
- mMat[5] = 0;
-
- mMat[6] = 0;
- mMat[7] = 0;
- mMat[8] = 1;
- }
-
- /**
- * Sets the values of the matrix to those of the parameter
- *
- * @param src matrix to load the values from
- */
- public void load(Matrix3f src) {
- System.arraycopy(src.getArray(), 0, mMat, 0, mMat.length);
- }
-
- /**
- * Sets current values to be a rotation matrix of certain angle
- * about a given axis
- *
- * @param rot angle of rotation
- * @param x rotation axis x
- * @param y rotation axis y
- * @param z rotation axis z
- */
- public void loadRotate(float rot, float x, float y, float z) {
- float c, s;
- rot *= (float)(java.lang.Math.PI / 180.0f);
- c = (float)java.lang.Math.cos(rot);
- s = (float)java.lang.Math.sin(rot);
-
- float len = (float)java.lang.Math.sqrt(x*x + y*y + z*z);
- if (!(len != 1)) {
- float recipLen = 1.f / len;
- x *= recipLen;
- y *= recipLen;
- z *= recipLen;
- }
- float nc = 1.0f - c;
- float xy = x * y;
- float yz = y * z;
- float zx = z * x;
- float xs = x * s;
- float ys = y * s;
- float zs = z * s;
- mMat[0] = x*x*nc + c;
- mMat[3] = xy*nc - zs;
- mMat[6] = zx*nc + ys;
- mMat[1] = xy*nc + zs;
- mMat[4] = y*y*nc + c;
- mMat[7] = yz*nc - xs;
- mMat[2] = zx*nc - ys;
- mMat[5] = yz*nc + xs;
- mMat[8] = z*z*nc + c;
- }
-
- /**
- * Makes the upper 2x2 a rotation matrix of the given angle
- *
- * @param rot rotation angle
- */
- public void loadRotate(float rot) {
- loadIdentity();
- float c, s;
- rot *= (float)(java.lang.Math.PI / 180.0f);
- c = (float)java.lang.Math.cos(rot);
- s = (float)java.lang.Math.sin(rot);
- mMat[0] = c;
- mMat[1] = -s;
- mMat[3] = s;
- mMat[4] = c;
- }
-
- /**
- * Makes the upper 2x2 a scale matrix of given dimensions
- *
- * @param x scale component x
- * @param y scale component y
- */
- public void loadScale(float x, float y) {
- loadIdentity();
- mMat[0] = x;
- mMat[4] = y;
- }
-
- /**
- * Sets current values to be a scale matrix of given dimensions
- *
- * @param x scale component x
- * @param y scale component y
- * @param z scale component z
- */
- public void loadScale(float x, float y, float z) {
- loadIdentity();
- mMat[0] = x;
- mMat[4] = y;
- mMat[8] = z;
- }
-
- /**
- * Sets current values to be a translation matrix of given
- * dimensions
- *
- * @param x translation component x
- * @param y translation component y
- */
- public void loadTranslate(float x, float y) {
- loadIdentity();
- mMat[6] = x;
- mMat[7] = y;
- }
-
- /**
- * Sets current values to be the result of multiplying two given
- * matrices
- *
- * @param lhs left hand side matrix
- * @param rhs right hand side matrix
- */
- public void loadMultiply(Matrix3f lhs, Matrix3f rhs) {
- for (int i=0 ; i<3 ; i++) {
- float ri0 = 0;
- float ri1 = 0;
- float ri2 = 0;
- for (int j=0 ; j<3 ; j++) {
- float rhs_ij = rhs.get(i,j);
- ri0 += lhs.get(j,0) * rhs_ij;
- ri1 += lhs.get(j,1) * rhs_ij;
- ri2 += lhs.get(j,2) * rhs_ij;
- }
- set(i,0, ri0);
- set(i,1, ri1);
- set(i,2, ri2);
- }
- }
-
- /**
- * Post-multiplies the current matrix by a given parameter
- *
- * @param rhs right hand side to multiply by
- */
- public void multiply(Matrix3f rhs) {
- Matrix3f tmp = new Matrix3f();
- tmp.loadMultiply(this, rhs);
- load(tmp);
- }
-
- /**
- * Modifies the current matrix by post-multiplying it with a
- * rotation matrix of certain angle about a given axis
- *
- * @param rot angle of rotation
- * @param x rotation axis x
- * @param y rotation axis y
- * @param z rotation axis z
- */
- public void rotate(float rot, float x, float y, float z) {
- Matrix3f tmp = new Matrix3f();
- tmp.loadRotate(rot, x, y, z);
- multiply(tmp);
- }
-
- /**
- * Modifies the upper 2x2 of the current matrix by
- * post-multiplying it with a rotation matrix of given angle
- *
- * @param rot angle of rotation
- */
- public void rotate(float rot) {
- Matrix3f tmp = new Matrix3f();
- tmp.loadRotate(rot);
- multiply(tmp);
- }
-
- /**
- * Modifies the upper 2x2 of the current matrix by
- * post-multiplying it with a scale matrix of given dimensions
- *
- * @param x scale component x
- * @param y scale component y
- */
- public void scale(float x, float y) {
- Matrix3f tmp = new Matrix3f();
- tmp.loadScale(x, y);
- multiply(tmp);
- }
-
- /**
- * Modifies the current matrix by post-multiplying it with a
- * scale matrix of given dimensions
- *
- * @param x scale component x
- * @param y scale component y
- * @param z scale component z
- */
- public void scale(float x, float y, float z) {
- Matrix3f tmp = new Matrix3f();
- tmp.loadScale(x, y, z);
- multiply(tmp);
- }
-
- /**
- * Modifies the current matrix by post-multiplying it with a
- * translation matrix of given dimensions
- *
- * @param x translation component x
- * @param y translation component y
- */
- public void translate(float x, float y) {
- Matrix3f tmp = new Matrix3f();
- tmp.loadTranslate(x, y);
- multiply(tmp);
- }
-
- /**
- * Sets the current matrix to its transpose
- */
- public void transpose() {
- for(int i = 0; i < 2; ++i) {
- for(int j = i + 1; j < 3; ++j) {
- float temp = mMat[i*3 + j];
- mMat[i*3 + j] = mMat[j*3 + i];
- mMat[j*3 + i] = temp;
- }
- }
- }
-
- final float[] mMat;
-}
-
-
generated by cgit v1.1 at 2025-01-09 03:45:43 +0000