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authorTim Murray <timmurray@google.com>2013-12-17 13:28:17 -0800
committerTim Murray <timmurray@google.com>2013-12-17 13:28:17 -0800
commitd1576fb039f018ea4d55abbb2c03d542011be399 (patch)
treee69fc47ea873621e2106d69e3d08c6d8e5d7fc93 /graphics/java/android/renderscript/Matrix4f.java
parent0a11eb10ff08ad7a683cfc7c458b6625b955df2c (diff)
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Move RenderScript from graphics/ to new fw/base subdirectory rs.
Change-Id: I30b6633578f063840e1bdbcc9ba513b727912a6d
Diffstat (limited to 'graphics/java/android/renderscript/Matrix4f.java')
-rw-r--r--graphics/java/android/renderscript/Matrix4f.java493
1 files changed, 0 insertions, 493 deletions
diff --git a/graphics/java/android/renderscript/Matrix4f.java b/graphics/java/android/renderscript/Matrix4f.java
deleted file mode 100644
index 5d5bf5f..0000000
--- a/graphics/java/android/renderscript/Matrix4f.java
+++ /dev/null
@@ -1,493 +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;
-
-import java.lang.Math;
-
-
-/**
- * Class for exposing the native RenderScript rs_matrix4x4 type back to the Android system.
- *
- **/
-public class Matrix4f {
-
- /**
- * Creates a new identity 4x4 matrix
- */
- public Matrix4f() {
- mMat = new float[16];
- loadIdentity();
- }
-
- /**
- * Creates a new matrix and sets its values from the given
- * parameter
- *
- * @param dataArray values to set the matrix to, must be 16
- * floats long
- */
- public Matrix4f(float[] dataArray) {
- mMat = new float[16];
- 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*4 + 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*4 + 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] = 0;
- mMat[5] = 1;
- mMat[6] = 0;
- mMat[7] = 0;
-
- mMat[8] = 0;
- mMat[9] = 0;
- mMat[10] = 1;
- mMat[11] = 0;
-
- mMat[12] = 0;
- mMat[13] = 0;
- mMat[14] = 0;
- mMat[15] = 1;
- }
-
- /**
- * Sets the values of the matrix to those of the parameter
- *
- * @param src matrix to load the values from
- */
- public void load(Matrix4f src) {
- System.arraycopy(src.getArray(), 0, mMat, 0, mMat.length);
- }
-
- /**
- * Sets the values of the matrix to those of the parameter
- *
- * @param src matrix to load the values from
- * @hide
- */
- public void load(Matrix3f src) {
- mMat[0] = src.mMat[0];
- mMat[1] = src.mMat[1];
- mMat[2] = src.mMat[2];
- mMat[3] = 0;
-
- mMat[4] = src.mMat[3];
- mMat[5] = src.mMat[4];
- mMat[6] = src.mMat[5];
- mMat[7] = 0;
-
- mMat[8] = src.mMat[6];
- mMat[9] = src.mMat[7];
- mMat[10] = src.mMat[8];
- mMat[11] = 0;
-
- mMat[12] = 0;
- mMat[13] = 0;
- mMat[14] = 0;
- mMat[15] = 1;
- }
-
- /**
- * 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;
- mMat[3] = 0;
- mMat[7] = 0;
- mMat[11]= 0;
- mMat[12]= 0;
- mMat[13]= 0;
- mMat[14]= 0;
- mMat[15]= 1;
- 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[ 4] = xy*nc - zs;
- mMat[ 8] = zx*nc + ys;
- mMat[ 1] = xy*nc + zs;
- mMat[ 5] = y*y*nc + c;
- mMat[ 9] = yz*nc - xs;
- mMat[ 2] = zx*nc - ys;
- mMat[ 6] = yz*nc + xs;
- mMat[10] = z*z*nc + c;
- }
-
- /**
- * 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[5] = y;
- mMat[10] = z;
- }
-
- /**
- * Sets current values to be a translation matrix of given
- * dimensions
- *
- * @param x translation component x
- * @param y translation component y
- * @param z translation component z
- */
- public void loadTranslate(float x, float y, float z) {
- loadIdentity();
- mMat[12] = x;
- mMat[13] = y;
- mMat[14] = z;
- }
-
- /**
- * 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(Matrix4f lhs, Matrix4f rhs) {
- for (int i=0 ; i<4 ; i++) {
- float ri0 = 0;
- float ri1 = 0;
- float ri2 = 0;
- float ri3 = 0;
- for (int j=0 ; j<4 ; 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;
- ri3 += lhs.get(j,3) * rhs_ij;
- }
- set(i,0, ri0);
- set(i,1, ri1);
- set(i,2, ri2);
- set(i,3, ri3);
- }
- }
-
- /**
- * Set current values to be an orthographic projection matrix
- *
- * @param l location of the left vertical clipping plane
- * @param r location of the right vertical clipping plane
- * @param b location of the bottom horizontal clipping plane
- * @param t location of the top horizontal clipping plane
- * @param n location of the near clipping plane
- * @param f location of the far clipping plane
- */
- public void loadOrtho(float l, float r, float b, float t, float n, float f) {
- loadIdentity();
- mMat[0] = 2 / (r - l);
- mMat[5] = 2 / (t - b);
- mMat[10]= -2 / (f - n);
- mMat[12]= -(r + l) / (r - l);
- mMat[13]= -(t + b) / (t - b);
- mMat[14]= -(f + n) / (f - n);
- }
-
- /**
- * Set current values to be an orthographic projection matrix
- * with the right and bottom clipping planes set to the given
- * values. Left and top clipping planes are set to 0. Near and
- * far are set to -1, 1 respectively
- *
- * @param w location of the right vertical clipping plane
- * @param h location of the bottom horizontal clipping plane
- *
- */
- public void loadOrthoWindow(int w, int h) {
- loadOrtho(0,w, h,0, -1,1);
- }
-
- /**
- * Sets current values to be a perspective projection matrix
- *
- * @param l location of the left vertical clipping plane
- * @param r location of the right vertical clipping plane
- * @param b location of the bottom horizontal clipping plane
- * @param t location of the top horizontal clipping plane
- * @param n location of the near clipping plane, must be positive
- * @param f location of the far clipping plane, must be positive
- *
- */
- public void loadFrustum(float l, float r, float b, float t, float n, float f) {
- loadIdentity();
- mMat[0] = 2 * n / (r - l);
- mMat[5] = 2 * n / (t - b);
- mMat[8] = (r + l) / (r - l);
- mMat[9] = (t + b) / (t - b);
- mMat[10]= -(f + n) / (f - n);
- mMat[11]= -1;
- mMat[14]= -2*f*n / (f - n);
- mMat[15]= 0;
- }
-
- /**
- * Sets current values to be a perspective projection matrix
- *
- * @param fovy vertical field of view angle in degrees
- * @param aspect aspect ratio of the screen
- * @param near near cliping plane, must be positive
- * @param far far clipping plane, must be positive
- */
- public void loadPerspective(float fovy, float aspect, float near, float far) {
- float top = near * (float)Math.tan((float) (fovy * Math.PI / 360.0f));
- float bottom = -top;
- float left = bottom * aspect;
- float right = top * aspect;
- loadFrustum(left, right, bottom, top, near, far);
- }
-
- /**
- * Helper function to set the current values to a perspective
- * projection matrix with aspect ratio defined by the parameters
- * and (near, far), (bottom, top) mapping to (-1, 1) at z = 0
- *
- * @param w screen width
- * @param h screen height
- */
- public void loadProjectionNormalized(int w, int h) {
- // range -1,1 in the narrow axis at z = 0.
- Matrix4f m1 = new Matrix4f();
- Matrix4f m2 = new Matrix4f();
-
- if(w > h) {
- float aspect = ((float)w) / h;
- m1.loadFrustum(-aspect,aspect, -1,1, 1,100);
- } else {
- float aspect = ((float)h) / w;
- m1.loadFrustum(-1,1, -aspect,aspect, 1,100);
- }
-
- m2.loadRotate(180, 0, 1, 0);
- m1.loadMultiply(m1, m2);
-
- m2.loadScale(-2, 2, 1);
- m1.loadMultiply(m1, m2);
-
- m2.loadTranslate(0, 0, 2);
- m1.loadMultiply(m1, m2);
-
- load(m1);
- }
-
- /**
- * Post-multiplies the current matrix by a given parameter
- *
- * @param rhs right hand side to multiply by
- */
- public void multiply(Matrix4f rhs) {
- Matrix4f tmp = new Matrix4f();
- 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) {
- Matrix4f tmp = new Matrix4f();
- tmp.loadRotate(rot, x, y, z);
- 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) {
- Matrix4f tmp = new Matrix4f();
- 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
- * @param z translation component z
- */
- public void translate(float x, float y, float z) {
- Matrix4f tmp = new Matrix4f();
- tmp.loadTranslate(x, y, z);
- multiply(tmp);
- }
- private float computeCofactor(int i, int j) {
- int c0 = (i+1) % 4;
- int c1 = (i+2) % 4;
- int c2 = (i+3) % 4;
- int r0 = (j+1) % 4;
- int r1 = (j+2) % 4;
- int r2 = (j+3) % 4;
-
- float minor = (mMat[c0 + 4*r0] * (mMat[c1 + 4*r1] * mMat[c2 + 4*r2] -
- mMat[c1 + 4*r2] * mMat[c2 + 4*r1]))
- - (mMat[c0 + 4*r1] * (mMat[c1 + 4*r0] * mMat[c2 + 4*r2] -
- mMat[c1 + 4*r2] * mMat[c2 + 4*r0]))
- + (mMat[c0 + 4*r2] * (mMat[c1 + 4*r0] * mMat[c2 + 4*r1] -
- mMat[c1 + 4*r1] * mMat[c2 + 4*r0]));
-
- float cofactor = ((i+j) & 1) != 0 ? -minor : minor;
- return cofactor;
- }
-
- /**
- * Sets the current matrix to its inverse
- */
- public boolean inverse() {
-
- Matrix4f result = new Matrix4f();
-
- for (int i = 0; i < 4; ++i) {
- for (int j = 0; j < 4; ++j) {
- result.mMat[4*i + j] = computeCofactor(i, j);
- }
- }
-
- // Dot product of 0th column of source and 0th row of result
- float det = mMat[0]*result.mMat[0] + mMat[4]*result.mMat[1] +
- mMat[8]*result.mMat[2] + mMat[12]*result.mMat[3];
-
- if (Math.abs(det) < 1e-6) {
- return false;
- }
-
- det = 1.0f / det;
- for (int i = 0; i < 16; ++i) {
- mMat[i] = result.mMat[i] * det;
- }
-
- return true;
- }
-
- /**
- * Sets the current matrix to its inverse transpose
- */
- public boolean inverseTranspose() {
-
- Matrix4f result = new Matrix4f();
-
- for (int i = 0; i < 4; ++i) {
- for (int j = 0; j < 4; ++j) {
- result.mMat[4*j + i] = computeCofactor(i, j);
- }
- }
-
- float det = mMat[0]*result.mMat[0] + mMat[4]*result.mMat[4] +
- mMat[8]*result.mMat[8] + mMat[12]*result.mMat[12];
-
- if (Math.abs(det) < 1e-6) {
- return false;
- }
-
- det = 1.0f / det;
- for (int i = 0; i < 16; ++i) {
- mMat[i] = result.mMat[i] * det;
- }
-
- return true;
- }
-
- /**
- * Sets the current matrix to its transpose
- */
- public void transpose() {
- for(int i = 0; i < 3; ++i) {
- for(int j = i + 1; j < 4; ++j) {
- float temp = mMat[i*4 + j];
- mMat[i*4 + j] = mMat[j*4 + i];
- mMat[j*4 + i] = temp;
- }
- }
- }
-
- final float[] mMat;
-}