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author | Tim Murray <timmurray@google.com> | 2013-12-17 13:28:17 -0800 |
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committer | Tim Murray <timmurray@google.com> | 2013-12-17 13:28:17 -0800 |
commit | d1576fb039f018ea4d55abbb2c03d542011be399 (patch) | |
tree | e69fc47ea873621e2106d69e3d08c6d8e5d7fc93 /graphics/java/android/renderscript/Matrix4f.java | |
parent | 0a11eb10ff08ad7a683cfc7c458b6625b955df2c (diff) | |
download | frameworks_base-d1576fb039f018ea4d55abbb2c03d542011be399.zip frameworks_base-d1576fb039f018ea4d55abbb2c03d542011be399.tar.gz frameworks_base-d1576fb039f018ea4d55abbb2c03d542011be399.tar.bz2 |
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.java | 493 |
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; -} |