Implement holders for Matrix and Vector data.
diff --git a/graphics/java/android/renderscript/Matrix4f.java b/graphics/java/android/renderscript/Matrix4f.java
new file mode 100644
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+++ b/graphics/java/android/renderscript/Matrix4f.java
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+/*
+ * Copyright (C) 2009 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;
+import android.util.Log;
+
+
+/**
+ * @hide
+ *
+ **/
+public class Matrix4f {
+
+ public Matrix4f() {
+ mMat = new float[16];
+ loadIdentity();
+ }
+
+ public float get(int i, int j) {
+ return mMat[i*4 + j];
+ }
+
+ public void set(int i, int j, float v) {
+ mMat[i*4 + j] = v;
+ }
+
+ 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;
+ }
+
+ public void load(Matrix4f src) {
+ System.arraycopy(mMat, 0, src, 0, 16);
+ }
+
+ 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;
+ }
+
+ public void loadScale(float x, float y, float z) {
+ loadIdentity();
+ mMat[0] = x;
+ mMat[5] = y;
+ mMat[10] = z;
+ }
+
+ public void loadTranslate(float x, float y, float z) {
+ loadIdentity();
+ mMat[12] = x;
+ mMat[13] = y;
+ mMat[14] = z;
+ }
+
+ 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);
+ }
+ }
+
+ 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);
+ }
+
+ 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;
+ }
+
+ public void multiply(Matrix4f rhs) {
+ Matrix4f tmp = new Matrix4f();
+ tmp.loadMultiply(this, rhs);
+ load(tmp);
+ }
+ public void rotate(float rot, float x, float y, float z) {
+ Matrix4f tmp = new Matrix4f();
+ tmp.loadRotate(rot, x, y, z);
+ multiply(tmp);
+ }
+ public void scale(float x, float y, float z) {
+ Matrix4f tmp = new Matrix4f();
+ tmp.loadScale(x, y, z);
+ multiply(tmp);
+ }
+ public void translate(float x, float y, float z) {
+ Matrix4f tmp = new Matrix4f();
+ tmp.loadTranslate(x, y, z);
+ multiply(tmp);
+ }
+
+ final float[] mMat;
+}
+
+
+
+
+