1 files changed, 212 insertions, 0 deletions
diff --git a/libs/hwui/Matrix.cpp b/libs/hwui/Matrix.cpp
new file mode 100644
index 0000000..877d3bb
--- /dev/null
+++ b/libs/hwui/Matrix.cpp
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#define LOG_TAG "OpenGLRenderer"
+
+#include <math.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <utils/Log.h>
+
+#include <SkMatrix.h>
+
+#include "Matrix.h"
+
+namespace android {
+namespace uirenderer {
+
+void Matrix4::loadIdentity() {
+    data[0]  = 1.0f;
+    data[1]  = 0.0f;
+    data[2]  = 0.0f;
+    data[3]  = 0.0f;
+
+    data[4]  = 0.0f;
+    data[5]  = 1.0f;
+    data[6]  = 0.0f;
+    data[7]  = 0.0f;
+
+    data[8]  = 0.0f;
+    data[9]  = 0.0f;
+    data[10] = 1.0f;
+    data[11] = 0.0f;
+
+    data[12] = 0.0f;
+    data[13] = 0.0f;
+    data[14] = 0.0f;
+    data[15] = 1.0f;
+}
+
+void Matrix4::load(const float* v) {
+    memcpy(data, v, sizeof(data));
+}
+
+void Matrix4::load(const Matrix4& v) {
+    memcpy(data, v.data, sizeof(data));
+}
+
+void Matrix4::load(const SkMatrix& v) {
+    memset(data, 0, sizeof(data));
+
+    data[0]  = v[SkMatrix::kMScaleX];
+    data[4]  = v[SkMatrix::kMSkewX];
+    data[12] = v[SkMatrix::kMTransX];
+
+    data[1]  = v[SkMatrix::kMSkewY];
+    data[5]  = v[SkMatrix::kMScaleY];
+    data[13] = v[SkMatrix::kMTransY];
+
+    data[3]  = v[SkMatrix::kMPersp0];
+    data[7]  = v[SkMatrix::kMPersp1];
+    data[15] = v[SkMatrix::kMPersp2];
+
+    data[10] = 1.0f;
+}
+
+void Matrix4::copyTo(SkMatrix& v) const {
+    v.reset();
+
+    v.set(SkMatrix::kMScaleX, data[0]);
+    v.set(SkMatrix::kMSkewX,  data[4]);
+    v.set(SkMatrix::kMTransX, data[12]);
+
+    v.set(SkMatrix::kMSkewY,  data[1]);
+    v.set(SkMatrix::kMScaleY, data[5]);
+    v.set(SkMatrix::kMTransY, data[13]);
+
+    v.set(SkMatrix::kMPersp0, data[3]);
+    v.set(SkMatrix::kMPersp1, data[7]);
+    v.set(SkMatrix::kMPersp2, data[15]);
+}
+
+void Matrix4::copyTo(float* v) const {
+    memcpy(v, data, sizeof(data));
+}
+
+float Matrix4::getTranslateX() {
+    return data[12];
+}
+
+float Matrix4::getTranslateY() {
+    return data[13];
+}
+
+void Matrix4::loadTranslate(float x, float y, float z) {
+    loadIdentity();
+    data[12] = x;
+    data[13] = y;
+    data[14] = z;
+}
+
+void Matrix4::loadScale(float sx, float sy, float sz) {
+    loadIdentity();
+    data[0]  = sx;
+    data[5]  = sy;
+    data[10] = sz;
+}
+
+void Matrix4::loadRotate(float angle, float x, float y, float z) {
+    data[3]  = 0.0f;
+    data[7]  = 0.0f;
+    data[11] = 0.0f;
+    data[12] = 0.0f;
+    data[13] = 0.0f;
+    data[14] = 0.0f;
+    data[15] = 1.0f;
+
+    angle *= float(M_PI / 180.0f);
+    float c = cosf(angle);
+    float s = sinf(angle);
+
+    const float length = sqrtf(x * x + y * y + z * z);
+    const float nc = 1.0f - c;
+    const float xy = x * y;
+    const float yz = y * z;
+    const float zx = z * x;
+    const float xs = x * s;
+    const float ys = y * s;
+    const float zs = z * s;
+
+    data[0]  = x * x * nc +  c;
+    data[4]  =    xy * nc - zs;
+    data[8]  =    zx * nc + ys;
+    data[1]  =    xy * nc + zs;
+    data[5]  = y * y * nc +  c;
+    data[9]  =    yz * nc - xs;
+    data[2]  =    zx * nc - ys;
+    data[6]  =    yz * nc + xs;
+    data[10] = z * z * nc +  c;
+}
+
+void Matrix4::loadMultiply(const Matrix4& u, const Matrix4& v) {
+    for (int i = 0 ; i < 4 ; i++) {
+        float x = 0;
+        float y = 0;
+        float z = 0;
+        float w = 0;
+
+        for (int j = 0 ; j < 4 ; j++) {
+            const float e = v.get(i, j);
+            x += u.get(j, 0) * e;
+            y += u.get(j, 1) * e;
+            z += u.get(j, 2) * e;
+            w += u.get(j, 3) * e;
+        }
+
+        set(i, 0, x);
+        set(i, 1, y);
+        set(i, 2, z);
+        set(i, 3, w);
+    }
+}
+
+void Matrix4::loadOrtho(float left, float right, float bottom, float top, float near, float far) {
+    loadIdentity();
+    data[0]  = 2.0f / (right - left);
+    data[5]  = 2.0f / (top - bottom);
+    data[10] = -2.0f / (far - near);
+    data[12] = -(right + left) / (right - left);
+    data[13] = -(top + bottom) / (top - bottom);
+    data[14] = -(far + near) / (far - near);
+}
+
+#define MUL_ADD_STORE(a, b, c) a = (a) * (b) + (c)
+
+void Matrix4::mapRect(Rect& r) const {
+    const float sx = data[0];
+    const float sy = data[5];
+
+    const float tx = data[12];
+    const float ty = data[13];
+
+    MUL_ADD_STORE(r.left, sx, tx);
+    MUL_ADD_STORE(r.right, sx, tx);
+    MUL_ADD_STORE(r.top, sy, ty);
+    MUL_ADD_STORE(r.bottom, sy, ty);
+}
+
+void Matrix4::dump() const {
+    LOGD("Matrix4[");
+    LOGD("  %f %f %f %f", data[0], data[4], data[ 8], data[12]);
+    LOGD("  %f %f %f %f", data[1], data[5], data[ 9], data[13]);
+    LOGD("  %f %f %f %f", data[2], data[6], data[10], data[14]);
+    LOGD("  %f %f %f %f", data[3], data[7], data[11], data[15]);
+    LOGD("]");
+}
+
+}; // namespace uirenderer
+}; // namespace android