/*
* 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.
*/
#pragma once
#include "Rect.h"
#include <cutils/compiler.h>
#include <iomanip>
#include <ostream>
#include <SkMatrix.h>
namespace android {
namespace uirenderer {
#define SK_MATRIX_STRING "[%.2f %.2f %.2f] [%.2f %.2f %.2f] [%.2f %.2f %.2f]"
#define SK_MATRIX_ARGS(m) \
(m)->get(0), (m)->get(1), (m)->get(2), \
(m)->get(3), (m)->get(4), (m)->get(5), \
(m)->get(6), (m)->get(7), (m)->get(8)
#define MATRIX_4_STRING "[%.2f %.2f %.2f %.2f] [%.2f %.2f %.2f %.2f]" \
" [%.2f %.2f %.2f %.2f] [%.2f %.2f %.2f %.2f]"
#define MATRIX_4_ARGS(m) \
(m)->data[0], (m)->data[4], (m)->data[8], (m)->data[12], \
(m)->data[1], (m)->data[5], (m)->data[9], (m)->data[13], \
(m)->data[2], (m)->data[6], (m)->data[10], (m)->data[14], \
(m)->data[3], (m)->data[7], (m)->data[11], (m)->data[15] \
///////////////////////////////////////////////////////////////////////////////
// Classes
///////////////////////////////////////////////////////////////////////////////
class ANDROID_API Matrix4 {
public:
float data[16];
enum Entry {
kScaleX = 0,
kSkewY = 1,
kPerspective0 = 3,
kSkewX = 4,
kScaleY = 5,
kPerspective1 = 7,
kScaleZ = 10,
kTranslateX = 12,
kTranslateY = 13,
kTranslateZ = 14,
kPerspective2 = 15
};
// NOTE: The flags from kTypeIdentity to kTypePerspective
// must be kept in sync with the type flags found
// in SkMatrix
enum Type {
kTypeIdentity = 0,
kTypeTranslate = 0x1,
kTypeScale = 0x2,
kTypeAffine = 0x4,
kTypePerspective = 0x8,
kTypeRectToRect = 0x10,
kTypeUnknown = 0x20,
};
static const int sGeometryMask = 0xf;
Matrix4() {
loadIdentity();
}
Matrix4(const float* v) {
load(v);
}
Matrix4(const SkMatrix& v) {
load(v);
}
float operator[](int index) const {
return data[index];
}
float& operator[](int index) {
mType = kTypeUnknown;
return data[index];
}
Matrix4& operator=(const SkMatrix& v) {
load(v);
return *this;
}
friend bool operator==(const Matrix4& a, const Matrix4& b) {
return !memcmp(&a.data[0], &b.data[0], 16 * sizeof(float));
}
friend bool operator!=(const Matrix4& a, const Matrix4& b) {
return !(a == b);
}
void loadIdentity();
void load(const float* v);
void load(const SkMatrix& v);
void loadInverse(const Matrix4& v);
void loadTranslate(float x, float y, float z);
void loadScale(float sx, float sy, float sz);
void loadSkew(float sx, float sy);
void loadRotate(float angle);
void loadRotate(float angle, float x, float y, float z);
void loadMultiply(const Matrix4& u, const Matrix4& v);
void loadOrtho(float left, float right, float bottom, float top, float near, float far);
void loadOrtho(int width, int height) {
loadOrtho(0, width, height, 0, -1, 1);
}
uint8_t getType() const;
void multiplyInverse(const Matrix4& v) {
Matrix4 inv;
inv.loadInverse(v);
multiply(inv);
}
void multiply(const Matrix4& v) {
if (!v.isIdentity()) {
Matrix4 u;
u.loadMultiply(*this, v);
*this = u;
}
}
void multiply(float v);
void translate(float x, float y, float z = 0) {
if ((getType() & sGeometryMask) <= kTypeTranslate) {
data[kTranslateX] += x;
data[kTranslateY] += y;
data[kTranslateZ] += z;
mType |= kTypeUnknown;
} else {
// Doing a translation will only affect the translate bit of the type
// Save the type
uint8_t type = mType;
Matrix4 u;
u.loadTranslate(x, y, z);
multiply(u);
// Restore the type and fix the translate bit
mType = type;
if (data[kTranslateX] != 0.0f || data[kTranslateY] != 0.0f) {
mType |= kTypeTranslate;
} else {
mType &= ~kTypeTranslate;
}
}
}
void scale(float sx, float sy, float sz) {
Matrix4 u;
u.loadScale(sx, sy, sz);
multiply(u);
}
void skew(float sx, float sy) {
Matrix4 u;
u.loadSkew(sx, sy);
multiply(u);
}
void rotate(float angle, float x, float y, float z) {
Matrix4 u;
u.loadRotate(angle, x, y, z);
multiply(u);
}
/**
* If the matrix is identity or translate and/or scale.
*/
bool isSimple() const;
bool isPureTranslate() const;
bool isIdentity() const;
bool isPerspective() const;
bool rectToRect() const;
bool positiveScale() const;
bool changesBounds() const;
void copyTo(float* v) const;
void copyTo(SkMatrix& v) const;
float mapZ(const Vector3& orig) const;
void mapPoint3d(Vector3& vec) const;
void mapPoint(float& x, float& y) const; // 2d only
void mapRect(Rect& r) const; // 2d only
float getTranslateX() const;
float getTranslateY() const;
void decomposeScale(float& sx, float& sy) const;
void dump(const char* label = nullptr) const;
friend std::ostream& operator<<(std::ostream& os, const Matrix4& matrix) {
if (matrix.isSimple()) {
os << "offset " << matrix.getTranslateX() << "x" << matrix.getTranslateY();
if (!matrix.isPureTranslate()) {
os << ", scale " << matrix[kScaleX] << "x" << matrix[kScaleY];
}
} else {
os << "[" << matrix[0];
for (int i = 1; i < 16; i++) {
os << ", " << matrix[i];
}
os << "]";
}
return os;
}
static const Matrix4& identity();
void invalidateType() { mType = kTypeUnknown; }
private:
mutable uint8_t mType;
inline float get(int i, int j) const {
return data[i * 4 + j];
}
inline void set(int i, int j, float v) {
data[i * 4 + j] = v;
}
uint8_t getGeometryType() const;
}; // class Matrix4
///////////////////////////////////////////////////////////////////////////////
// Types
///////////////////////////////////////////////////////////////////////////////
typedef Matrix4 mat4;
}; // namespace uirenderer
}; // namespace android