1edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project/* 2edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 3edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 4edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * you may not use this file except in compliance with the License. 6edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * You may obtain a copy of the License at 7edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 8edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * 10edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * See the License for the specific language governing permissions and 14edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project * limitations under the License. 15edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project */ 16edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 17eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian#include <math.h> 18edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 19eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian#include <cutils/compiler.h> 20eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian#include <utils/String8.h> 21eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian#include <ui/Region.h> 22edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 2397c602c5af5f3ffd69009bf496d86347b71a2b4cMathias Agopian#include "clz.h" 24edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project#include "Transform.h" 25edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 26edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 27edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 28eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopiannamespace android { 29edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 30edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 31edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 32eda65400f5ae301e26c5f52287d831f063069ec2Mathias AgopianTransform::Transform() { 33eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian reset(); 34edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 35edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 36edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectTransform::Transform(const Transform& other) 37eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian : mMatrix(other.mMatrix), mType(other.mType) { 38edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 39edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 40eda65400f5ae301e26c5f52287d831f063069ec2Mathias AgopianTransform::Transform(uint32_t orientation) { 41eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian set(orientation, 0, 0); 4252e7200b6e020bba978c36e3a928493a3f2c8a92Chih-Chung Chang} 4352e7200b6e020bba978c36e3a928493a3f2c8a92Chih-Chung Chang 44edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectTransform::~Transform() { 45edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 46edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 47d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopianstatic const float EPSILON = 0.0f; 48eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 49eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianbool Transform::isZero(float f) { 50d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian return fabs(f) <= EPSILON; 51eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian} 52eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 53d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopianbool Transform::absIsOne(float f) { 54d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian return isZero(fabs(f) - 1.0f); 55eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian} 56eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 57edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectTransform Transform::operator * (const Transform& rhs) const 58edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 59eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (CC_LIKELY(mType == IDENTITY)) 60edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return rhs; 61edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 62edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Transform r(*this); 63eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (rhs.mType == IDENTITY) 64eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return r; 65eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 66eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian // TODO: we could use mType to optimize the matrix multiply 67eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const mat33& A(mMatrix); 68eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const mat33& B(rhs.mMatrix); 69eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mat33& D(r.mMatrix); 70eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian for (int i=0 ; i<3 ; i++) { 71eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float v0 = A[0][i]; 72eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float v1 = A[1][i]; 73eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float v2 = A[2][i]; 74eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian D[0][i] = v0*B[0][0] + v1*B[0][1] + v2*B[0][2]; 75eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian D[1][i] = v0*B[1][0] + v1*B[1][1] + v2*B[1][2]; 76eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian D[2][i] = v0*B[2][0] + v1*B[2][1] + v2*B[2][2]; 77eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 78edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project r.mType |= rhs.mType; 79edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 80eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian // TODO: we could recompute this value from r and rhs 81eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r.mType &= 0xFF; 82eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r.mType |= UNKNOWN_TYPE; 83edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return r; 84edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 85edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 86eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianfloat const* Transform::operator [] (int i) const { 87eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return mMatrix[i].v; 88edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 89edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 90edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool Transform::transformed() const { 91eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return type() > TRANSLATE; 92edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 93edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 9441b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopianfloat Transform::tx() const { 9541b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopian return mMatrix[2][0]; 96edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 97edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 9841b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopianfloat Transform::ty() const { 9941b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopian return mMatrix[2][1]; 100edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 101edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 102edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectvoid Transform::reset() { 103eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType = IDENTITY; 104eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian for(int i=0 ; i<3 ; i++) { 105eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec3& v(mMatrix[i]); 106eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian for (int j=0 ; j<3 ; j++) 107eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian v[j] = ((i==j) ? 1.0f : 0.0f); 108eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 109edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 110edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 111eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianvoid Transform::set(float tx, float ty) 112edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 113eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mMatrix[2][0] = tx; 114eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mMatrix[2][1] = ty; 115eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mMatrix[2][2] = 1.0f; 116eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 117eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (isZero(tx) && isZero(ty)) { 118eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType &= ~TRANSLATE; 119eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } else { 120eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType |= TRANSLATE; 121eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 122edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 123edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 124eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianvoid Transform::set(float a, float b, float c, float d) 1250d1318b974feba2e6ff13e36a1781343c2fce045Mathias Agopian{ 126eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mat33& M(mMatrix); 127eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian M[0][0] = a; M[1][0] = b; 128eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian M[0][1] = c; M[1][1] = d; 129eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian M[0][2] = 0; M[1][2] = 0; 130eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType = UNKNOWN_TYPE; 1310d1318b974feba2e6ff13e36a1781343c2fce045Mathias Agopian} 1320d1318b974feba2e6ff13e36a1781343c2fce045Mathias Agopian 133d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopianstatus_t Transform::set(uint32_t flags, float w, float h) 134edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 135d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (flags & ROT_INVALID) { 136d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian // that's not allowed! 137d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian reset(); 138d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian return BAD_VALUE; 139d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian } 140d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian 1410694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian Transform H, V, R; 142883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian if (flags & ROT_90) { 143883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian // w & h are inverted when rotating by 90 degrees 144883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian swap(w, h); 145883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian } 146883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian 147eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (flags & FLIP_H) { 1480694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian H.mType = (FLIP_H << 8) | SCALE; 1490694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian H.mType |= isZero(w) ? IDENTITY : TRANSLATE; 1500694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian mat33& M(H.mMatrix); 1510694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian M[0][0] = -1; 1520694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian M[2][0] = w; 153eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 154eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 155eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (flags & FLIP_V) { 1560694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian V.mType = (FLIP_V << 8) | SCALE; 1570694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian V.mType |= isZero(h) ? IDENTITY : TRANSLATE; 1580694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian mat33& M(V.mMatrix); 1590694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian M[1][1] = -1; 1600694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian M[2][1] = h; 161eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 162eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 1630694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian if (flags & ROT_90) { 164883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian const float original_w = h; 1650694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian R.mType = (ROT_90 << 8) | ROTATE; 166883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian R.mType |= isZero(original_w) ? IDENTITY : TRANSLATE; 1670694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian mat33& M(R.mMatrix); 168883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian M[0][0] = 0; M[1][0] =-1; M[2][0] = original_w; 1690694d0f3b3d016b9eedda13c447e8e7735a4a177Mathias Agopian M[0][1] = 1; M[1][1] = 0; 170eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 171eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 172883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian *this = (R*(H*V)); 173d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian return NO_ERROR; 174eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian} 175eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 176eda65400f5ae301e26c5f52287d831f063069ec2Mathias AgopianTransform::vec2 Transform::transform(const vec2& v) const { 177eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec2 r; 178eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const mat33& M(mMatrix); 179eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r[0] = M[0][0]*v[0] + M[1][0]*v[1] + M[2][0]; 180eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r[1] = M[0][1]*v[0] + M[1][1]*v[1] + M[2][1]; 181eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return r; 182edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 183edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 184eda65400f5ae301e26c5f52287d831f063069ec2Mathias AgopianTransform::vec3 Transform::transform(const vec3& v) const { 185eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec3 r; 186eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const mat33& M(mMatrix); 187eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r[0] = M[0][0]*v[0] + M[1][0]*v[1] + M[2][0]*v[2]; 188eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r[1] = M[0][1]*v[0] + M[1][1]*v[1] + M[2][1]*v[2]; 189eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r[2] = M[0][2]*v[0] + M[1][2]*v[1] + M[2][2]*v[2]; 190eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return r; 191eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian} 192eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 19378fd5010a87425d2be401d10a306dd68638fc1ddMathias Agopianvoid Transform::transform(float* point, int x, int y) const 194edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 195eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec2 v(x, y); 196eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian v = transform(v); 19778fd5010a87425d2be401d10a306dd68638fc1ddMathias Agopian point[0] = v[0]; 19878fd5010a87425d2be401d10a306dd68638fc1ddMathias Agopian point[1] = v[1]; 199edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 200edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 201edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectRect Transform::makeBounds(int w, int h) const 202edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 203eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return transform( Rect(w, h) ); 204edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 205edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 206edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectRect Transform::transform(const Rect& bounds) const 207edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 208edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Rect r; 209eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec2 lt( bounds.left, bounds.top ); 210eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec2 rt( bounds.right, bounds.top ); 211eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec2 lb( bounds.left, bounds.bottom ); 212eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian vec2 rb( bounds.right, bounds.bottom ); 213eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 214eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian lt = transform(lt); 215eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian rt = transform(rt); 216eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian lb = transform(lb); 217eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian rb = transform(rb); 218eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 219eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r.left = floorf(min(lt[0], rt[0], lb[0], rb[0]) + 0.5f); 220eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r.top = floorf(min(lt[1], rt[1], lb[1], rb[1]) + 0.5f); 221eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r.right = floorf(max(lt[0], rt[0], lb[0], rb[0]) + 0.5f); 222eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian r.bottom = floorf(max(lt[1], rt[1], lb[1], rb[1]) + 0.5f); 223eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 224edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return r; 225edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 226edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 227edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source ProjectRegion Transform::transform(const Region& reg) const 228edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 229edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project Region out; 230eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (CC_UNLIKELY(transformed())) { 231eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (CC_LIKELY(preserveRects())) { 23220f68782a4ea71c6a977d7f87d8288d3daa265ecMathias Agopian Region::const_iterator it = reg.begin(); 23320f68782a4ea71c6a977d7f87d8288d3daa265ecMathias Agopian Region::const_iterator const end = reg.end(); 23420f68782a4ea71c6a977d7f87d8288d3daa265ecMathias Agopian while (it != end) { 23520f68782a4ea71c6a977d7f87d8288d3daa265ecMathias Agopian out.orSelf(transform(*it++)); 236edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 237edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 238edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project out.set(transform(reg.bounds())); 239edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 240edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 24141b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopian int xpos = floorf(tx() + 0.5f); 24241b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopian int ypos = floorf(ty() + 0.5f); 24341b6aabf356d8a505da37b1d046bc9010028fe8bMathias Agopian out = reg.translate(xpos, ypos); 244edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 245edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project return out; 246edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 247edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 248eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianuint32_t Transform::type() const 249edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 250eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (mType & UNKNOWN_TYPE) { 251eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian // recompute what this transform is 252eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 253eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const mat33& M(mMatrix); 254eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float a = M[0][0]; 255eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float b = M[1][0]; 256eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float c = M[0][1]; 257eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float d = M[1][1]; 258eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float x = M[2][0]; 259eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const float y = M[2][1]; 260eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 261eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian bool scale = false; 262eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian uint32_t flags = ROT_0; 263eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (isZero(b) && isZero(c)) { 264d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (a<0) flags |= FLIP_H; 265d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (d<0) flags |= FLIP_V; 266d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (!absIsOne(a) || !absIsOne(d)) { 267d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian scale = true; 268eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 269eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } else if (isZero(a) && isZero(d)) { 270d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian flags |= ROT_90; 271883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian if (b>0) flags |= FLIP_V; 272883dffaa0095ac9ac2be70915f620af9f429dc4bMathias Agopian if (c<0) flags |= FLIP_H; 273d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (!absIsOne(b) || !absIsOne(c)) { 274d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian scale = true; 275eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 276eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } else { 27729a367bb7c14c916e991a6a0028727bd06c1e16eMathias Agopian // there is a skew component and/or a non 90 degrees rotation 278eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian flags = ROT_INVALID; 279eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian } 280eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 281eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType = flags << 8; 282eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (flags & ROT_INVALID) { 283eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType |= UNKNOWN; 284edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } else { 285eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if ((flags & ROT_90) || ((flags & ROT_180) == ROT_180)) 286eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType |= ROTATE; 287eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (flags & FLIP_H) 288eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType ^= SCALE; 289eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (flags & FLIP_V) 290eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType ^= SCALE; 291eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (scale) 292eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType |= SCALE; 293edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 294eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 295eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (!isZero(x) || !isZero(y)) 296eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian mType |= TRANSLATE; 297edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project } 298eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return mType; 299eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian} 300eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 301eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianuint32_t Transform::getType() const { 302eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return type() & 0xFF; 303eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian} 304eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 305eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianuint32_t Transform::getOrientation() const 306eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian{ 307eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian return (type() >> 8) & 0xFF; 308edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 309edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 310edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Projectbool Transform::preserveRects() const 311edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project{ 312ab7c13f96a3c883fb4c93749c2e6c68155d3ad95Mathias Agopian return (getOrientation() & ROT_INVALID) ? false : true; 313eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian} 314eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 315eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopianvoid Transform::dump(const char* name) const 316eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian{ 317eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian type(); // updates the type 318eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 319eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian String8 flags, type; 320eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian const mat33& m(mMatrix); 321eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian uint32_t orient = mType >> 8; 322eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 323d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (orient&ROT_INVALID) { 324eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian flags.append("ROT_INVALID "); 325d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian } else { 326d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (orient&ROT_90) { 327d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian flags.append("ROT_90 "); 328d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian } else { 329d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian flags.append("ROT_0 "); 330d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian } 331d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (orient&FLIP_V) 332d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian flags.append("FLIP_V "); 333d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (orient&FLIP_H) 334d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian flags.append("FLIP_H "); 335d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian } 336eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 337d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian if (!(mType&(SCALE|ROTATE|TRANSLATE))) 338d12965934712ed0b9c1a264a6934dc0dad839ffdMathias Agopian type.append("IDENTITY "); 339eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (mType&SCALE) 340eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian type.append("SCALE "); 341eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (mType&ROTATE) 342eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian type.append("ROTATE "); 343eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian if (mType&TRANSLATE) 344eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian type.append("TRANSLATE "); 345eda65400f5ae301e26c5f52287d831f063069ec2Mathias Agopian 3469d4536835248525f32f1504a3d28d5bbfa0a2910Steve Block ALOGD("%s 0x%08x (%s, %s)", name, mType, flags.string(), type.string()); 3479d4536835248525f32f1504a3d28d5bbfa0a2910Steve Block ALOGD("%.4f %.4f %.4f", m[0][0], m[1][0], m[2][0]); 3489d4536835248525f32f1504a3d28d5bbfa0a2910Steve Block ALOGD("%.4f %.4f %.4f", m[0][1], m[1][1], m[2][1]); 3499d4536835248525f32f1504a3d28d5bbfa0a2910Steve Block ALOGD("%.4f %.4f %.4f", m[0][2], m[1][2], m[2][2]); 350edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project} 351edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 352edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project// --------------------------------------------------------------------------- 353edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project 354edbf3b6af777b721cd2a1ef461947e51e88241e1The Android Open Source Project}; // namespace android 355