1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #define LOG_NDEBUG 0 17 18 #define LOG_TAG "ImageTestHandler" 19 #include <utils/Log.h> 20 #include <utils/Timers.h> 21 #include <cmath> 22 23 #include "vec2.h" 24 #include "vec3.h" 25 #include "imagetesthandler.h" 26 27 void ImageTestHandler::initDebugImage() { 28 mDebugOutput = NULL; 29 } 30 31 // Initializes the debug image with a given height and width. 32 void ImageTestHandler::initDebugImage(int debugHeight, 33 int debugWidth) { 34 mDebugOutput = NULL; 35 mDebugOutput = new unsigned char[debugHeight * debugWidth * 4]; 36 memset(mDebugOutput, 0, debugHeight * debugWidth * 4); 37 38 mDebugHeight = debugHeight; 39 mDebugWidth = debugWidth; 40 } 41 42 // Copies an existing image to the debug image. 43 void ImageTestHandler::copyDebugImage(int inputHeight, int inputWidth, 44 const unsigned char* inputImage) { 45 if ((inputHeight == mDebugHeight) && (inputWidth == mDebugWidth)) { 46 ALOGV("Copying debug images"); 47 memcpy(mDebugOutput, inputImage, mDebugHeight * mDebugWidth * 4); 48 } 49 } 50 51 void ImageTestHandler::clearDebugImage() { 52 if (mDebugOutput != NULL) { 53 delete[] mDebugOutput; 54 mDebugOutput = new unsigned char[mDebugHeight * mDebugWidth * 4]; 55 memset(mDebugOutput, 0, mDebugHeight * mDebugWidth * 4); 56 } 57 } 58 59 60 // Draws a point of a given color. 61 void ImageTestHandler::drawPoint(int row, int column, const Vec3i &color) { 62 if ((row >= 0) && (column >= 0) && 63 (column < mDebugWidth) && (row < mDebugHeight)) { 64 mDebugOutput[(row*mDebugWidth + column) * 4] = color.r(); 65 mDebugOutput[(row*mDebugWidth + column) * 4+1] = color.g(); 66 mDebugOutput[(row*mDebugWidth + column) * 4+2] = color.b(); 67 mDebugOutput[(row*mDebugWidth + column) * 4+3] = 255; 68 } 69 } 70 71 // Draws a point in Vec2 format of a given color. 72 void ImageTestHandler::drawPoint(const Vec2i &point, const Vec3i &color) { 73 drawPoint((int) point.y(), (int) point.x(), color); 74 } 75 76 // Draws a line of a given color. 77 void ImageTestHandler::drawLine(int angle, int radius, const Vec3i &color) { 78 const int r = color.r(); 79 const int g = color.g(); 80 const int b = color.b(); 81 const int a = 255; 82 83 int shiftedMin = -113; 84 int shiftedMax = 83; 85 86 float radiusDouble = static_cast<float>(radius); 87 88 float angleRad = static_cast<float>(angle) * M_PI / 180.0; 89 90 //ALOGV("draw line for (%d, %d)", angle, radius); 91 for (int i = shiftedMin; i <= shiftedMax; ++i) { 92 float j; 93 94 assert(angle != 0); 95 j = (i - radiusDouble / sin(angleRad)) * tan(angleRad); 96 float x = (static_cast<float>(i) + j) / sqrt(2.0); 97 float y = (j - static_cast<float>(i)) / sqrt(2.0); 98 99 drawPoint(x, y, color); 100 } 101 } 102
