Mercurial > hg > orthanc-stone
diff OrthancStone/Sources/Scene2D/Internals/CairoFloatTextureRenderer.cpp @ 1512:244ad1e4e76a
reorganization of folders
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Tue, 07 Jul 2020 16:21:02 +0200 |
parents | Framework/Scene2D/Internals/CairoFloatTextureRenderer.cpp@7ec8fea061b9 |
children | 4fb8fdf03314 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/OrthancStone/Sources/Scene2D/Internals/CairoFloatTextureRenderer.cpp Tue Jul 07 16:21:02 2020 +0200 @@ -0,0 +1,109 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2020 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "CairoFloatTextureRenderer.h" + +#include "CairoColorTextureRenderer.h" +#include "../FloatTextureSceneLayer.h" + +namespace OrthancStone +{ + namespace Internals + { + void CairoFloatTextureRenderer::Update(const ISceneLayer& layer) + { + const FloatTextureSceneLayer& l = dynamic_cast<const FloatTextureSceneLayer&>(layer); + + textureTransform_ = l.GetTransform(); + isLinearInterpolation_ = l.IsLinearInterpolation(); + + float windowCenter, windowWidth; + l.GetWindowing(windowCenter, windowWidth); + + const float a = windowCenter - windowWidth / 2.0f; + const float slope = 256.0f / windowWidth; + + const Orthanc::ImageAccessor& source = l.GetTexture(); + const unsigned int width = source.GetWidth(); + const unsigned int height = source.GetHeight(); + texture_.SetSize(width, height, false); + + Orthanc::ImageAccessor target; + texture_.GetWriteableAccessor(target); + + assert(source.GetFormat() == Orthanc::PixelFormat_Float32 && + target.GetFormat() == Orthanc::PixelFormat_BGRA32 && + sizeof(float) == 4); + + static const float LOG_NORMALIZATION = 255.0f / log(1.0f + 255.0f); + + for (unsigned int y = 0; y < height; y++) + { + const float* p = reinterpret_cast<const float*>(source.GetConstRow(y)); + uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); + + for (unsigned int x = 0; x < width; x++) + { + float v = (*p - a) * slope; + if (v <= 0) + { + v = 0; + } + else if (v >= 255) + { + v = 255; + } + + if (l.IsApplyLog()) + { + // https://theailearner.com/2019/01/01/log-transformation/ + v = LOG_NORMALIZATION * log(1.0f + static_cast<float>(v)); + } + + assert(v >= 0.0f && v <= 255.0f); + + uint8_t vv = static_cast<uint8_t>(v); + + if (l.IsInverted()) + { + vv = 255 - vv; + } + + q[0] = vv; + q[1] = vv; + q[2] = vv; + + p++; + q += 4; + } + } + } + + + void CairoFloatTextureRenderer::Render(const AffineTransform2D& transform, + unsigned int canvasWidth, + unsigned int canvasHeight) + { + CairoColorTextureRenderer::RenderColorTexture(target_, transform, texture_, + textureTransform_, isLinearInterpolation_); + } + } +}