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annotate OrthancStone/Sources/Scene2D/Internals/CairoLookupTableTextureRenderer.cpp @ 1810:b05d5f0d014f

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 20 May 2021 19:11:44 +0200
parents 9ac2a65d4172
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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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23 #include "CairoLookupTableTextureRenderer.h"
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25 #include "CairoColorTextureRenderer.h"
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26 #include "../LookupTableTextureSceneLayer.h"
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28 #include <OrthancException.h>
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30 namespace OrthancStone
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31 {
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32 namespace Internals
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33 {
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34 void CairoLookupTableTextureRenderer::Update(const ISceneLayer& layer)
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35 {
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36 const LookupTableTextureSceneLayer& l = dynamic_cast<const LookupTableTextureSceneLayer&>(layer);
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38 textureTransform_ = l.GetTransform();
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39 isLinearInterpolation_ = l.IsLinearInterpolation();
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41 const Orthanc::ImageAccessor& source = l.GetTexture();
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42 const unsigned int width = source.GetWidth();
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43 const unsigned int height = source.GetHeight();
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44 texture_.SetSize(width, height, true /* alpha channel is enabled */);
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46 Orthanc::ImageAccessor target;
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47 texture_.GetWriteableAccessor(target);
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48 l.Render(target);
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50 cairo_surface_mark_dirty(texture_.GetObject());
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51 }
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53 void CairoLookupTableTextureRenderer::Render(const AffineTransform2D& transform,
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54 unsigned int canvasWidth,
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55 unsigned int canvasHeight)
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56 {
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57 CairoColorTextureRenderer::RenderColorTexture(target_, transform, texture_,
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58 textureTransform_, isLinearInterpolation_);
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59 }
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60 }
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61 }