Mercurial > hg > orthanc-stone
view Framework/Toolbox/ViewportGeometry.h @ 270:2d64f4d39610 am-2
backup (work in progress)
author | am@osimis.io |
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date | Thu, 23 Aug 2018 14:45:04 +0200 |
parents | fccffbf99ba1 |
children | 7a364e44fbb4 |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2018 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/>. **/ #pragma once #include "../Viewport/CairoContext.h" #include "../Toolbox/Extent2D.h" namespace OrthancStone { class ViewportGeometry { private: // Extent of the scene (in world units) Extent2D sceneExtent_; // Size of the display (in pixels) unsigned int width_; unsigned int height_; // Zoom/pan double zoom_; double panX_; // In pixels (display units) double panY_; cairo_matrix_t transform_; // Scene-to-display transformation void ComputeTransform(); public: ViewportGeometry(); void SetDisplaySize(unsigned int width, unsigned int height); void SetSceneExtent(const Extent2D& extent); const Extent2D& GetSceneExtent() const { return sceneExtent_; } void MapDisplayToScene(double& sceneX /* out */, double& sceneY /* out */, double x, double y) const; void MapSceneToDisplay(int& displayX /* out */, int& displayY /* out */, double x, double y) const; unsigned int GetDisplayWidth() const { return width_; } unsigned int GetDisplayHeight() const { return height_; } double GetZoom() const { return zoom_; } void SetDefaultView(); void ApplyTransform(CairoContext& context) const; void GetPan(double& x, double& y) const; void SetPan(double x, double y); void SetZoom(double zoom); }; }