Mercurial > hg > orthanc-stone
view Samples/Sdl/BasicScene.cpp @ 702:c0a5eb9a4290 refactor-viewport-controller
Merge from default
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Sun, 19 May 2019 16:29:50 +0200 |
parents | 059e1fd05fd6 |
children | ef07304d4423 |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2019 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/>. **/ // From Stone #include "../../Applications/Sdl/SdlOpenGLWindow.h" #include "../../Framework/Scene2D/CairoCompositor.h" #include "../../Framework/Scene2D/ColorTextureSceneLayer.h" #include "../../Framework/Scene2D/OpenGLCompositor.h" #include "../../Framework/Scene2D/PanSceneTracker.h" #include "../../Framework/Scene2D/RotateSceneTracker.h" #include "../../Framework/Scene2D/Scene2D.h" #include "../../Framework/Scene2D/ZoomSceneTracker.h" #include "../../Framework/Scene2DViewport/ViewportController.h" #include "../../Framework/StoneInitialization.h" #include "../../Framework/Messages/MessageBroker.h" // From Orthanc framework #include <Core/Logging.h> #include <Core/OrthancException.h> #include <Core/Images/Image.h> #include <Core/Images/ImageProcessing.h> #include <Core/Images/PngWriter.h> #include <SDL.h> #include <stdio.h> static const unsigned int FONT_SIZE = 32; static const int LAYER_POSITION = 150; using namespace OrthancStone; void PrepareScene(ViewportControllerPtr controller) { Scene2D& scene(*controller->GetScene()); // Texture of 2x2 size { Orthanc::Image i(Orthanc::PixelFormat_RGB24, 2, 2, false); uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); p[0] = 255; p[1] = 0; p[2] = 0; p[3] = 0; p[4] = 255; p[5] = 0; p = reinterpret_cast<uint8_t*>(i.GetRow(1)); p[0] = 0; p[1] = 0; p[2] = 255; p[3] = 255; p[4] = 0; p[5] = 0; scene.SetLayer(12, new ColorTextureSceneLayer(i)); std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); l->SetOrigin(-3, 2); l->SetPixelSpacing(1.5, 1); l->SetAngle(20.0 / 180.0 * M_PI); scene.SetLayer(14, l.release()); } // Texture of 1x1 size { Orthanc::Image i(Orthanc::PixelFormat_RGB24, 1, 1, false); uint8_t *p = reinterpret_cast<uint8_t*>(i.GetRow(0)); p[0] = 255; p[1] = 0; p[2] = 0; std::auto_ptr<ColorTextureSceneLayer> l(new ColorTextureSceneLayer(i)); l->SetOrigin(-2, 1); l->SetAngle(20.0 / 180.0 * M_PI); scene.SetLayer(13, l.release()); } // Some lines { std::auto_ptr<PolylineSceneLayer> layer(new PolylineSceneLayer); layer->SetThickness(1); PolylineSceneLayer::Chain chain; chain.push_back(ScenePoint2D(0 - 0.5, 0 - 0.5)); chain.push_back(ScenePoint2D(0 - 0.5, 2 - 0.5)); chain.push_back(ScenePoint2D(2 - 0.5, 2 - 0.5)); chain.push_back(ScenePoint2D(2 - 0.5, 0 - 0.5)); layer->AddChain(chain, true); chain.clear(); chain.push_back(ScenePoint2D(-5, -5)); chain.push_back(ScenePoint2D(5, -5)); chain.push_back(ScenePoint2D(5, 5)); chain.push_back(ScenePoint2D(-5, 5)); layer->AddChain(chain, true); double dy = 1.01; chain.clear(); chain.push_back(ScenePoint2D(-4, -4)); chain.push_back(ScenePoint2D(4, -4 + dy)); chain.push_back(ScenePoint2D(-4, -4 + 2.0 * dy)); chain.push_back(ScenePoint2D(4, 2)); layer->AddChain(chain, false); layer->SetColor(0,255, 255); scene.SetLayer(50, layer.release()); } // Some text { std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); layer->SetText("Hello"); scene.SetLayer(100, layer.release()); } } void TakeScreenshot(const std::string& target, const Scene2D& scene, unsigned int canvasWidth, unsigned int canvasHeight) { // Take a screenshot, then save it as PNG file CairoCompositor compositor(scene, canvasWidth, canvasHeight); compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); compositor.Refresh(); Orthanc::ImageAccessor canvas; compositor.GetCanvas().GetReadOnlyAccessor(canvas); Orthanc::Image png(Orthanc::PixelFormat_RGB24, canvas.GetWidth(), canvas.GetHeight(), false); Orthanc::ImageProcessing::Convert(png, canvas); Orthanc::PngWriter writer; writer.WriteToFile(target, png); } void HandleApplicationEvent(ViewportControllerPtr controller, const OpenGLCompositor& compositor, const SDL_Event& event, FlexiblePointerTrackerPtr& activeTracker) { Scene2D& scene(*controller->GetScene()); if (event.type == SDL_MOUSEMOTION) { int scancodeCount = 0; const uint8_t* keyboardState = SDL_GetKeyboardState(&scancodeCount); if (activeTracker.get() == NULL && SDL_SCANCODE_LCTRL < scancodeCount && keyboardState[SDL_SCANCODE_LCTRL]) { // The "left-ctrl" key is down, while no tracker is present PointerEvent e; e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); ScenePoint2D p = e.GetMainPosition().Apply(scene.GetCanvasToSceneTransform()); char buf[64]; sprintf(buf, "(%0.02f,%0.02f)", p.GetX(), p.GetY()); if (scene.HasLayer(LAYER_POSITION)) { TextSceneLayer& layer = dynamic_cast<TextSceneLayer&>(scene.GetLayer(LAYER_POSITION)); layer.SetText(buf); layer.SetPosition(p.GetX(), p.GetY()); } else { std::auto_ptr<TextSceneLayer> layer(new TextSceneLayer); layer->SetColor(0, 255, 0); layer->SetText(buf); layer->SetBorder(20); layer->SetAnchor(BitmapAnchor_BottomCenter); layer->SetPosition(p.GetX(), p.GetY()); scene.SetLayer(LAYER_POSITION, layer.release()); } } else { scene.DeleteLayer(LAYER_POSITION); } } else if (event.type == SDL_MOUSEBUTTONDOWN) { PointerEvent e; e.AddPosition(compositor.GetPixelCenterCoordinates(event.button.x, event.button.y)); switch (event.button.button) { case SDL_BUTTON_MIDDLE: activeTracker.reset(new PanSceneTracker( controller, e)); break; case SDL_BUTTON_RIGHT: activeTracker.reset(new ZoomSceneTracker( controller, e, compositor.GetCanvasHeight())); break; case SDL_BUTTON_LEFT: activeTracker.reset(new RotateSceneTracker( controller, e)); break; default: break; } } else if (event.type == SDL_KEYDOWN && event.key.repeat == 0 /* Ignore key bounce */) { switch (event.key.keysym.sym) { case SDLK_s: scene.FitContent(compositor.GetCanvasWidth(), compositor.GetCanvasHeight()); break; case SDLK_c: TakeScreenshot("screenshot.png", scene, compositor.GetCanvasWidth(), compositor.GetCanvasHeight()); break; default: break; } } } static void GLAPIENTRY OpenGLMessageCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam ) { if (severity != GL_DEBUG_SEVERITY_NOTIFICATION) { fprintf(stderr, "GL CALLBACK: %s type = 0x%x, severity = 0x%x, message = %s\n", ( type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : "" ), type, severity, message ); } } void Run(ViewportControllerPtr controller) { SdlOpenGLWindow window("Hello", 1024, 768); controller->GetScene()->FitContent( window.GetCanvasWidth(), window.GetCanvasHeight()); glEnable(GL_DEBUG_OUTPUT); glDebugMessageCallback(OpenGLMessageCallback, 0); OpenGLCompositor compositor(window, *controller->GetScene()); compositor.SetFont(0, Orthanc::EmbeddedResources::UBUNTU_FONT, FONT_SIZE, Orthanc::Encoding_Latin1); FlexiblePointerTrackerPtr tracker; bool stop = false; while (!stop) { compositor.Refresh(); SDL_Event event; while (!stop && SDL_PollEvent(&event)) { if (event.type == SDL_QUIT) { stop = true; break; } else if (event.type == SDL_MOUSEMOTION) { if (tracker) { PointerEvent e; e.AddPosition(compositor.GetPixelCenterCoordinates( event.button.x, event.button.y)); tracker->PointerMove(e); } } else if (event.type == SDL_MOUSEBUTTONUP) { if (tracker) { PointerEvent e; e.AddPosition(compositor.GetPixelCenterCoordinates( event.button.x, event.button.y)); tracker->PointerUp(e); if(!tracker->IsAlive()) tracker = NULL; } } else if (event.type == SDL_WINDOWEVENT && event.window.event == SDL_WINDOWEVENT_SIZE_CHANGED) { tracker = NULL; compositor.UpdateSize(); } else if (event.type == SDL_KEYDOWN && event.key.repeat == 0 /* Ignore key bounce */) { switch (event.key.keysym.sym) { case SDLK_f: window.GetWindow().ToggleMaximize(); break; case SDLK_q: stop = true; break; default: break; } } HandleApplicationEvent(controller, compositor, event, tracker); } SDL_Delay(1); } } /** * IMPORTANT: The full arguments to "main()" are needed for SDL on * Windows. Otherwise, one gets the linking error "undefined reference * to `SDL_main'". https://wiki.libsdl.org/FAQWindows **/ int main(int argc, char* argv[]) { StoneInitialize(); Orthanc::Logging::EnableInfoLevel(true); try { MessageBroker broker; ViewportControllerPtr controller( new ViewportController(broker)); PrepareScene(controller); Run(controller); } catch (Orthanc::OrthancException& e) { LOG(ERROR) << "EXCEPTION: " << e.What(); } StoneFinalize(); return 0; }