SUMO - Simulation of Urban MObility
GUIPerspectiveChanger.cpp
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00001 /****************************************************************************/
00009 // A class that allows to steer the visual output in dependence to user
00010 /****************************************************************************/
00011 // SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
00012 // Copyright (C) 2001-2012 DLR (http://www.dlr.de/) and contributors
00013 /****************************************************************************/
00014 //
00015 //   This file is part of SUMO.
00016 //   SUMO is free software: you can redistribute it and/or modify
00017 //   it under the terms of the GNU General Public License as published by
00018 //   the Free Software Foundation, either version 3 of the License, or
00019 //   (at your option) any later version.
00020 //
00021 /****************************************************************************/
00022 
00023 
00024 // ===========================================================================
00025 // included modules
00026 // ===========================================================================
00027 #ifdef _MSC_VER
00028 #include <windows_config.h>
00029 #else
00030 #include <config.h>
00031 #endif
00032 
00033 #include "GUISUMOAbstractView.h"
00034 #include "GUIPerspectiveChanger.h"
00035 
00036 #ifdef CHECK_MEMORY_LEAKS
00037 #include <foreign/nvwa/debug_new.h>
00038 #endif // CHECK_MEMORY_LEAKS
00039 
00040 
00041 // ===========================================================================
00042 // method definitions
00043 // ===========================================================================
00044 GUIPerspectiveChanger::GUIPerspectiveChanger(
00045     GUISUMOAbstractView& callBack,
00046     const Boundary& viewPort) :
00047     myCallback(callBack),
00048     myViewPort(viewPort) {}
00049 
00050 
00051 GUIPerspectiveChanger::~GUIPerspectiveChanger() {}
00052 
00053 
00054 void
00055 GUIPerspectiveChanger::onLeftBtnPress(void*) {}
00056 
00057 
00058 bool
00059 GUIPerspectiveChanger::onLeftBtnRelease(void*) {
00060     return false;
00061 }
00062 
00063 
00064 void
00065 GUIPerspectiveChanger::onRightBtnPress(void*) {}
00066 
00067 
00068 bool
00069 GUIPerspectiveChanger::onRightBtnRelease(void*) {
00070     return false;
00071 }
00072 
00073 
00074 void
00075 GUIPerspectiveChanger::onMouseWheel(void*) {}
00076 
00077 
00078 void
00079 GUIPerspectiveChanger::onMouseMove(void*) {}
00080 
00081 
00082 FXint
00083 GUIPerspectiveChanger::getMouseXPosition() const {
00084     return myMouseXPosition;
00085 }
00086 
00087 
00088 FXint
00089 GUIPerspectiveChanger::getMouseYPosition() const {
00090     return myMouseYPosition;
00091 }
00092 
00093 
00094 Boundary
00095 GUIPerspectiveChanger::patchedViewPort() {
00096     // avoid division by zero
00097     if (myCallback.getHeight() == 0 ||
00098             myCallback.getWidth() == 0 ||
00099             myViewPort.getHeight() == 0 ||
00100             myViewPort.getWidth() == 0) {
00101         return myViewPort;
00102     }
00103     Boundary result = myViewPort;
00104     SUMOReal canvasRatio = (SUMOReal)myCallback.getWidth() / myCallback.getHeight();
00105     SUMOReal ratio = result.getWidth() / result.getHeight();
00106     if (ratio < canvasRatio) {
00107         result.growWidth(result.getWidth() * (canvasRatio / ratio - 1) / 2);
00108     } else {
00109         result.growHeight(result.getHeight() * (ratio / canvasRatio - 1) / 2);
00110     }
00111     return result;
00112 }
00113 
00114 /****************************************************************************/
00115 
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