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麻烦大家帮我看一下！编译成功，可以运行，100个机器人也可以显示，拖动鼠标可以显示选择框，但是鼠标一松就完蛋了。
#include <CEGUI/CEGUI.h>
#include <OgreCEGUIRenderer.h>
#include "ExampleApplication.h"
class SelectionRectangle : public ManualObject
{
public:
SelectionRectangle(const String &name)
: ManualObject(name)
{
setUseIdentityProjection(true);
setUseIdentityView(true);
setRenderQueueGroup(RENDER_QUEUE_OVERLAY);
setQueryFlags(0);
}
/**
* Sets the corners of the SelectionRectangle. Every parameter should be in the
* range [0, 1] representing a percentage of the screen the SelectionRectangle
* should take up.
*/
void setCorners(float left, float top, float right, float bottom)
{
left = left * 2 - 1;
right = right * 2 - 1;
top = 1 - top * 2;
bottom = 1 - bottom * 2;
clear();
begin("", RenderOperation::OT_LINE_STRIP);
position(left, top, -1);
position(right, top, -1);
position(right, bottom, -1);
position(left, bottom, -1);
position(left, top, -1);
end();
AxisAlignedBox box;
box.setInfinite();
setBoundingBox(box);
}
void setCorners(const Vector2 &topLeft, const Vector2 &bottomRight)
{
setCorners(topLeft.x, topLeft.y, bottomRight.x, bottomRight.y);
}
};
class DemoListener : public ExampleFrameListener, public OIS::MouseListener
{
public:
DemoListener(RenderWindow* win, Camera* cam, SceneManager *sceneManager)
: ExampleFrameListener(win, cam, false, true), mSceneMgr(sceneManager), mSelecting(false)
{
mMouse->setEventCallback(this);
mRect = new SelectionRectangle("Selection SelectionRectangle");
mSceneMgr->getRootSceneNode()->createChildSceneNode()->attachObject(mRect);
mVolQuery = mSceneMgr->createPlaneBoundedVolumeQuery(PlaneBoundedVolumeList());
mSelecting = false;
} // DemoListener
~DemoListener()
{
mSceneMgr->destroyQuery(mVolQuery);
delete mRect;
}
/* MouseListener callbacks. */
bool mouseMoved(const OIS::MouseEvent &arg)
{
CEGUI::System::getSingleton().injectMouseMove(arg.state.X.rel, arg.state.Y.rel);
if (mSelecting)
{
CEGUI::MouseCursor *mouse = CEGUI::MouseCursor::getSingletonPtr();
mStop.x = mouse->getPosition().d_x / (float)arg.state.width;
mStop.y = mouse->getPosition().d_y / (float)arg.state.height;
mRect->setCorners(mStart, mStop);
}
return true;
}
bool mousePressed(const OIS::MouseEvent &arg, OIS::MouseButtonID id)
{
if (id == OIS::MB_Left)
{
CEGUI::MouseCursor *mouse = CEGUI::MouseCursor::getSingletonPtr();
mStart.x = mouse->getPosition().d_x / (float)arg.state.width;
mStart.y = mouse->getPosition().d_y / (float)arg.state.height;
mStop = mStart;
mSelecting = true;
mRect->clear();
mRect->setVisible(true);
}
return true;
}
bool mouseReleased(const OIS::MouseEvent &arg, OIS::MouseButtonID id)
{
if (id == OIS::MB_Left)
{
performSelection(mStart, mStop);
mSelecting = false;
mRect->setVisible(false);
}
return true;
}
void performSelection(const Vector2 &first, const Vector2 &second)
{
float left = first.x, right = second.x,
top = first.y, bottom = second.y;
if (left > right)
swap(left, right);
if (top > bottom)
swap(top, bottom);
if ((right - left) * (bottom - top) < 0.0001)
return;
// Convert screen positions into rays
Ray topLeft = mCamera->getCameraToViewportRay(left, top);
Ray topRight = mCamera->getCameraToViewportRay(right, top);
Ray bottomLeft = mCamera->getCameraToViewportRay(left, bottom);
Ray bottomRight = mCamera->getCameraToViewportRay(right, bottom);
// The plane faces the counter clockwise position.
PlaneBoundedVolume vol;
vol.planes.push_back(Plane(topLeft.getPoint(3), topRight.getPoint(3), bottomRight.getPoint(3))); // front plane
vol.planes.push_back(Plane(topLeft.getOrigin(), topLeft.getPoint(100), topRight.getPoint(100))); // top plane
vol.planes.push_back(Plane(topLeft.getOrigin(), bottomLeft.getPoint(100), topLeft.getPoint(100))); // left plane
vol.planes.push_back(Plane(topLeft.getOrigin(), bottomRight.getPoint(100), bottomLeft.getPoint(100))); // bottom plane
vol.planes.push_back(Plane(topLeft.getOrigin(), topRight.getPoint(100), bottomRight.getPoint(100))); // right plane
PlaneBoundedVolumeList volList;
volList.push_back(vol);
mVolQuery->setVolumes(volList);
SceneQueryResult result = mVolQuery->execute();
deselectObjects();
SceneQueryResultMovableList::iterator itr;
for (itr = result.movables.begin(); itr != result.movables.end(); ++itr)
selectObject(*itr);
}
void deselectObjects()
{
std::list<MovableObject*>::iterator itr;
for (itr = mSelected.begin(); itr != mSelected.end(); ++itr)
(*itr)->getParentSceneNode()->showBoundingBox(false);
}
void selectObject(MovableObject *obj)
{
obj->getParentSceneNode()->showBoundingBox(true);
mSelected.push_back(obj);
}
private:
Vector2 mStart, mStop;
SceneManager *mSceneMgr;
PlaneBoundedVolumeListSceneQuery *mVolQuery;
std::list<MovableObject*> mSelected;
SelectionRectangle *mRect;
bool mSelecting;
static void swap(float &x, float &y)
{
float tmp = x;
x = y;
y = tmp;
}
};
class DemoApplication : public ExampleApplication
{
public:
DemoApplication()
: mRenderer(0), mSystem(0)
{
}
~DemoApplication()
{
if (mSystem)
delete mSystem;
if (mRenderer)
delete mRenderer;
}
protected:
CEGUI::OgreCEGUIRenderer *mRenderer;
CEGUI::System *mSystem;
void createScene(void)
{
mRenderer = new CEGUI::OgreCEGUIRenderer(mWindow, Ogre::RENDER_QUEUE_OVERLAY, false, 3000, mSceneMgr);
mSystem = new CEGUI::System(mRenderer);
CEGUI::SchemeManager::getSingleton().loadScheme((CEGUI::utf8*)"TaharezLookSkin.scheme");
CEGUI::MouseCursor::getSingleton().setImage((CEGUI::utf8*)"TaharezLook", (CEGUI::utf8*)"MouseArrow");
mCamera->setPosition(-60, 100, -60);
mCamera->lookAt(60, 0, 60);
mSceneMgr->setAmbientLight(ColourValue::White);
for (int i = 0; i < 10; ++i)
for (int j = 0; j < 10; ++j)
{
Entity *ent = mSceneMgr->createEntity("Robot" + StringConverter::toString(i + j * 10), "robot.mesh");
SceneNode *node = mSceneMgr->getRootSceneNode()->createChildSceneNode(Vector3(i * 15, 0, j * 15));
node->attachObject(ent);
node->setScale(0.1, 0.1, 0.1);
}
}
void createFrameListener(void)
{
mFrameListener = new DemoListener(mWindow, mCamera, mSceneMgr);
mFrameListener->showDebugOverlay(true);
mRoot->addFrameListener(mFrameListener);
}
};
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
#define WIN32_LEAN_AND_MEAN
#include "windows.h"
INT WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR strCmdLine, INT)
#else
int main(int argc, char **argv)
#endif
{
// Create application object
DemoApplication app;
try {
app.go();
} catch(Exception& e) {
#if OGRE_PLATFORM == OGRE_PLATFORM_WIN32
MessageBoxA(NULL, e.getFullDescription().c_str(), "An exception has occurred!",
MB_OK | MB_ICONERROR | MB_TASKMODAL);
#else
fprintf(stderr, "An exception has occurred: %s\n",
e.getFullDescription().c_str());
#endif
}
return 0;
}
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发表于 2007-11-9 09:07:00
楼主