1 // Copyright (C) 2008 Tim Moore
2 // Copyright (C) 2011 Mathias Froehlich
4 // This program is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU General Public License as
6 // published by the Free Software Foundation; either version 2 of the
7 // License, or (at your option) any later version.
9 // This program is distributed in the hope that it will be useful, but
10 // WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with this program; if not, write to the Free Software
16 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22 #include "CameraGroup.hxx"
24 #include "fg_props.hxx"
25 #include "globals.hxx"
26 #include "renderer.hxx"
27 #include "FGEventHandler.hxx"
28 #include "WindowBuilder.hxx"
29 #include "WindowSystemAdapter.hxx"
30 #include <simgear/props/props.hxx>
31 #include <simgear/structure/OSGUtils.hxx>
32 #include <simgear/structure/OSGVersion.hxx>
33 #include <simgear/scene/material/EffectCullVisitor.hxx>
34 #include <simgear/scene/util/RenderConstants.hxx>
35 #include <simgear/scene/tgdb/userdata.hxx>
42 #include <osg/Geometry>
43 #include <osg/GraphicsContext>
44 #include <osg/io_utils>
48 #include <osg/Program>
52 #include <osg/Viewport>
54 #include <osgUtil/IntersectionVisitor>
56 #include <osgViewer/GraphicsWindow>
57 #include <osgViewer/Renderer>
60 invert(const osg::Matrix& matrix)
62 return osg::Matrix::inverse(matrix);
65 /// Returns the zoom factor of the master camera.
66 /// The reference fov is the historic 55 deg
70 double fov = fgGetDouble("/sim/current-view/field-of-view", 55);
73 return tan(55*0.5*SG_DEGREES_TO_RADIANS)/tan(fov*0.5*SG_DEGREES_TO_RADIANS);
77 preMult(const osg::Vec2d& v, const osg::Matrix& m)
79 osg::Vec3d tmp = m.preMult(osg::Vec3(v, 0));
80 return osg::Vec2d(tmp[0], tmp[1]);
84 relativeProjection(const osg::Matrix& P0, const osg::Matrix& R, const osg::Vec2d ref[2],
85 const osg::Matrix& pP, const osg::Matrix& pR, const osg::Vec2d pRef[2])
87 // Track the way from one projection space to the other:
90 // where P0 is the projection template sensible for the given window size,
91 // T is a translation matrix and S a scale matrix.
92 // We need to determine T and S so that the reference points in the parents
93 // projection space match the two reference points in this cameras projection space.
95 // Starting from the parents camera projection space, we get into this cameras
96 // projection space by the transform matrix:
97 // P*R*inv(pP*pR) = T*S*P0*R*inv(pP*pR)
98 // So, at first compute that matrix without T*S and determine S and T from that
100 // Ok, now osg uses the inverse matrix multiplication order, thus:
101 osg::Matrix PtoPwithoutTS = invert(pR*pP)*R*P0;
102 // Compute the parents reference points in the current projection space
103 // without the yet unknown T and S
104 osg::Vec2d pRefInThis[2] = {
105 preMult(pRef[0], PtoPwithoutTS),
106 preMult(pRef[1], PtoPwithoutTS)
109 // To get the same zoom, rescale to match the parents size
110 double s = (ref[0] - ref[1]).length()/(pRefInThis[0] - pRefInThis[1]).length();
111 osg::Matrix S = osg::Matrix::scale(s, s, 1);
113 // For the translation offset, incorporate the now known scale
114 // and recompute the position ot the first reference point in the
115 // currents projection space without the yet unknown T.
116 pRefInThis[0] = preMult(pRef[0], PtoPwithoutTS*S);
117 // The translation is then the difference of the reference points
118 osg::Matrix T = osg::Matrix::translate(osg::Vec3d(ref[0] - pRefInThis[0], 0));
120 // Compose and return the desired final projection matrix
131 ref_ptr<CameraGroup> CameraGroup::_defaultGroup;
133 CameraGroup::CameraGroup(osgViewer::Viewer* viewer) :
144 // Given a projection matrix, return a new one with the same frustum
145 // sides and new near / far values.
147 void makeNewProjMat(Matrixd& oldProj, double znear,
148 double zfar, Matrixd& projection)
150 projection = oldProj;
151 // Slightly inflate the near & far planes to avoid objects at the
152 // extremes being clipped out.
156 // Clamp the projection matrix z values to the range (near, far)
157 double epsilon = 1.0e-6;
158 if (fabs(projection(0,3)) < epsilon &&
159 fabs(projection(1,3)) < epsilon &&
160 fabs(projection(2,3)) < epsilon) {
161 // Projection is Orthographic
162 epsilon = -1.0/(zfar - znear); // Used as a temp variable
163 projection(2,2) = 2.0*epsilon;
164 projection(3,2) = (zfar + znear)*epsilon;
166 // Projection is Perspective
167 double trans_near = (-znear*projection(2,2) + projection(3,2)) /
168 (-znear*projection(2,3) + projection(3,3));
169 double trans_far = (-zfar*projection(2,2) + projection(3,2)) /
170 (-zfar*projection(2,3) + projection(3,3));
171 double ratio = fabs(2.0/(trans_near - trans_far));
172 double center = -0.5*(trans_near + trans_far);
174 projection.postMult(osg::Matrixd(1.0, 0.0, 0.0, 0.0,
176 0.0, 0.0, ratio, 0.0,
177 0.0, 0.0, center*ratio, 1.0));
184 void CameraInfo::updateCameras()
186 bufferSize->set( osg::Vec2f( width, height ) );
188 for (CameraMap::iterator ii = cameras.begin(); ii != cameras.end(); ++ii ) {
189 float f = ii->second.scaleFactor;
190 if ( f == 0.0f ) continue;
191 ii->second.camera->getViewport()->setViewport(x*f, y*f, width*f, height*f);
194 for (RenderBufferMap::iterator ii = buffers.begin(); ii != buffers.end(); ++ii ) {
195 float f = ii->second.scaleFactor;
196 if ( f == 0.0f ) continue;
197 osg::Texture2D* texture = ii->second.texture.get();
198 if ( texture->getTextureHeight() != height*f || texture->getTextureWidth() != width*f ) {
199 texture->setTextureSize( width*f, height*f );
200 texture->dirtyTextureObject();
205 void CameraInfo::resized(double w, double h)
207 bufferSize->set( osg::Vec2f( w, h ) );
209 for (RenderBufferMap::iterator ii = buffers.begin(); ii != buffers.end(); ++ii) {
210 float s = ii->second.scaleFactor;
211 if ( s == 0.0f ) continue;
212 ii->second.texture->setTextureSize( w * s, h * s );
213 ii->second.texture->dirtyTextureObject();
216 for (CameraMap::iterator ii = cameras.begin(); ii != cameras.end(); ++ii) {
217 RenderStageInfo& rsi = ii->second;
218 if (!rsi.resizable ||
219 rsi.camera->getRenderTargetImplementation() != osg::Camera::FRAME_BUFFER_OBJECT ||
220 rsi.scaleFactor == 0.0f )
223 Viewport* vp = rsi.camera->getViewport();
224 vp->width() = w * rsi.scaleFactor;
225 vp->height() = h * rsi.scaleFactor;
227 osgViewer::Renderer* renderer
228 = static_cast<osgViewer::Renderer*>(rsi.camera->getRenderer());
229 for (int i = 0; i < 2; ++i) {
230 osgUtil::SceneView* sceneView = renderer->getSceneView(i);
231 sceneView->getRenderStage()->setFrameBufferObject(0);
232 sceneView->getRenderStage()->setCameraRequiresSetUp(true);
233 if (sceneView->getRenderStageLeft()) {
234 sceneView->getRenderStageLeft()->setFrameBufferObject(0);
235 sceneView->getRenderStageLeft()->setCameraRequiresSetUp(true);
237 if (sceneView->getRenderStageRight()) {
238 sceneView->getRenderStageRight()->setFrameBufferObject(0);
239 sceneView->getRenderStageRight()->setCameraRequiresSetUp(true);
245 osg::Camera* CameraInfo::getCamera(CameraKind k) const
247 CameraMap::const_iterator ii = cameras.find( k );
248 if (ii == cameras.end())
250 return ii->second.camera.get();
253 osg::Texture2D* CameraInfo::getBuffer(RenderBufferInfo::Kind k) const
255 RenderBufferMap::const_iterator ii = buffers.find(k);
256 if (ii == buffers.end())
258 return ii->second.texture.get();
261 int CameraInfo::getMainSlaveIndex() const
263 return cameras.find( MAIN_CAMERA )->second.slaveIndex;
266 void CameraInfo::setMatrices(osg::Camera* c)
268 view->set( c->getViewMatrix() );
269 viewInverse->set( osg::Matrix::inverse( c->getViewMatrix() ) );
270 projInverse->set( osg::Matrix::inverse( c->getProjectionMatrix() ) );
273 void CameraGroup::update(const osg::Vec3d& position,
274 const osg::Quat& orientation)
276 const Matrix masterView(osg::Matrix::translate(-position)
277 * osg::Matrix::rotate(orientation.inverse()));
278 _viewer->getCamera()->setViewMatrix(masterView);
279 const Matrix& masterProj = _viewer->getCamera()->getProjectionMatrix();
280 double masterZoomFactor = zoomFactor();
281 for (CameraList::iterator i = _cameras.begin(); i != _cameras.end(); ++i) {
282 const CameraInfo* info = i->get();
284 Camera* camera = info->getCamera(MAIN_CAMERA);
286 const View::Slave& slave = _viewer->getSlave(info->getMainSlaveIndex());
287 #if SG_OSG_VERSION_LESS_THAN(3,0,0)
288 // refreshes camera viewports (for now)
289 info->updateCameras();
292 if (info->flags & GUI) {
293 viewMatrix = osg::Matrix(); // identifty transform on the GUI camera
294 } else if ((info->flags & VIEW_ABSOLUTE) != 0)
295 viewMatrix = slave._viewOffset;
297 viewMatrix = masterView * slave._viewOffset;
298 camera->setViewMatrix(viewMatrix);
299 Matrix projectionMatrix;
300 if (info->flags & GUI) {
301 projectionMatrix = osg::Matrix::ortho2D(0, info->width, 0, info->height);
302 } else if ((info->flags & PROJECTION_ABSOLUTE) != 0) {
303 if (info->flags & ENABLE_MASTER_ZOOM) {
304 if (info->relativeCameraParent < _cameras.size()) {
305 // template projection matrix and view matrix of the current camera
306 osg::Matrix P0 = slave._projectionOffset;
307 osg::Matrix R = viewMatrix;
309 // The already known projection and view matrix of the parent camera
310 const CameraInfo* parentInfo = _cameras[info->relativeCameraParent].get();
311 RenderStageInfo prsi = parentInfo->cameras.find(MAIN_CAMERA)->second;
312 osg::Matrix pP = prsi.camera->getProjectionMatrix();
313 osg::Matrix pR = prsi.camera->getViewMatrix();
315 // And the projection matrix derived from P0 so that the reference points match
316 projectionMatrix = relativeProjection(P0, R, info->thisReference,
317 pP, pR, info->parentReference);
320 // We want to zoom, so take the original matrix and apply the zoom to it.
321 projectionMatrix = slave._projectionOffset;
322 projectionMatrix.postMultScale(osg::Vec3d(masterZoomFactor, masterZoomFactor, 1));
325 projectionMatrix = slave._projectionOffset;
328 projectionMatrix = masterProj * slave._projectionOffset;
331 CameraMap::const_iterator ii = info->cameras.find(FAR_CAMERA);
332 if (ii == info->cameras.end() || !ii->second.camera.valid()) {
333 camera->setProjectionMatrix(projectionMatrix);
335 Camera* farCamera = ii->second.camera;
336 farCamera->setViewMatrix(viewMatrix);
337 double left, right, bottom, top, parentNear, parentFar;
338 projectionMatrix.getFrustum(left, right, bottom, top,
339 parentNear, parentFar);
340 if ((info->flags & FIXED_NEAR_FAR) == 0) {
344 if (parentFar < _nearField || _nearField == 0.0f) {
345 camera->setProjectionMatrix(projectionMatrix);
346 camera->setCullMask(camera->getCullMask()
347 | simgear::BACKGROUND_BIT);
348 camera->setClearMask(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
349 farCamera->setNodeMask(0);
351 Matrix nearProj, farProj;
352 makeNewProjMat(projectionMatrix, parentNear, _nearField,
354 makeNewProjMat(projectionMatrix, _nearField, parentFar,
356 camera->setProjectionMatrix(nearProj);
357 camera->setCullMask(camera->getCullMask()
358 & ~simgear::BACKGROUND_BIT);
359 camera->setClearMask(GL_DEPTH_BUFFER_BIT);
360 farCamera->setProjectionMatrix(farProj);
361 farCamera->setNodeMask(camera->getNodeMask());
365 bool viewDone = false;
367 bool projectionDone = false;
368 Matrix projectionMatrix;
369 for ( CameraMap::const_iterator ii = info->cameras.begin(); ii != info->cameras.end(); ++ii ) {
370 if ( ii->first == SHADOW_CAMERA ) {
371 globals->get_renderer()->updateShadowCamera(info, position);
374 if ( ii->second.fullscreen )
377 Camera* camera = ii->second.camera.get();
378 int slaveIndex = ii->second.slaveIndex;
379 const View::Slave& slave = _viewer->getSlave(slaveIndex);
382 if ((info->flags & VIEW_ABSOLUTE) != 0)
383 viewMatrix = slave._viewOffset;
385 viewMatrix = masterView * slave._viewOffset;
389 camera->setViewMatrix( viewMatrix );
391 if ( !projectionDone ) {
392 if ((info->flags & PROJECTION_ABSOLUTE) != 0) {
393 if (info->flags & ENABLE_MASTER_ZOOM) {
394 if (info->relativeCameraParent < _cameras.size()) {
395 // template projection matrix and view matrix of the current camera
396 osg::Matrix P0 = slave._projectionOffset;
397 osg::Matrix R = viewMatrix;
399 // The already known projection and view matrix of the parent camera
400 const CameraInfo* parentInfo = _cameras[info->relativeCameraParent].get();
401 RenderStageInfo prsi = parentInfo->cameras.find(MAIN_CAMERA)->second;
402 osg::Matrix pP = prsi.camera->getProjectionMatrix();
403 osg::Matrix pR = prsi.camera->getViewMatrix();
405 // And the projection matrix derived from P0 so that the reference points match
406 projectionMatrix = relativeProjection(P0, R, info->thisReference,
407 pP, pR, info->parentReference);
410 // We want to zoom, so take the original matrix and apply the zoom to it.
411 projectionMatrix = slave._projectionOffset;
412 projectionMatrix.postMultScale(osg::Vec3d(masterZoomFactor, masterZoomFactor, 1));
415 projectionMatrix = slave._projectionOffset;
418 projectionMatrix = masterProj * slave._projectionOffset;
420 projectionDone = true;
423 camera->setProjectionMatrix(projectionMatrix);
428 globals->get_renderer()->setPlanes( _zNear, _zFar );
431 void CameraGroup::setCameraParameters(float vfov, float aspectRatio)
433 if (vfov != 0.0f && aspectRatio != 0.0f)
435 ->setProjectionMatrixAsPerspective(vfov,
440 double CameraGroup::getMasterAspectRatio() const
442 if (_cameras.empty())
445 const CameraInfo* info = _cameras.front();
447 osg::Camera* camera = info->getCamera(MAIN_CAMERA);
449 camera = info->getCamera( GEOMETRY_CAMERA );
450 const osg::Viewport* viewport = camera->getViewport();
455 return static_cast<double>(viewport->height()) / viewport->width();
462 // A raw value for property nodes that references a class member via
464 template<class C, class T>
465 class RefMember : public SGRawValue<T>
468 RefMember (C *obj, T C::*ptr)
469 : _obj(obj), _ptr(ptr) {}
470 virtual ~RefMember () {}
471 virtual T getValue () const
473 return _obj.get()->*_ptr;
475 virtual bool setValue (T value)
477 _obj.get()->*_ptr = value;
480 virtual SGRawValue<T> * clone () const
482 return new RefMember(_obj.get(), _ptr);
489 template<typename C, typename T>
490 RefMember<C, T> makeRefMember(C *obj, T C::*ptr)
492 return RefMember<C, T>(obj, ptr);
495 template<typename C, typename T>
496 void bindMemberToNode(SGPropertyNode* parent, const char* childName,
497 C* obj, T C::*ptr, T value)
499 SGPropertyNode* valNode = parent->getNode(childName);
500 RefMember<C, T> refMember = makeRefMember(obj, ptr);
502 valNode = parent->getNode(childName, true);
503 valNode->tie(refMember, false);
504 setValue(valNode, value);
506 valNode->tie(refMember, true);
510 void buildViewport(flightgear::CameraInfo* info, SGPropertyNode* viewportNode,
511 const osg::GraphicsContext::Traits *traits)
513 using namespace flightgear;
514 bindMemberToNode(viewportNode, "x", info, &CameraInfo::x, 0.0);
515 bindMemberToNode(viewportNode, "y", info, &CameraInfo::y, 0.0);
516 bindMemberToNode(viewportNode, "width", info, &CameraInfo::width,
517 static_cast<double>(traits->width));
518 bindMemberToNode(viewportNode, "height", info, &CameraInfo::height,
519 static_cast<double>(traits->height));
526 // Mostly copied from osg's osgViewer/View.cpp
528 static osg::Geometry* createPanoramicSphericalDisplayDistortionMesh(
529 const Vec3& origin, const Vec3& widthVector, const Vec3& heightVector,
530 double sphere_radius, double collar_radius,
531 Image* intensityMap = 0, const Matrix& projectorMatrix = Matrix())
533 osg::Vec3d center(0.0,0.0,0.0);
534 osg::Vec3d eye(0.0,0.0,0.0);
536 double distance = sqrt(sphere_radius*sphere_radius - collar_radius*collar_radius);
538 bool texcoord_flip = false;
541 osg::Vec3d projector = eye - osg::Vec3d(0.0,0.0, distance);
543 OSG_INFO<<"createPanoramicSphericalDisplayDistortionMesh : Projector position = "<<projector<<std::endl;
544 OSG_INFO<<"createPanoramicSphericalDisplayDistortionMesh : distance = "<<distance<<std::endl;
546 // create the quad to visualize.
547 osg::Geometry* geometry = new osg::Geometry();
549 geometry->setSupportsDisplayList(false);
551 osg::Vec3 xAxis(widthVector);
552 float width = widthVector.length();
555 osg::Vec3 yAxis(heightVector);
556 float height = heightVector.length();
561 osg::Vec3Array* vertices = new osg::Vec3Array;
562 osg::Vec2Array* texcoords0 = new osg::Vec2Array;
563 osg::Vec2Array* texcoords1 = intensityMap==0 ? new osg::Vec2Array : 0;
564 osg::Vec4Array* colors = new osg::Vec4Array;
567 osg::Vec3 bottom = origin;
568 osg::Vec3 dx = xAxis*(width/((float)(noSteps-2)));
569 osg::Vec3 dy = yAxis*(height/((float)(noSteps-1)));
571 osg::Vec3 top = origin + yAxis*height;
573 osg::Vec3 screenCenter = origin + widthVector*0.5f + heightVector*0.5f;
574 float screenRadius = heightVector.length() * 0.5f;
576 geometry->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF | osg::StateAttribute::PROTECTED);
578 for(int i=0;i<noSteps;++i)
580 //osg::Vec3 cursor = bottom+dy*(float)i;
581 for(int j=0;j<noSteps;++j)
583 osg::Vec2 texcoord(double(i)/double(noSteps-1), double(j)/double(noSteps-1));
584 double theta = texcoord.x() * 2.0 * osg::PI;
585 double phi = (1.0-texcoord.y()) * osg::PI;
587 if (texcoord_flip) texcoord.y() = 1.0f - texcoord.y();
589 osg::Vec3 pos(sin(phi)*sin(theta), sin(phi)*cos(theta), cos(phi));
590 pos = pos*projectorMatrix;
592 double alpha = atan2(pos.x(), pos.y());
593 if (alpha<0.0) alpha += 2.0*osg::PI;
595 double beta = atan2(sqrt(pos.x()*pos.x() + pos.y()*pos.y()), pos.z());
596 if (beta<0.0) beta += 2.0*osg::PI;
598 double gamma = atan2(sqrt(double(pos.x()*pos.x() + pos.y()*pos.y())), double(pos.z()+distance));
599 if (gamma<0.0) gamma += 2.0*osg::PI;
602 osg::Vec3 v = screenCenter + osg::Vec3(sin(alpha)*gamma*2.0/osg::PI, -cos(alpha)*gamma*2.0/osg::PI, 0.0f)*screenRadius;
605 vertices->push_back(osg::Vec3(v.x(), top.y()-(v.y()-origin.y()),v.z()));
607 vertices->push_back(v);
609 texcoords0->push_back( texcoord );
611 osg::Vec2 texcoord1(alpha/(2.0*osg::PI), 1.0f - beta/osg::PI);
614 colors->push_back(intensityMap->getColor(texcoord1));
618 colors->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
619 if (texcoords1) texcoords1->push_back( texcoord1 );
627 // pass the created vertex array to the points geometry object.
628 geometry->setVertexArray(vertices);
630 geometry->setColorArray(colors);
631 geometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
633 geometry->setTexCoordArray(0,texcoords0);
634 if (texcoords1) geometry->setTexCoordArray(1,texcoords1);
636 osg::DrawElementsUShort* elements = new osg::DrawElementsUShort(osg::PrimitiveSet::TRIANGLES);
637 geometry->addPrimitiveSet(elements);
639 for(int i=0;i<noSteps-1;++i)
641 for(int j=0;j<noSteps-1;++j)
643 int i1 = j+(i+1)*noSteps;
644 int i2 = j+(i)*noSteps;
645 int i3 = j+1+(i)*noSteps;
646 int i4 = j+1+(i+1)*noSteps;
648 osg::Vec3& v1 = (*vertices)[i1];
649 osg::Vec3& v2 = (*vertices)[i2];
650 osg::Vec3& v3 = (*vertices)[i3];
651 osg::Vec3& v4 = (*vertices)[i4];
653 if ((v1-screenCenter).length()>screenRadius) continue;
654 if ((v2-screenCenter).length()>screenRadius) continue;
655 if ((v3-screenCenter).length()>screenRadius) continue;
656 if ((v4-screenCenter).length()>screenRadius) continue;
658 elements->push_back(i1);
659 elements->push_back(i2);
660 elements->push_back(i3);
662 elements->push_back(i1);
663 elements->push_back(i3);
664 elements->push_back(i4);
671 void CameraGroup::buildDistortionCamera(const SGPropertyNode* psNode,
674 const SGPropertyNode* texNode = psNode->getNode("texture");
679 string texName = texNode->getStringValue();
680 TextureMap::iterator itr = _textureTargets.find(texName);
681 if (itr == _textureTargets.end()) {
685 Viewport* viewport = camera->getViewport();
686 float width = viewport->width();
687 float height = viewport->height();
688 TextureRectangle* texRect = itr->second.get();
689 double radius = psNode->getDoubleValue("radius", 1.0);
690 double collar = psNode->getDoubleValue("collar", 0.45);
691 Geode* geode = new Geode();
692 geode->addDrawable(createPanoramicSphericalDisplayDistortionMesh(
693 Vec3(0.0f,0.0f,0.0f), Vec3(width,0.0f,0.0f),
694 Vec3(0.0f,height,0.0f), radius, collar));
696 // new we need to add the texture to the mesh, we do so by creating a
697 // StateSet to contain the Texture StateAttribute.
698 StateSet* stateset = geode->getOrCreateStateSet();
699 stateset->setTextureAttributeAndModes(0, texRect, StateAttribute::ON);
700 stateset->setMode(GL_LIGHTING, StateAttribute::OFF);
702 TexMat* texmat = new TexMat;
703 texmat->setScaleByTextureRectangleSize(true);
704 stateset->setTextureAttributeAndModes(0, texmat, osg::StateAttribute::ON);
706 if (!applyIntensityMapAsColours && intensityMap)
708 stateset->setTextureAttributeAndModes(1, new osg::Texture2D(intensityMap), osg::StateAttribute::ON);
711 // add subgraph to render
712 camera->addChild(geode);
713 camera->setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
714 camera->setClearColor(osg::Vec4(0.0, 0.0, 0.0, 1.0));
715 camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
716 camera->setCullingMode(osg::CullSettings::NO_CULLING);
717 camera->setName("DistortionCorrectionCamera");
720 CameraInfo* CameraGroup::buildCamera(SGPropertyNode* cameraNode)
722 WindowBuilder *wBuild = WindowBuilder::getWindowBuilder();
723 const SGPropertyNode* windowNode = cameraNode->getNode("window");
724 GraphicsWindow* window = 0;
725 int cameraFlags = DO_INTERSECTION_TEST;
727 // New style window declaration / definition
728 window = wBuild->buildWindow(windowNode);
730 // Old style: suck window params out of camera block
731 window = wBuild->buildWindow(cameraNode);
736 Camera* camera = new Camera;
737 camera->setAllowEventFocus(false);
738 camera->setGraphicsContext(window->gc.get());
739 camera->setViewport(new Viewport);
740 camera->setCullingMode(CullSettings::SMALL_FEATURE_CULLING
741 | CullSettings::VIEW_FRUSTUM_CULLING);
742 camera->setInheritanceMask(CullSettings::ALL_VARIABLES
743 & ~(CullSettings::CULL_MASK
744 | CullSettings::CULLING_MODE
745 #if defined(HAVE_CULLSETTINGS_CLEAR_MASK)
746 | CullSettings::CLEAR_MASK
751 const SGPropertyNode* viewNode = cameraNode->getNode("view");
753 double heading = viewNode->getDoubleValue("heading-deg", 0.0);
754 double pitch = viewNode->getDoubleValue("pitch-deg", 0.0);
755 double roll = viewNode->getDoubleValue("roll-deg", 0.0);
756 double x = viewNode->getDoubleValue("x", 0.0);
757 double y = viewNode->getDoubleValue("y", 0.0);
758 double z = viewNode->getDoubleValue("z", 0.0);
759 // Build a view matrix, which is the inverse of a model
760 // orientation matrix.
761 vOff = (Matrix::translate(-x, -y, -z)
762 * Matrix::rotate(-DegreesToRadians(heading),
763 Vec3d(0.0, 1.0, 0.0),
764 -DegreesToRadians(pitch),
765 Vec3d(1.0, 0.0, 0.0),
766 -DegreesToRadians(roll),
767 Vec3d(0.0, 0.0, 1.0)));
768 if (viewNode->getBoolValue("absolute", false))
769 cameraFlags |= VIEW_ABSOLUTE;
771 // Old heading parameter, works in the opposite direction
772 double heading = cameraNode->getDoubleValue("heading-deg", 0.0);
773 vOff.makeRotate(DegreesToRadians(heading), osg::Vec3(0, 1, 0));
775 // Configuring the physical dimensions of a monitor
776 SGPropertyNode* viewportNode = cameraNode->getNode("viewport", true);
777 double physicalWidth = viewportNode->getDoubleValue("width", 1024);
778 double physicalHeight = viewportNode->getDoubleValue("height", 768);
779 double bezelHeightTop = 0;
780 double bezelHeightBottom = 0;
781 double bezelWidthLeft = 0;
782 double bezelWidthRight = 0;
783 const SGPropertyNode* physicalDimensionsNode = 0;
784 if ((physicalDimensionsNode = cameraNode->getNode("physical-dimensions")) != 0) {
785 physicalWidth = physicalDimensionsNode->getDoubleValue("width", physicalWidth);
786 physicalHeight = physicalDimensionsNode->getDoubleValue("height", physicalHeight);
787 const SGPropertyNode* bezelNode = 0;
788 if ((bezelNode = physicalDimensionsNode->getNode("bezel")) != 0) {
789 bezelHeightTop = bezelNode->getDoubleValue("top", bezelHeightTop);
790 bezelHeightBottom = bezelNode->getDoubleValue("bottom", bezelHeightBottom);
791 bezelWidthLeft = bezelNode->getDoubleValue("left", bezelWidthLeft);
792 bezelWidthRight = bezelNode->getDoubleValue("right", bezelWidthRight);
796 unsigned parentCameraIndex = ~0u;
797 osg::Vec2d parentReference[2];
798 osg::Vec2d thisReference[2];
799 SGPropertyNode* projectionNode = 0;
800 if ((projectionNode = cameraNode->getNode("perspective")) != 0) {
801 double fovy = projectionNode->getDoubleValue("fovy-deg", 55.0);
802 double aspectRatio = projectionNode->getDoubleValue("aspect-ratio",
804 double zNear = projectionNode->getDoubleValue("near", 0.0);
805 double zFar = projectionNode->getDoubleValue("far", zNear + 20000);
806 double offsetX = projectionNode->getDoubleValue("offset-x", 0.0);
807 double offsetY = projectionNode->getDoubleValue("offset-y", 0.0);
808 double tan_fovy = tan(DegreesToRadians(fovy*0.5));
809 double right = tan_fovy * aspectRatio * zNear + offsetX;
810 double left = -tan_fovy * aspectRatio * zNear + offsetX;
811 double top = tan_fovy * zNear + offsetY;
812 double bottom = -tan_fovy * zNear + offsetY;
813 pOff.makeFrustum(left, right, bottom, top, zNear, zFar);
814 cameraFlags |= PROJECTION_ABSOLUTE;
815 if (projectionNode->getBoolValue("fixed-near-far", true))
816 cameraFlags |= FIXED_NEAR_FAR;
817 } else if ((projectionNode = cameraNode->getNode("frustum")) != 0
818 || (projectionNode = cameraNode->getNode("ortho")) != 0) {
819 double top = projectionNode->getDoubleValue("top", 0.0);
820 double bottom = projectionNode->getDoubleValue("bottom", 0.0);
821 double left = projectionNode->getDoubleValue("left", 0.0);
822 double right = projectionNode->getDoubleValue("right", 0.0);
823 double zNear = projectionNode->getDoubleValue("near", 0.0);
824 double zFar = projectionNode->getDoubleValue("far", zNear + 20000);
825 if (cameraNode->getNode("frustum")) {
826 pOff.makeFrustum(left, right, bottom, top, zNear, zFar);
827 cameraFlags |= PROJECTION_ABSOLUTE;
829 pOff.makeOrtho(left, right, bottom, top, zNear, zFar);
830 cameraFlags |= (PROJECTION_ABSOLUTE | ORTHO);
832 if (projectionNode->getBoolValue("fixed-near-far", true))
833 cameraFlags |= FIXED_NEAR_FAR;
834 } else if ((projectionNode = cameraNode->getNode("master-perspective")) != 0) {
835 double zNear = projectionNode->getDoubleValue("eye-distance", 0.4*physicalWidth);
836 double xoff = projectionNode->getDoubleValue("x-offset", 0);
837 double yoff = projectionNode->getDoubleValue("y-offset", 0);
838 double left = -0.5*physicalWidth - xoff;
839 double right = 0.5*physicalWidth - xoff;
840 double bottom = -0.5*physicalHeight - yoff;
841 double top = 0.5*physicalHeight - yoff;
842 pOff.makeFrustum(left, right, bottom, top, zNear, zNear*1000);
843 cameraFlags |= PROJECTION_ABSOLUTE | ENABLE_MASTER_ZOOM;
844 } else if ((projectionNode = cameraNode->getNode("right-of-perspective"))
845 || (projectionNode = cameraNode->getNode("left-of-perspective"))
846 || (projectionNode = cameraNode->getNode("above-perspective"))
847 || (projectionNode = cameraNode->getNode("below-perspective"))
848 || (projectionNode = cameraNode->getNode("reference-points-perspective"))) {
849 std::string name = projectionNode->getStringValue("parent-camera");
850 for (unsigned i = 0; i < _cameras.size(); ++i) {
851 if (_cameras[i]->name != name)
853 parentCameraIndex = i;
855 if (_cameras.size() <= parentCameraIndex) {
856 SG_LOG(SG_VIEW, SG_ALERT, "CameraGroup::buildCamera: "
857 "failed to find parent camera for relative camera!");
860 const CameraInfo* parentInfo = _cameras[parentCameraIndex].get();
861 if (projectionNode->getNameString() == "right-of-perspective") {
862 double tmp = (parentInfo->physicalWidth + 2*parentInfo->bezelWidthRight)/parentInfo->physicalWidth;
863 parentReference[0] = osg::Vec2d(tmp, -1);
864 parentReference[1] = osg::Vec2d(tmp, 1);
865 tmp = (physicalWidth + 2*bezelWidthLeft)/physicalWidth;
866 thisReference[0] = osg::Vec2d(-tmp, -1);
867 thisReference[1] = osg::Vec2d(-tmp, 1);
868 } else if (projectionNode->getNameString() == "left-of-perspective") {
869 double tmp = (parentInfo->physicalWidth + 2*parentInfo->bezelWidthLeft)/parentInfo->physicalWidth;
870 parentReference[0] = osg::Vec2d(-tmp, -1);
871 parentReference[1] = osg::Vec2d(-tmp, 1);
872 tmp = (physicalWidth + 2*bezelWidthRight)/physicalWidth;
873 thisReference[0] = osg::Vec2d(tmp, -1);
874 thisReference[1] = osg::Vec2d(tmp, 1);
875 } else if (projectionNode->getNameString() == "above-perspective") {
876 double tmp = (parentInfo->physicalHeight + 2*parentInfo->bezelHeightTop)/parentInfo->physicalHeight;
877 parentReference[0] = osg::Vec2d(-1, tmp);
878 parentReference[1] = osg::Vec2d(1, tmp);
879 tmp = (physicalHeight + 2*bezelHeightBottom)/physicalHeight;
880 thisReference[0] = osg::Vec2d(-1, -tmp);
881 thisReference[1] = osg::Vec2d(1, -tmp);
882 } else if (projectionNode->getNameString() == "below-perspective") {
883 double tmp = (parentInfo->physicalHeight + 2*parentInfo->bezelHeightBottom)/parentInfo->physicalHeight;
884 parentReference[0] = osg::Vec2d(-1, -tmp);
885 parentReference[1] = osg::Vec2d(1, -tmp);
886 tmp = (physicalHeight + 2*bezelHeightTop)/physicalHeight;
887 thisReference[0] = osg::Vec2d(-1, tmp);
888 thisReference[1] = osg::Vec2d(1, tmp);
889 } else if (projectionNode->getNameString() == "reference-points-perspective") {
890 SGPropertyNode* parentNode = projectionNode->getNode("parent", true);
891 SGPropertyNode* thisNode = projectionNode->getNode("this", true);
892 SGPropertyNode* pointNode;
894 pointNode = parentNode->getNode("point", 0, true);
895 parentReference[0][0] = pointNode->getDoubleValue("x", 0)*2/parentInfo->physicalWidth;
896 parentReference[0][1] = pointNode->getDoubleValue("y", 0)*2/parentInfo->physicalHeight;
897 pointNode = parentNode->getNode("point", 1, true);
898 parentReference[1][0] = pointNode->getDoubleValue("x", 0)*2/parentInfo->physicalWidth;
899 parentReference[1][1] = pointNode->getDoubleValue("y", 0)*2/parentInfo->physicalHeight;
901 pointNode = thisNode->getNode("point", 0, true);
902 thisReference[0][0] = pointNode->getDoubleValue("x", 0)*2/physicalWidth;
903 thisReference[0][1] = pointNode->getDoubleValue("y", 0)*2/physicalHeight;
904 pointNode = thisNode->getNode("point", 1, true);
905 thisReference[1][0] = pointNode->getDoubleValue("x", 0)*2/physicalWidth;
906 thisReference[1][1] = pointNode->getDoubleValue("y", 0)*2/physicalHeight;
909 pOff = osg::Matrix::perspective(45, physicalWidth/physicalHeight, 1, 20000);
910 cameraFlags |= PROJECTION_ABSOLUTE | ENABLE_MASTER_ZOOM;
912 // old style shear parameters
913 double shearx = cameraNode->getDoubleValue("shear-x", 0);
914 double sheary = cameraNode->getDoubleValue("shear-y", 0);
915 pOff.makeTranslate(-shearx, -sheary, 0);
917 const SGPropertyNode* textureNode = cameraNode->getNode("texture");
919 string texName = textureNode->getStringValue("name");
920 int tex_width = textureNode->getIntValue("width");
921 int tex_height = textureNode->getIntValue("height");
922 TextureRectangle* texture = new TextureRectangle;
924 texture->setTextureSize(tex_width, tex_height);
925 texture->setInternalFormat(GL_RGB);
926 texture->setFilter(Texture::MIN_FILTER, Texture::LINEAR);
927 texture->setFilter(Texture::MAG_FILTER, Texture::LINEAR);
928 texture->setWrap(Texture::WRAP_S, Texture::CLAMP_TO_EDGE);
929 texture->setWrap(Texture::WRAP_T, Texture::CLAMP_TO_EDGE);
930 camera->setDrawBuffer(GL_FRONT);
931 camera->setReadBuffer(GL_FRONT);
932 camera->setRenderTargetImplementation(Camera::FRAME_BUFFER_OBJECT);
933 camera->attach(Camera::COLOR_BUFFER, texture);
934 _textureTargets[texName] = texture;
936 camera->setDrawBuffer(GL_BACK);
937 camera->setReadBuffer(GL_BACK);
939 const SGPropertyNode* psNode = cameraNode->getNode("panoramic-spherical");
940 bool useMasterSceneGraph = !psNode;
941 CameraInfo* info = globals->get_renderer()->buildRenderingPipeline(this, cameraFlags, camera, vOff, pOff,
942 window->gc.get(), useMasterSceneGraph);
943 info->name = cameraNode->getStringValue("name");
944 info->physicalWidth = physicalWidth;
945 info->physicalHeight = physicalHeight;
946 info->bezelHeightTop = bezelHeightTop;
947 info->bezelHeightBottom = bezelHeightBottom;
948 info->bezelWidthLeft = bezelWidthLeft;
949 info->bezelWidthRight = bezelWidthRight;
950 info->relativeCameraParent = parentCameraIndex;
951 info->parentReference[0] = parentReference[0];
952 info->parentReference[1] = parentReference[1];
953 info->thisReference[0] = thisReference[0];
954 info->thisReference[1] = thisReference[1];
955 // If a viewport isn't set on the camera, then it's hard to dig it
956 // out of the SceneView objects in the viewer, and the coordinates
957 // of mouse events are somewhat bizzare.
958 buildViewport(info, viewportNode, window->gc->getTraits());
959 info->updateCameras();
960 // Distortion camera needs the viewport which is created by addCamera().
962 info->flags = info->flags | VIEW_ABSOLUTE;
963 buildDistortionCamera(psNode, camera);
968 CameraInfo* CameraGroup::buildGUICamera(SGPropertyNode* cameraNode,
969 GraphicsWindow* window)
971 WindowBuilder *wBuild = WindowBuilder::getWindowBuilder();
972 const SGPropertyNode* windowNode = (cameraNode
973 ? cameraNode->getNode("window")
975 if (!window && windowNode) {
976 // New style window declaration / definition
977 window = wBuild->buildWindow(windowNode);
980 if (!window) { // buildWindow can fail
981 SG_LOG(SG_VIEW, SG_WARN, "CameraGroup::buildGUICamera: failed to build a window");
985 Camera* camera = new Camera;
986 camera->setName( "GUICamera" );
987 camera->setAllowEventFocus(false);
988 camera->setGraphicsContext(window->gc.get());
989 camera->setViewport(new Viewport);
990 camera->setClearMask(0);
991 camera->setInheritanceMask(CullSettings::ALL_VARIABLES
992 & ~(CullSettings::COMPUTE_NEAR_FAR_MODE
993 | CullSettings::CULLING_MODE
994 #if defined(HAVE_CULLSETTINGS_CLEAR_MASK)
995 | CullSettings::CLEAR_MASK
998 camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
999 camera->setCullingMode(osg::CullSettings::NO_CULLING);
1000 camera->setProjectionResizePolicy(Camera::FIXED);
1001 camera->setReferenceFrame(Transform::ABSOLUTE_RF);
1002 const int cameraFlags = GUI | DO_INTERSECTION_TEST;
1004 CameraInfo* result = new CameraInfo(cameraFlags);
1005 // The camera group will always update the camera
1006 camera->setReferenceFrame(Transform::ABSOLUTE_RF);
1008 getViewer()->addSlave(camera, Matrixd::identity(), Matrixd::identity(), false);
1009 //installCullVisitor(camera);
1010 int slaveIndex = getViewer()->getNumSlaves() - 1;
1011 result->addCamera( MAIN_CAMERA, camera, slaveIndex );
1012 camera->setRenderOrder(Camera::POST_RENDER, slaveIndex);
1015 // XXX Camera needs to be drawn last; eventually the render order
1016 // should be assigned by a camera manager.
1017 camera->setRenderOrder(osg::Camera::POST_RENDER, 10000);
1018 SGPropertyNode* viewportNode = cameraNode->getNode("viewport", true);
1019 buildViewport(result, viewportNode, window->gc->getTraits());
1021 // Disable statistics for the GUI camera.
1022 camera->setStats(0);
1023 result->updateCameras();
1027 CameraGroup* CameraGroup::buildCameraGroup(osgViewer::Viewer* viewer,
1028 SGPropertyNode* gnode)
1030 sgUserDataInit( globals->get_props() );
1032 CameraGroup* cgroup = new CameraGroup(viewer);
1033 for (int i = 0; i < gnode->nChildren(); ++i) {
1034 SGPropertyNode* pNode = gnode->getChild(i);
1035 const char* name = pNode->getName();
1036 if (!strcmp(name, "camera")) {
1037 cgroup->buildCamera(pNode);
1038 } else if (!strcmp(name, "window")) {
1039 WindowBuilder::getWindowBuilder()->buildWindow(pNode);
1040 } else if (!strcmp(name, "gui")) {
1041 cgroup->buildGUICamera(pNode);
1044 bindMemberToNode(gnode, "znear", cgroup, &CameraGroup::_zNear, .1f);
1045 bindMemberToNode(gnode, "zfar", cgroup, &CameraGroup::_zFar, 120000.0f);
1046 bindMemberToNode(gnode, "near-field", cgroup, &CameraGroup::_nearField,
1051 void CameraGroup::setCameraCullMasks(Node::NodeMask nm)
1053 for (CameraIterator i = camerasBegin(), e = camerasEnd(); i != e; ++i) {
1054 CameraInfo* info = i->get();
1055 if (info->flags & GUI)
1057 osg::ref_ptr<osg::Camera> farCamera = info->getCamera(FAR_CAMERA);
1058 osg::Camera* camera = info->getCamera( MAIN_CAMERA );
1059 if (camera == 0) continue;
1060 if (farCamera.valid() && farCamera->getNodeMask() != 0) {
1061 camera->setCullMask(nm & ~simgear::BACKGROUND_BIT);
1062 camera->setCullMaskLeft(nm & ~simgear::BACKGROUND_BIT);
1063 camera->setCullMaskRight(nm & ~simgear::BACKGROUND_BIT);
1064 farCamera->setCullMask(nm);
1065 farCamera->setCullMaskLeft(nm);
1066 farCamera->setCullMaskRight(nm);
1068 camera->setCullMask(nm);
1069 camera->setCullMaskLeft(nm);
1070 camera->setCullMaskRight(nm);
1075 void CameraGroup::resized()
1077 for (CameraIterator i = camerasBegin(), e = camerasEnd(); i != e; ++i) {
1078 CameraInfo *info = i->get();
1079 Camera* camera = info->getCamera( MAIN_CAMERA );
1081 camera = info->getCamera( DISPLAY_CAMERA );
1082 const Viewport* viewport = camera->getViewport();
1083 info->x = viewport->x();
1084 info->y = viewport->y();
1085 info->width = viewport->width();
1086 info->height = viewport->height();
1088 info->resized( info->width, info->height );
1092 const CameraInfo* CameraGroup::getGUICamera() const
1094 ConstCameraIterator result
1095 = std::find_if(camerasBegin(), camerasEnd(),
1096 FlagTester<CameraInfo>(GUI));
1097 if (result == camerasEnd()) {
1104 Camera* getGUICamera(CameraGroup* cgroup)
1106 const CameraInfo* info = cgroup->getGUICamera();
1111 return info->getCamera(MAIN_CAMERA);
1114 static bool computeCameraIntersection(const CameraInfo* cinfo,
1115 const osgGA::GUIEventAdapter* ea,
1116 osgUtil::LineSegmentIntersector::Intersections& intersections)
1118 using osgUtil::Intersector;
1119 using osgUtil::LineSegmentIntersector;
1121 eventToWindowCoords(ea, x, y);
1123 if (!(cinfo->flags & CameraGroup::DO_INTERSECTION_TEST))
1126 const Camera* camera = cinfo->getCamera(MAIN_CAMERA);
1128 camera = cinfo->getCamera( GEOMETRY_CAMERA );
1129 if (camera->getGraphicsContext() != ea->getGraphicsContext())
1132 const Viewport* viewport = camera->getViewport();
1133 double epsilon = 0.5;
1134 if (!(x >= viewport->x() - epsilon
1135 && x < viewport->x() + viewport->width() -1.0 + epsilon
1136 && y >= viewport->y() - epsilon
1137 && y < viewport->y() + viewport->height() -1.0 + epsilon))
1140 Vec4d start(x, y, 0.0, 1.0);
1141 Vec4d end(x, y, 1.0, 1.0);
1142 Matrix windowMat = viewport->computeWindowMatrix();
1143 Matrix startPtMat = Matrix::inverse(camera->getProjectionMatrix()
1146 const Camera* farCamera = cinfo->getCamera( FAR_CAMERA );
1147 if (!farCamera || farCamera->getNodeMask() == 0)
1148 endPtMat = startPtMat;
1150 endPtMat = Matrix::inverse(farCamera->getProjectionMatrix()
1152 start = start * startPtMat;
1154 end = end * endPtMat;
1156 ref_ptr<LineSegmentIntersector> picker
1157 = new LineSegmentIntersector(Intersector::VIEW,
1158 Vec3d(start.x(), start.y(), start.z()),
1159 Vec3d(end.x(), end.y(), end.z()));
1160 osgUtil::IntersectionVisitor iv(picker.get());
1161 const_cast<Camera*>(camera)->accept(iv);
1162 if (picker->containsIntersections()) {
1163 intersections = picker->getIntersections();
1170 bool computeIntersections(const CameraGroup* cgroup,
1171 const osgGA::GUIEventAdapter* ea,
1172 osgUtil::LineSegmentIntersector::Intersections& intersections)
1174 // test the GUI first
1175 const CameraInfo* guiCamera = cgroup->getGUICamera();
1176 if (guiCamera && computeCameraIntersection(guiCamera, ea, intersections))
1179 // Find camera that contains event
1180 for (CameraGroup::ConstCameraIterator iter = cgroup->camerasBegin(),
1181 e = cgroup->camerasEnd();
1184 const CameraInfo* cinfo = iter->get();
1185 if (cinfo == guiCamera)
1188 if (computeCameraIntersection(cinfo, ea, intersections))
1192 intersections.clear();
1196 void warpGUIPointer(CameraGroup* cgroup, int x, int y)
1198 using osgViewer::GraphicsWindow;
1199 Camera* guiCamera = getGUICamera(cgroup);
1202 Viewport* vport = guiCamera->getViewport();
1204 = dynamic_cast<GraphicsWindow*>(guiCamera->getGraphicsContext());
1207 globals->get_renderer()->getEventHandler()->setMouseWarped();
1208 // Translate the warp request into the viewport of the GUI camera,
1209 // send the request to the window, then transform the coordinates
1210 // for the Viewer's event queue.
1211 double wx = x + vport->x();
1212 double wyUp = vport->height() + vport->y() - y;
1214 const GraphicsContext::Traits* traits = gw->getTraits();
1215 if (gw->getEventQueue()->getCurrentEventState()->getMouseYOrientation()
1216 == osgGA::GUIEventAdapter::Y_INCREASING_DOWNWARDS) {
1217 wy = traits->height - wyUp;
1221 gw->getEventQueue()->mouseWarped(wx, wy);
1222 gw->requestWarpPointer(wx, wy);
1223 osgGA::GUIEventAdapter* eventState
1224 = cgroup->getViewer()->getEventQueue()->getCurrentEventState();
1226 = (eventState->getXmin()
1227 + ((wx / double(traits->width))
1228 * (eventState->getXmax() - eventState->getXmin())));
1230 = (eventState->getYmin()
1231 + ((wyUp / double(traits->height))
1232 * (eventState->getYmax() - eventState->getYmin())));
1233 cgroup->getViewer()->getEventQueue()->mouseWarped(viewerX, viewerY);