// Copyright (C) 2008 Tim Moore
+// Copyright (C) 2011 Mathias Froehlich
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
#include "CameraGroup.hxx"
+#include "fg_props.hxx"
#include "globals.hxx"
#include "renderer.hxx"
#include "FGEventHandler.hxx"
#include <osgViewer/GraphicsWindow>
#include <osgViewer/Renderer>
+static osg::Matrix
+invert(const osg::Matrix& matrix)
+{
+ return osg::Matrix::inverse(matrix);
+}
+
+/// Returns the zoom factor of the master camera.
+/// The reference fov is the historic 55 deg
+static double
+zoomFactor()
+{
+ double fov = fgGetDouble("/sim/current-view/field-of-view", 55);
+ if (fov < 1)
+ fov = 1;
+ return tan(55*0.5*SG_DEGREES_TO_RADIANS)/tan(fov*0.5*SG_DEGREES_TO_RADIANS);
+}
+
+static osg::Vec2d
+preMult(const osg::Vec2d& v, const osg::Matrix& m)
+{
+ osg::Vec3d tmp = m.preMult(osg::Vec3(v, 0));
+ return osg::Vec2d(tmp[0], tmp[1]);
+}
+
+static osg::Matrix
+relativeProjection(const osg::Matrix& P0, const osg::Matrix& R, const osg::Vec2d ref[2],
+ const osg::Matrix& pP, const osg::Matrix& pR, const osg::Vec2d pRef[2])
+{
+ // Track the way from one projection space to the other:
+ // We want
+ // P = T*S*P0
+ // where P0 is the projection template sensible for the given window size,
+ // T is a translation matrix and S a scale matrix.
+ // We need to determine T and S so that the reference points in the parents
+ // projection space match the two reference points in this cameras projection space.
+
+ // Starting from the parents camera projection space, we get into this cameras
+ // projection space by the transform matrix:
+ // P*R*inv(pP*pR) = T*S*P0*R*inv(pP*pR)
+ // So, at first compute that matrix without T*S and determine S and T from that
+
+ // Ok, now osg uses the inverse matrix multiplication order, thus:
+ osg::Matrix PtoPwithoutTS = invert(pR*pP)*R*P0;
+ // Compute the parents reference points in the current projection space
+ // without the yet unknown T and S
+ osg::Vec2d pRefInThis[2] = {
+ preMult(pRef[0], PtoPwithoutTS),
+ preMult(pRef[1], PtoPwithoutTS)
+ };
+
+ // To get the same zoom, rescale to match the parents size
+ double s = (ref[0] - ref[1]).length()/(pRefInThis[0] - pRefInThis[1]).length();
+ osg::Matrix S = osg::Matrix::scale(s, s, 1);
+
+ // For the translation offset, incorporate the now known scale
+ // and recompute the position ot the first reference point in the
+ // currents projection space without the yet unknown T.
+ pRefInThis[0] = preMult(pRef[0], PtoPwithoutTS*S);
+ // The translation is then the difference of the reference points
+ osg::Matrix T = osg::Matrix::translate(osg::Vec3d(ref[0] - pRefInThis[0], 0));
+
+ // Compose and return the desired final projection matrix
+ return P0*S*T;
+}
+
namespace flightgear
{
using namespace osg;
= static_cast<osgViewer::Renderer*>(camera->getRenderer());
for (int i = 0; i < 2; ++i) {
osgUtil::SceneView* sceneView = renderer->getSceneView(i);
+#if SG_OSG_VERSION_LESS_THAN(3,0,0)
+ sceneView->setCullVisitor(new simgear::EffectCullVisitor);
+#else
+ osg::ref_ptr<osgUtil::CullVisitor::Identifier> identifier;
+ identifier = sceneView->getCullVisitor()->getIdentifier();
sceneView->setCullVisitor(new simgear::EffectCullVisitor);
+ sceneView->getCullVisitor()->setIdentifier(identifier.get());
+
+ identifier = sceneView->getCullVisitorLeft()->getIdentifier();
+ sceneView->setCullVisitorLeft(sceneView->getCullVisitor()->clone());
+ sceneView->getCullVisitorLeft()->setIdentifier(identifier.get());
+
+ identifier = sceneView->getCullVisitorRight()->getIdentifier();
+ sceneView->setCullVisitorRight(sceneView->getCullVisitor()->clone());
+ sceneView->getCullVisitorRight()->setIdentifier(identifier.get());
+#endif
}
}
}
* osg::Matrix::rotate(orientation.inverse()));
_viewer->getCamera()->setViewMatrix(masterView);
const Matrix& masterProj = _viewer->getCamera()->getProjectionMatrix();
+ double masterZoomFactor = zoomFactor();
for (CameraList::iterator i = _cameras.begin(); i != _cameras.end(); ++i) {
const CameraInfo* info = i->get();
const View::Slave& slave = _viewer->getSlave(info->slaveIndex);
viewMatrix = masterView * slave._viewOffset;
camera->setViewMatrix(viewMatrix);
Matrix projectionMatrix;
- if ((info->flags & PROJECTION_ABSOLUTE) != 0)
- projectionMatrix = slave._projectionOffset;
- else
+ if ((info->flags & PROJECTION_ABSOLUTE) != 0) {
+ if (info->flags & ENABLE_MASTER_ZOOM) {
+ if (info->relativeCameraParent < _cameras.size()) {
+ // template projection matrix and view matrix of the current camera
+ osg::Matrix P0 = slave._projectionOffset;
+ osg::Matrix R = viewMatrix;
+
+ // The already known projection and view matrix of the parent camera
+ const CameraInfo* parentInfo = _cameras[info->relativeCameraParent].get();
+ osg::Matrix pP = parentInfo->camera->getProjectionMatrix();
+ osg::Matrix pR = parentInfo->camera->getViewMatrix();
+
+ // And the projection matrix derived from P0 so that the reference points match
+ projectionMatrix = relativeProjection(P0, R, info->thisReference,
+ pP, pR, info->parentReference);
+
+ } else {
+ // We want to zoom, so take the original matrix and apply the zoom to it.
+ projectionMatrix = slave._projectionOffset;
+ projectionMatrix.postMultScale(osg::Vec3d(masterZoomFactor, masterZoomFactor, 1));
+ }
+ } else {
+ projectionMatrix = slave._projectionOffset;
+ }
+ } else {
projectionMatrix = masterProj * slave._projectionOffset;
+ }
if (!info->farCamera.valid()) {
camera->setProjectionMatrix(projectionMatrix);
double left, right, bottom, top, parentNear, parentFar;
projectionMatrix.getFrustum(left, right, bottom, top,
parentNear, parentFar);
+ if ((info->flags & FIXED_NEAR_FAR) == 0) {
+ parentNear = _zNear;
+ parentFar = _zFar;
+ }
if (parentFar < _nearField || _nearField == 0.0f) {
camera->setProjectionMatrix(projectionMatrix);
camera->setCullMask(camera->getCullMask()
1.0f / aspectRatio,
_zNear, _zFar);
}
+
+double CameraGroup::getMasterAspectRatio() const
+{
+ if (_cameras.empty())
+ return 0.0;
+
+ const CameraInfo* info = _cameras.front();
+
+ const osg::Viewport* viewport = info->camera->getViewport();
+ if (!viewport) {
+ return 0.0;
+ }
+
+ return static_cast<double>(viewport->height()) / viewport->width();
+}
+
}
namespace
#endif
));
- osg::Matrix pOff;
osg::Matrix vOff;
const SGPropertyNode* viewNode = cameraNode->getNode("view");
if (viewNode) {
double heading = cameraNode->getDoubleValue("heading-deg", 0.0);
vOff.makeRotate(DegreesToRadians(heading), osg::Vec3(0, 1, 0));
}
- const SGPropertyNode* projectionNode = 0;
+ // Configuring the physical dimensions of a monitor
+ SGPropertyNode* viewportNode = cameraNode->getNode("viewport", true);
+ double physicalWidth = viewportNode->getDoubleValue("width", 1024);
+ double physicalHeight = viewportNode->getDoubleValue("height", 768);
+ double bezelHeightTop = 0;
+ double bezelHeightBottom = 0;
+ double bezelWidthLeft = 0;
+ double bezelWidthRight = 0;
+ const SGPropertyNode* physicalDimensionsNode = 0;
+ if ((physicalDimensionsNode = cameraNode->getNode("physical-dimensions")) != 0) {
+ physicalWidth = physicalDimensionsNode->getDoubleValue("width", physicalWidth);
+ physicalHeight = physicalDimensionsNode->getDoubleValue("height", physicalHeight);
+ const SGPropertyNode* bezelNode = 0;
+ if ((bezelNode = physicalDimensionsNode->getNode("bezel")) != 0) {
+ bezelHeightTop = bezelNode->getDoubleValue("top", bezelHeightTop);
+ bezelHeightBottom = bezelNode->getDoubleValue("bottom", bezelHeightBottom);
+ bezelWidthLeft = bezelNode->getDoubleValue("left", bezelWidthLeft);
+ bezelWidthRight = bezelNode->getDoubleValue("right", bezelWidthRight);
+ }
+ }
+ osg::Matrix pOff;
+ unsigned parentCameraIndex = ~0u;
+ osg::Vec2d parentReference[2];
+ osg::Vec2d thisReference[2];
+ SGPropertyNode* projectionNode = 0;
if ((projectionNode = cameraNode->getNode("perspective")) != 0) {
double fovy = projectionNode->getDoubleValue("fovy-deg", 55.0);
double aspectRatio = projectionNode->getDoubleValue("aspect-ratio",
1.0);
double zNear = projectionNode->getDoubleValue("near", 0.0);
- double zFar = projectionNode->getDoubleValue("far", 0.0);
+ double zFar = projectionNode->getDoubleValue("far", zNear + 20000);
double offsetX = projectionNode->getDoubleValue("offset-x", 0.0);
double offsetY = projectionNode->getDoubleValue("offset-y", 0.0);
double tan_fovy = tan(DegreesToRadians(fovy*0.5));
double bottom = -tan_fovy * zNear + offsetY;
pOff.makeFrustum(left, right, bottom, top, zNear, zFar);
cameraFlags |= PROJECTION_ABSOLUTE;
+ if (projectionNode->getBoolValue("fixed-near-far", true))
+ cameraFlags |= FIXED_NEAR_FAR;
} else if ((projectionNode = cameraNode->getNode("frustum")) != 0
|| (projectionNode = cameraNode->getNode("ortho")) != 0) {
double top = projectionNode->getDoubleValue("top", 0.0);
double left = projectionNode->getDoubleValue("left", 0.0);
double right = projectionNode->getDoubleValue("right", 0.0);
double zNear = projectionNode->getDoubleValue("near", 0.0);
- double zFar = projectionNode->getDoubleValue("far", 0.0);
+ double zFar = projectionNode->getDoubleValue("far", zNear + 20000);
if (cameraNode->getNode("frustum")) {
pOff.makeFrustum(left, right, bottom, top, zNear, zFar);
cameraFlags |= PROJECTION_ABSOLUTE;
pOff.makeOrtho(left, right, bottom, top, zNear, zFar);
cameraFlags |= (PROJECTION_ABSOLUTE | ORTHO);
}
+ if (projectionNode->getBoolValue("fixed-near-far", true))
+ cameraFlags |= FIXED_NEAR_FAR;
+ } else if ((projectionNode = cameraNode->getNode("master-perspective")) != 0) {
+ double zNear = projectionNode->getDoubleValue("eye-distance", 0.4*physicalWidth);
+ double xoff = projectionNode->getDoubleValue("x-offset", 0);
+ double yoff = projectionNode->getDoubleValue("y-offset", 0);
+ double left = -0.5*physicalWidth - xoff;
+ double right = 0.5*physicalWidth - xoff;
+ double bottom = -0.5*physicalHeight - yoff;
+ double top = 0.5*physicalHeight - yoff;
+ pOff.makeFrustum(left, right, bottom, top, zNear, zNear*1000);
+ cameraFlags |= PROJECTION_ABSOLUTE | ENABLE_MASTER_ZOOM;
+ } else if ((projectionNode = cameraNode->getNode("right-of-perspective"))
+ || (projectionNode = cameraNode->getNode("left-of-perspective"))
+ || (projectionNode = cameraNode->getNode("above-perspective"))
+ || (projectionNode = cameraNode->getNode("below-perspective"))
+ || (projectionNode = cameraNode->getNode("reference-points-perspective"))) {
+ std::string name = projectionNode->getStringValue("parent-camera");
+ for (unsigned i = 0; i < _cameras.size(); ++i) {
+ if (_cameras[i]->name != name)
+ continue;
+ parentCameraIndex = i;
+ }
+ if (_cameras.size() <= parentCameraIndex) {
+ SG_LOG(SG_GENERAL, SG_ALERT, "CameraGroup::buildCamera: "
+ "failed to find parent camera for relative camera!");
+ return 0;
+ }
+ const CameraInfo* parentInfo = _cameras[parentCameraIndex].get();
+ if (projectionNode->getNameString() == "right-of-perspective") {
+ double tmp = (parentInfo->physicalWidth + 2*parentInfo->bezelWidthRight)/parentInfo->physicalWidth;
+ parentReference[0] = osg::Vec2d(tmp, -1);
+ parentReference[1] = osg::Vec2d(tmp, 1);
+ tmp = (physicalWidth + 2*bezelWidthLeft)/physicalWidth;
+ thisReference[0] = osg::Vec2d(-tmp, -1);
+ thisReference[1] = osg::Vec2d(-tmp, 1);
+ } else if (projectionNode->getNameString() == "left-of-perspective") {
+ double tmp = (parentInfo->physicalWidth + 2*parentInfo->bezelWidthLeft)/parentInfo->physicalWidth;
+ parentReference[0] = osg::Vec2d(-tmp, -1);
+ parentReference[1] = osg::Vec2d(-tmp, 1);
+ tmp = (physicalWidth + 2*bezelWidthRight)/physicalWidth;
+ thisReference[0] = osg::Vec2d(tmp, -1);
+ thisReference[1] = osg::Vec2d(tmp, 1);
+ } else if (projectionNode->getNameString() == "above-perspective") {
+ double tmp = (parentInfo->physicalHeight + 2*parentInfo->bezelHeightTop)/parentInfo->physicalHeight;
+ parentReference[0] = osg::Vec2d(-1, tmp);
+ parentReference[1] = osg::Vec2d(1, tmp);
+ tmp = (physicalHeight + 2*bezelHeightBottom)/physicalHeight;
+ thisReference[0] = osg::Vec2d(-1, -tmp);
+ thisReference[1] = osg::Vec2d(1, -tmp);
+ } else if (projectionNode->getNameString() == "below-perspective") {
+ double tmp = (parentInfo->physicalHeight + 2*parentInfo->bezelHeightBottom)/parentInfo->physicalHeight;
+ parentReference[0] = osg::Vec2d(-1, -tmp);
+ parentReference[1] = osg::Vec2d(1, -tmp);
+ tmp = (physicalHeight + 2*bezelHeightTop)/physicalHeight;
+ thisReference[0] = osg::Vec2d(-1, tmp);
+ thisReference[1] = osg::Vec2d(1, tmp);
+ } else if (projectionNode->getNameString() == "reference-points-perspective") {
+ SGPropertyNode* parentNode = projectionNode->getNode("parent", true);
+ SGPropertyNode* thisNode = projectionNode->getNode("this", true);
+ SGPropertyNode* pointNode;
+
+ pointNode = parentNode->getNode("point", 0, true);
+ parentReference[0][0] = pointNode->getDoubleValue("x", 0)*2/parentInfo->physicalWidth;
+ parentReference[0][1] = pointNode->getDoubleValue("y", 0)*2/parentInfo->physicalHeight;
+ pointNode = parentNode->getNode("point", 1, true);
+ parentReference[1][0] = pointNode->getDoubleValue("x", 0)*2/parentInfo->physicalWidth;
+ parentReference[1][1] = pointNode->getDoubleValue("y", 0)*2/parentInfo->physicalHeight;
+
+ pointNode = thisNode->getNode("point", 0, true);
+ thisReference[0][0] = pointNode->getDoubleValue("x", 0)*2/physicalWidth;
+ thisReference[0][1] = pointNode->getDoubleValue("y", 0)*2/physicalHeight;
+ pointNode = thisNode->getNode("point", 1, true);
+ thisReference[1][0] = pointNode->getDoubleValue("x", 0)*2/physicalWidth;
+ thisReference[1][1] = pointNode->getDoubleValue("y", 0)*2/physicalHeight;
+ }
+
+ pOff = osg::Matrix::perspective(45, physicalWidth/physicalHeight, 1, 20000);
+ cameraFlags |= PROJECTION_ABSOLUTE | ENABLE_MASTER_ZOOM;
} else {
// old style shear parameters
double shearx = cameraNode->getDoubleValue("shear-x", 0);
bool useMasterSceneGraph = !psNode;
CameraInfo* info = addCamera(cameraFlags, camera, vOff, pOff,
useMasterSceneGraph);
+ info->name = cameraNode->getStringValue("name");
+ info->physicalWidth = physicalWidth;
+ info->physicalHeight = physicalHeight;
+ info->bezelHeightTop = bezelHeightTop;
+ info->bezelHeightBottom = bezelHeightBottom;
+ info->bezelWidthLeft = bezelWidthLeft;
+ info->bezelWidthRight = bezelWidthRight;
+ info->relativeCameraParent = parentCameraIndex;
+ info->parentReference[0] = parentReference[0];
+ info->parentReference[1] = parentReference[1];
+ info->thisReference[0] = thisReference[0];
+ info->thisReference[1] = thisReference[1];
// If a viewport isn't set on the camera, then it's hard to dig it
// out of the SceneView objects in the viewer, and the coordinates
// of mouse events are somewhat bizzare.
- SGPropertyNode* viewportNode = cameraNode->getNode("viewport", true);
buildViewport(info, viewportNode, window->gc->getTraits());
updateCameras(info);
// Distortion camera needs the viewport which is created by addCamera().
// New style window declaration / definition
window = wBuild->buildWindow(windowNode);
}
-
+
if (!window) { // buildWindow can fail
SG_LOG(SG_GENERAL, SG_WARN, "CameraGroup::buildGUICamera: failed to build a window");
return NULL;
}
-
+
Camera* camera = new Camera;
camera->setAllowEventFocus(false);
camera->setGraphicsContext(window->gc.get());
= dynamic_cast<GraphicsWindow*>(guiCamera->getGraphicsContext());
if (!gw)
return;
- globals->get_renderer()->getEventHandler()->setMouseWarped();
+ globals->get_renderer()->getEventHandler()->setMouseWarped();
// Translate the warp request into the viewport of the GUI camera,
// send the request to the window, then transform the coordinates
// for the Viewer's event queue.
projects / flightgear.git / blobdiff