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obj.cxx: Some kind of polygon offset for GL_POINTS.
This commit is contained in:
frohlich 2006-12-27 10:33:37 +00:00
parent 11b16b8a86
commit 7fe56bea86
1 changed files with 70 additions and 4 deletions
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74
simgear/scene/tgdb/obj.cxx
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@ -32,11 +32,13 @@
#include STL_STRING
#include <osg/StateSet>
#include <osg/Depth>
#include <osg/Geode>
#include <osg/Geometry>
#include <osg/Group>
#include <osg/LOD>
#include <osg/MatrixTransform>
#include <osg/StateSet>
#include <simgear/bucket/newbucket.hxx>
#include <simgear/io/sg_binobj.hxx>
@ -45,6 +47,7 @@
#include <simgear/misc/texcoord.hxx>
#include <simgear/scene/material/mat.hxx>
#include <simgear/scene/material/matlib.hxx>
#include <simgear/scene/util/SGUpdateVisitor.hxx>
#include <simgear/scene/tgdb/leaf.hxx>
#include <simgear/scene/tgdb/pt_lights.hxx>
#include <simgear/scene/tgdb/userdata.hxx>
@ -310,6 +313,50 @@ gen_random_surface_objects (osg::Node *leaf,
}
// Ok, somehow polygon offset for lights ...
// Could never make the polygon offset for our lights get right.
// So, why not in this way ...
class SGLightOffsetTransform : public osg::Transform {
public:
#define SCALE_FACTOR 0.94
virtual bool computeLocalToWorldMatrix(osg::Matrix& matrix,
osg::NodeVisitor* nv) const
{
if (nv && nv->getVisitorType() == osg::NodeVisitor::CULL_VISITOR) {
double scaleFactor = SCALE_FACTOR;
osg::Vec3 center = nv->getEyePoint();
osg::Matrix transform;
transform(0,0) = scaleFactor;
transform(1,1) = scaleFactor;
transform(2,2) = scaleFactor;
transform(3,0) = center[0]*(1 - scaleFactor);
transform(3,1) = center[1]*(1 - scaleFactor);
transform(3,2) = center[2]*(1 - scaleFactor);
matrix.preMult(transform);
}
return true;
}
virtual bool computeWorldToLocalMatrix(osg::Matrix& matrix,
osg::NodeVisitor* nv) const
{
if (nv && nv->getVisitorType() == osg::NodeVisitor::CULL_VISITOR) {
double scaleFactor = 1/SCALE_FACTOR;
osg::Vec3 center = nv->getEyePoint();
osg::Matrix transform;
transform(0,0) = scaleFactor;
transform(1,1) = scaleFactor;
transform(2,2) = scaleFactor;
transform(3,0) = center[0]*(1 - scaleFactor);
transform(3,1) = center[1]*(1 - scaleFactor);
transform(3,2) = center[2]*(1 - scaleFactor);
matrix.preMult(transform);
}
return true;
}
#undef SCALE_FACTOR
};
////////////////////////////////////////////////////////////////////////
// Scenery loaders.
@ -322,9 +369,9 @@ bool SGBinObjLoad( const string& path, const bool is_base,
SGMaterialLib *matlib,
bool use_random_objects,
osg::Group *geometry,
osg::Group *vasi_lights,
osg::Group *rwy_lights,
osg::Group *taxi_lights,
osg::Group *_vasi_lights,
osg::Group *_rwy_lights,
osg::Group *_taxi_lights,
osg::Vec3Array *ground_lights )
{
SGBinObject obj;
@ -333,6 +380,25 @@ bool SGBinObjLoad( const string& path, const bool is_base,
return false;
}
// Ok, somehow polygon offset for lights ...
// Could never make the polygon offset for our lights get right.
// So, why not in this way ...
SGLightOffsetTransform* vasi_lights = 0;
if (_vasi_lights) {
vasi_lights = new SGLightOffsetTransform;
_vasi_lights->addChild(vasi_lights);
}
SGLightOffsetTransform *rwy_lights = 0;
if (_rwy_lights) {
rwy_lights = new SGLightOffsetTransform;
_rwy_lights->addChild(rwy_lights);
}
SGLightOffsetTransform *taxi_lights = 0;
if (_taxi_lights) {
taxi_lights = new SGLightOffsetTransform;
_taxi_lights->addChild(taxi_lights);
}
osg::Group *local_terrain = new osg::Group;
local_terrain->setName( "LocalTerrain" );
geometry->addChild( local_terrain );