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From Geoff Michel, fix for the scaling of the random number generation.

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This commit is contained in:
Robert Osfield 2005-11-27 15:32:57 +00:00
parent 7aeb1d646c
commit 3881a55564
1 changed files with 7 additions and 7 deletions
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12
examples/osgdelaunay/osgdelaunay.cpp
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@ -139,7 +139,7 @@ protected:
};
class LinearConstraint: public osgUtil::DelaunayConstraint {
/** forces edges of a "Images/road" to fit triangles
/** forces edges of a "road" to fit triangles
* if 2 roads cross, then the overlap will be replaced by a 'cross road'
* and the roads built up to the cross roads with a texture along its length. */
public:
@ -265,8 +265,8 @@ osg::Vec3d getpt(const int np)
int i=np/maxp;
int j=np%maxp;
// make the random scale 0.00 if you want an equispaced XY grid.
float x=3000.0/(maxp-1)*i+0.00052*rand();
float y=3000.0/(maxp-1)*j+0.0005*rand();
float x=3000.0/(maxp-1)*i+16.*(float)rand()/RAND_MAX;
float y=3000.0/(maxp-1)*j+16.*(float)rand()/RAND_MAX;
float z=getheight(x,y);
if (np>=maxp*maxp) z=-1.e32;
return osg::Vec3d(x,y,z);
@ -380,7 +380,7 @@ osg::Group *makedelaunay(const int ndcs)
osg::ref_ptr<LinearConstraint> forestroad3;
osg::ref_ptr<osgUtil::DelaunayConstraint> dc;
std::ostringstream what;
if (1==1) { // add a simple constraint of few points
if (1==0) { // add a simple constraint of few points
osg::ref_ptr<osgUtil::DelaunayConstraint> dc=new osgUtil::DelaunayConstraint;
osg::Vec3Array *bounds=new osg::Vec3Array;
unsigned int nmax=4;
@ -638,7 +638,7 @@ osg::Group *makedelaunay(const int ndcs)
dc2->setTexture("Images/purpleFlowers.png");
geode->addDrawable(dc2->makeAreal(arpts.get())); // this creates fill in geometry
if (ndcs>4) { // a simple "Images/road"
if (ndcs>4) { // a simple "road"
trig->removeInternalTriangles(dc3.get());
dc3->setTexture ("Images/road.png");
dc3->setTexrep(40,9.5); // texture is repeated at this frequency
@ -1125,7 +1125,7 @@ osg::DrawArrays* LinearConstraint::makeRoad(void ) const
}
osg::Vec3Array *LinearConstraint::getRoadNormals(const osg::Vec3Array*) const
osg::Vec3Array *LinearConstraint::getRoadNormals(const osg::Vec3Array *points) const
{
osg::Vec3Array *nrms=new osg::Vec3Array;
for(unsigned int i=0;i<_midline->size();i++) {