Aded extra constructors to BlendFunc and Depth to help set them up convieniently.

Added a background quad to osghud.
This commit is contained in:
Robert Osfield 2003-05-06 18:04:27 +00:00
parent 06054d9520
commit fa0333b6fe
5 changed files with 92 additions and 34 deletions

View File

@ -20,6 +20,7 @@
#include <osg/BlendFunc>
#include <osg/Depth>
#include <osg/Projection>
#include <osg/PolygonOffset>
#include <osg/MatrixTransform>
#include <osgText/Text>
@ -29,12 +30,13 @@ osg::Node* createHUD()
{
osg::Geode* geode = new osg::Geode();
std::string timesFont("fonts/times.ttf");
std::string timesFont("fonts/arial.ttf");
// turn lighting off for the text and disable depth test to ensure its always ontop.
osg::StateSet* stateset = geode->getOrCreateStateSet();
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF);
//stateset->setMode(GL_DEPTH_TEST,osg::StateAttribute::OFF);
stateset->setAttribute(new osg::Depth(osg::Depth::LESS,0.0,0.0001));
osg::Vec3 position(150.0f,800.0f,0.0f);
osg::Vec3 delta(0.0f,-120.0f,0.0f);
@ -94,7 +96,46 @@ osg::Node* createHUD()
text->setText("And add an osg::ModelViewMatrix set to ABSOLUTE to ensure\nit remains independent from any external model view matrices.");
position += delta;
}
}
{
osg::BoundingBox bb;
for(unsigned int i=0;i<geode->getNumDrawables();++i)
{
bb.expandBy(geode->getDrawable(i)->getBound());
}
osg::Geometry* geom = new osg::Geometry;
osg::Vec3Array* vertices = new osg::Vec3Array;
float depth = bb.zMin()-0.1;
vertices->push_back(osg::Vec3(bb.xMin(),bb.yMax(),depth));
vertices->push_back(osg::Vec3(bb.xMin(),bb.yMin(),depth));
vertices->push_back(osg::Vec3(bb.xMax(),bb.yMin(),depth));
vertices->push_back(osg::Vec3(bb.xMax(),bb.yMax(),depth));
geom->setVertexArray(vertices);
osg::Vec3Array* normals = new osg::Vec3Array;
normals->push_back(osg::Vec3(0.0f,0.0f,1.0f));
geom->setNormalArray(normals);
geom->setNormalBinding(osg::Geometry::BIND_OVERALL);
osg::Vec4Array* colors = new osg::Vec4Array;
colors->push_back(osg::Vec4(1.0f,1.0,0.8f,0.2f));
geom->setColorArray(colors);
geom->setColorBinding(osg::Geometry::BIND_OVERALL);
geom->addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,4));
osg::StateSet* stateset = geom->getOrCreateStateSet();
stateset->setMode(GL_BLEND,osg::StateAttribute::ON);
//stateset->setAttribute(new osg::PolygonOffset(1.0f,1.0f),osg::StateAttribute::ON);
stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
geode->addDrawable(geom);
}
// create the hud.
osg::MatrixTransform* modelview_abs = new osg::MatrixTransform;
@ -167,6 +208,16 @@ int main( int argc, char **argv )
// create the windows and run the threads.
viewer.realize();
// set all the sceneview's up so that their left and right add cull masks are set up.
for(osgProducer::OsgCameraGroup::SceneHandlerList::iterator itr=viewer.getSceneHandlerList().begin();
itr!=viewer.getSceneHandlerList().end();
++itr)
{
osgUtil::SceneView* sceneview = itr->get();
sceneview->setComputeNearFarMode(osgUtil::CullVisitor::DO_NOT_COMPUTE_NEAR_FAR);
}
while( !viewer.done() )
{
// wait for all cull and draw threads to complete.

View File

@ -25,6 +25,8 @@ class SG_EXPORT BlendFunc : public StateAttribute
BlendFunc();
BlendFunc(GLenum source, GLenum destination);
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
BlendFunc(const BlendFunc& trans,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
StateAttribute(trans,copyop),

View File

@ -25,15 +25,28 @@ class SG_EXPORT Depth : public StateAttribute
public :
Depth();
enum Function
{
NEVER = GL_NEVER,
LESS = GL_LESS,
EQUAL = GL_EQUAL,
LEQUAL = GL_LEQUAL,
GREATER = GL_GREATER,
NOTEQUAL = GL_NOTEQUAL,
GEQUAL = GL_GEQUAL,
ALWAYS = GL_ALWAYS
};
Depth(Function func=LESS,double zNear=0.0, double zFar=1.0,bool writeMask=true);
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
Depth(const Depth& dp,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
StateAttribute(dp,copyop),
_func(dp._func),
_depthWriteMask(dp._depthWriteMask),
_zNear(dp._zNear),
_zFar(dp._zFar) {}
_zFar(dp._zFar),
_depthWriteMask(dp._depthWriteMask) {}
META_StateAttribute(osg, Depth, DEPTH);
@ -59,27 +72,11 @@ class SG_EXPORT Depth : public StateAttribute
modes.push_back(GL_DEPTH_TEST);
}
enum Function
{
NEVER = GL_NEVER,
LESS = GL_LESS,
EQUAL = GL_EQUAL,
LEQUAL = GL_LEQUAL,
GREATER = GL_GREATER,
NOTEQUAL = GL_NOTEQUAL,
GEQUAL = GL_GEQUAL,
ALWAYS = GL_ALWAYS
};
inline void setFunction(Function func) { _func = func; }
inline Function getFunction() const { return _func; }
inline void setWriteMask(bool mask) { _depthWriteMask = mask; }
inline bool getWriteMask() const { return _depthWriteMask; }
inline void setRange(double zNear, double zFar)
{
_zNear = zNear;
@ -89,6 +86,11 @@ class SG_EXPORT Depth : public StateAttribute
inline double getZNear() const { return _zNear; }
inline double getZFar() const { return _zFar; }
inline void setWriteMask(bool mask) { _depthWriteMask = mask; }
inline bool getWriteMask() const { return _depthWriteMask; }
virtual void apply(State& state) const;
protected:
@ -96,11 +98,11 @@ class SG_EXPORT Depth : public StateAttribute
virtual ~Depth();
Function _func;
bool _depthWriteMask;
double _zNear;
double _zFar;
bool _depthWriteMask;
};
}

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@ -14,12 +14,17 @@
using namespace osg;
BlendFunc::BlendFunc()
BlendFunc::BlendFunc():
_source_factor(SRC_ALPHA),
_destination_factor(ONE_MINUS_SRC_ALPHA)
{
_source_factor = SRC_ALPHA;
_destination_factor = ONE_MINUS_SRC_ALPHA;
}
BlendFunc::BlendFunc(GLenum source, GLenum destination):
_source_factor(source),
_destination_factor(destination)
{
}
BlendFunc::~BlendFunc()
{

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@ -14,16 +14,14 @@
using namespace osg;
Depth::Depth()
Depth::Depth(Function func,double zNear, double zFar,bool writeMask):
_func(func),
_zNear(zNear),
_zFar(zFar),
_depthWriteMask(writeMask)
{
_func = LESS;
_depthWriteMask = true;
_zNear = 0.0;
_zFar = 1.0;
}
Depth::~Depth()
{
}
@ -31,7 +29,7 @@ Depth::~Depth()
void Depth::apply(State&) const
{
glDepthFunc((GLenum)_func);
glDepthMask((GLboolean)_depthWriteMask);
glDepthRange(_zNear,_zFar);
glDepthMask((GLboolean)_depthWriteMask);
}