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Added -1, -2 and -3 model creation options to osgshadow example.

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This commit is contained in:
Robert Osfield
2007-02-19 16:45:42 +00:00
parent bdfc9de345
commit b348f4a815
1 changed files with 404 additions and 164 deletions
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568
examples/osgshadow/osgshadow.cpp
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@@ -1,6 +1,8 @@
#include <osg/ArgumentParser>
#include <osg/ComputeBoundsVisitor>
#include <osg/Texture2D>
#include <osg/ShapeDrawable>
#include <osg/MatrixTransform>
#include <osgGA/TrackballManipulator>
#include <osgGA/FlightManipulator>
@@ -25,195 +27,433 @@
#include <iostream>
enum Faces
// for the grid data..
#include "../osghangglide/terrain_coords.h"
const int RecievesShadowTraversalMask = 0x1;
const int CastsShadowTraversalMask = 0x2;
namespace ModelOne
{
FRONT_FACE = 1,
BACK_FACE = 2,
LEFT_FACE = 4,
RIGHT_FACE = 8,
TOP_FACE = 16,
BOTTOM_FACE = 32
};
osg::Node* createCube(unsigned int mask)
{
osg::Geode* geode = new osg::Geode;
osg::Geometry* geometry = new osg::Geometry;
geode->addDrawable(geometry);
osg::Vec3Array* vertices = new osg::Vec3Array;
geometry->setVertexArray(vertices);
osg::Vec3Array* normals = new osg::Vec3Array;
geometry->setNormalArray(normals);
geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
osg::Vec4Array* colours = new osg::Vec4Array;
geometry->setColorArray(colours);
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
colours->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
osg::Vec3 origin(0.0f,0.0f,0.0f);
osg::Vec3 dx(2.0f,0.0f,0.0f);
osg::Vec3 dy(0.0f,1.0f,0.0f);
osg::Vec3 dz(0.0f,0.0f,1.0f);
osg::Vec3 px(1.0f,0.0,0.0f);
osg::Vec3 nx(-1.0f,0.0,0.0f);
osg::Vec3 py(0.0f,1.0f,0.0f);
osg::Vec3 ny(0.0f,-1.0f,0.0f);
osg::Vec3 pz(0.0f,0.0f,1.0f);
osg::Vec3 nz(0.0f,0.0f,-1.0f);
if (mask & FRONT_FACE)
enum Faces
{
// front face
vertices->push_back(origin);
vertices->push_back(origin+dx);
vertices->push_back(origin+dx+dz);
vertices->push_back(origin+dz);
normals->push_back(ny);
normals->push_back(ny);
normals->push_back(ny);
normals->push_back(ny);
FRONT_FACE = 1,
BACK_FACE = 2,
LEFT_FACE = 4,
RIGHT_FACE = 8,
TOP_FACE = 16,
BOTTOM_FACE = 32
};
osg::Node* createCube(unsigned int mask)
{
osg::Geode* geode = new osg::Geode;
osg::Geometry* geometry = new osg::Geometry;
geode->addDrawable(geometry);
osg::Vec3Array* vertices = new osg::Vec3Array;
geometry->setVertexArray(vertices);
osg::Vec3Array* normals = new osg::Vec3Array;
geometry->setNormalArray(normals);
geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
osg::Vec4Array* colours = new osg::Vec4Array;
geometry->setColorArray(colours);
geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
colours->push_back(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
osg::Vec3 origin(0.0f,0.0f,0.0f);
osg::Vec3 dx(2.0f,0.0f,0.0f);
osg::Vec3 dy(0.0f,1.0f,0.0f);
osg::Vec3 dz(0.0f,0.0f,1.0f);
osg::Vec3 px(1.0f,0.0,0.0f);
osg::Vec3 nx(-1.0f,0.0,0.0f);
osg::Vec3 py(0.0f,1.0f,0.0f);
osg::Vec3 ny(0.0f,-1.0f,0.0f);
osg::Vec3 pz(0.0f,0.0f,1.0f);
osg::Vec3 nz(0.0f,0.0f,-1.0f);
if (mask & FRONT_FACE)
{
// front face
vertices->push_back(origin);
vertices->push_back(origin+dx);
vertices->push_back(origin+dx+dz);
vertices->push_back(origin+dz);
normals->push_back(ny);
normals->push_back(ny);
normals->push_back(ny);
normals->push_back(ny);
}
if (mask & BACK_FACE)
{
// back face
vertices->push_back(origin+dy);
vertices->push_back(origin+dy+dz);
vertices->push_back(origin+dy+dx+dz);
vertices->push_back(origin+dy+dx);
normals->push_back(py);
normals->push_back(py);
normals->push_back(py);
normals->push_back(py);
}
if (mask & LEFT_FACE)
{
// left face
vertices->push_back(origin+dy);
vertices->push_back(origin);
vertices->push_back(origin+dz);
vertices->push_back(origin+dy+dz);
normals->push_back(nx);
normals->push_back(nx);
normals->push_back(nx);
normals->push_back(nx);
}
if (mask & RIGHT_FACE)
{
// right face
vertices->push_back(origin+dx+dy);
vertices->push_back(origin+dx+dy+dz);
vertices->push_back(origin+dx+dz);
vertices->push_back(origin+dx);
normals->push_back(px);
normals->push_back(px);
normals->push_back(px);
normals->push_back(px);
}
if (mask & TOP_FACE)
{
// top face
vertices->push_back(origin+dz);
vertices->push_back(origin+dz+dx);
vertices->push_back(origin+dz+dx+dy);
vertices->push_back(origin+dz+dy);
normals->push_back(pz);
normals->push_back(pz);
normals->push_back(pz);
normals->push_back(pz);
}
if (mask & BOTTOM_FACE)
{
// bottom face
vertices->push_back(origin);
vertices->push_back(origin+dy);
vertices->push_back(origin+dx+dy);
vertices->push_back(origin+dx);
normals->push_back(nz);
normals->push_back(nz);
normals->push_back(nz);
normals->push_back(nz);
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_QUADS, 0, vertices->size()));
return geode;
}
if (mask & BACK_FACE)
class SwitchHandler : public osgGA::GUIEventHandler
{
// back face
vertices->push_back(origin+dy);
vertices->push_back(origin+dy+dz);
vertices->push_back(origin+dy+dx+dz);
vertices->push_back(origin+dy+dx);
normals->push_back(py);
normals->push_back(py);
normals->push_back(py);
normals->push_back(py);
}
public:
if (mask & LEFT_FACE)
SwitchHandler():
_childNum(0) {}
virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& /*aa*/, osg::Object* object, osg::NodeVisitor* /*nv*/)
{
osg::Switch* sw = dynamic_cast<osg::Switch*>(object);
if (!sw) return false;
if (ea.getHandled()) return false;
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::KEYDOWN):
{
if (ea.getKey()=='n')
{
++_childNum;
if (_childNum >= sw->getNumChildren()) _childNum = 0;
sw->setSingleChildOn(_childNum);
return true;
}
break;
}
default:
break;
}
return false;
}
protected:
virtual ~SwitchHandler() {}
unsigned int _childNum;
};
osg::Node* createModel(osg::ArgumentParser& /*arguments*/)
{
// left face
vertices->push_back(origin+dy);
vertices->push_back(origin);
vertices->push_back(origin+dz);
vertices->push_back(origin+dy+dz);
normals->push_back(nx);
normals->push_back(nx);
normals->push_back(nx);
normals->push_back(nx);
}
osg::Switch* sw = new osg::Switch;
sw->setEventCallback(new ModelOne::SwitchHandler);
if (mask & RIGHT_FACE)
{
// right face
vertices->push_back(origin+dx+dy);
vertices->push_back(origin+dx+dy+dz);
vertices->push_back(origin+dx+dz);
vertices->push_back(origin+dx);
normals->push_back(px);
normals->push_back(px);
normals->push_back(px);
normals->push_back(px);
sw->addChild(ModelOne::createCube(ModelOne::FRONT_FACE), true);
sw->addChild(ModelOne::createCube(ModelOne::FRONT_FACE | ModelOne::BACK_FACE), false);
sw->addChild(ModelOne::createCube(ModelOne::FRONT_FACE | ModelOne::BACK_FACE | ModelOne::LEFT_FACE), false);
sw->addChild(ModelOne::createCube(ModelOne::FRONT_FACE | ModelOne::BACK_FACE | ModelOne::LEFT_FACE | ModelOne::RIGHT_FACE), false);
sw->addChild(ModelOne::createCube(ModelOne::FRONT_FACE | ModelOne::BACK_FACE | ModelOne::LEFT_FACE | ModelOne::RIGHT_FACE | ModelOne::TOP_FACE), false);
sw->addChild(ModelOne::createCube(ModelOne::FRONT_FACE | ModelOne::BACK_FACE | ModelOne::LEFT_FACE | ModelOne::RIGHT_FACE | ModelOne::TOP_FACE | ModelOne::BOTTOM_FACE), false);
return sw;
}
if (mask & TOP_FACE)
{
// top face
vertices->push_back(origin+dz);
vertices->push_back(origin+dz+dx);
vertices->push_back(origin+dz+dx+dy);
vertices->push_back(origin+dz+dy);
normals->push_back(pz);
normals->push_back(pz);
normals->push_back(pz);
normals->push_back(pz);
}
if (mask & BOTTOM_FACE)
{
// bottom face
vertices->push_back(origin);
vertices->push_back(origin+dy);
vertices->push_back(origin+dx+dy);
vertices->push_back(origin+dx);
normals->push_back(nz);
normals->push_back(nz);
normals->push_back(nz);
normals->push_back(nz);
}
geometry->addPrimitiveSet(new osg::DrawArrays(GL_QUADS, 0, vertices->size()));
return geode;
}
class SwitchHandler : public osgGA::GUIEventHandler
namespace ModelTwo
{
public:
SwitchHandler():
_childNum(0) {}
virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& /*aa*/, osg::Object* object, osg::NodeVisitor* /*nv*/)
osg::AnimationPath* createAnimationPath(const osg::Vec3& center,float radius,double looptime)
{
osg::Switch* sw = dynamic_cast<osg::Switch*>(object);
if (!sw) return false;
// set up the animation path
osg::AnimationPath* animationPath = new osg::AnimationPath;
animationPath->setLoopMode(osg::AnimationPath::LOOP);
if (ea.getHandled()) return false;
switch(ea.getEventType())
int numSamples = 40;
float yaw = 0.0f;
float yaw_delta = 2.0f*osg::PI/((float)numSamples-1.0f);
float roll = osg::inDegrees(30.0f);
double time=0.0f;
double time_delta = looptime/(double)numSamples;
for(int i=0;i<numSamples;++i)
{
case(osgGA::GUIEventAdapter::KEYDOWN):
{
if (ea.getKey()=='n')
{
++_childNum;
if (_childNum >= sw->getNumChildren()) _childNum = 0;
osg::Vec3 position(center+osg::Vec3(sinf(yaw)*radius,cosf(yaw)*radius,0.0f));
osg::Quat rotation(osg::Quat(roll,osg::Vec3(0.0,1.0,0.0))*osg::Quat(-(yaw+osg::inDegrees(90.0f)),osg::Vec3(0.0,0.0,1.0)));
animationPath->insert(time,osg::AnimationPath::ControlPoint(position,rotation));
yaw += yaw_delta;
time += time_delta;
sw->setSingleChildOn(_childNum);
return true;
}
break;
}
default:
break;
}
return false;
return animationPath;
}
protected:
osg::Node* createBase(const osg::Vec3& center,float radius)
{
virtual ~SwitchHandler() {}
unsigned int _childNum;
osg::Geode* geode = new osg::Geode;
// set up the texture of the base.
osg::StateSet* stateset = new osg::StateSet();
osg::Image* image = osgDB::readImageFile("Images/lz.rgb");
if (image)
{
osg::Texture2D* texture = new osg::Texture2D;
texture->setImage(image);
stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
}
geode->setStateSet( stateset );
osg::HeightField* grid = new osg::HeightField;
grid->allocate(38,39);
grid->setOrigin(center+osg::Vec3(-radius,-radius,0.0f));
grid->setXInterval(radius*2.0f/(float)(38-1));
grid->setYInterval(radius*2.0f/(float)(39-1));
float minHeight = FLT_MAX;
float maxHeight = -FLT_MAX;
unsigned int r;
for(r=0;r<39;++r)
{
for(unsigned int c=0;c<38;++c)
{
float h = vertex[r+c*39][2];
if (h>maxHeight) maxHeight=h;
if (h<minHeight) minHeight=h;
}
}
float hieghtScale = radius*0.5f/(maxHeight-minHeight);
float hieghtOffset = -(minHeight+maxHeight)*0.5f;
for(r=0;r<39;++r)
{
for(unsigned int c=0;c<38;++c)
{
float h = vertex[r+c*39][2];
grid->setHeight(c,r,(h+hieghtOffset)*hieghtScale);
}
}
geode->addDrawable(new osg::ShapeDrawable(grid));
osg::Group* group = new osg::Group;
group->addChild(geode);
return group;
}
osg::Node* createMovingModel(const osg::Vec3& center, float radius)
{
float animationLength = 10.0f;
osg::AnimationPath* animationPath = createAnimationPath(center,radius,animationLength);
osg::Group* model = new osg::Group;
osg::Node* cessna = osgDB::readNodeFile("cessna.osg");
if (cessna)
{
const osg::BoundingSphere& bs = cessna->getBound();
float size = radius/bs.radius()*0.3f;
osg::MatrixTransform* positioned = new osg::MatrixTransform;
positioned->setDataVariance(osg::Object::STATIC);
positioned->setMatrix(osg::Matrix::translate(-bs.center())*
osg::Matrix::scale(size,size,size)*
osg::Matrix::rotate(osg::inDegrees(180.0f),0.0f,0.0f,2.0f));
positioned->addChild(cessna);
osg::MatrixTransform* xform = new osg::MatrixTransform;
xform->setUpdateCallback(new osg::AnimationPathCallback(animationPath,0.0f,2.0));
xform->addChild(positioned);
model->addChild(xform);
}
return model;
}
osg::Node* createModel(osg::ArgumentParser& /*arguments*/)
{
osg::Vec3 center(0.0f,0.0f,0.0f);
float radius = 100.0f;
osg::Vec3 lightPosition(center+osg::Vec3(0.0f,0.0f,radius));
// the shadower model
osg::Node* shadower = createMovingModel(center,radius*0.5f);
shadower->setNodeMask(CastsShadowTraversalMask);
// the shadowed model
osg::Node* shadowed = createBase(center-osg::Vec3(0.0f,0.0f,radius*0.25),radius);
shadowed->setNodeMask(RecievesShadowTraversalMask);
osg::Group* group = new osg::Group;
group->addChild(shadowed);
group->addChild(shadower);
return group;
}
}
namespace ModelThree
{
osg::Group* createModel(osg::ArgumentParser& arguments)
{
osg::Group* scene = new osg::Group;
osg::ref_ptr<osg::Geode> geode_1 = new osg::Geode;
scene->addChild(geode_1.get());
osg::ref_ptr<osg::Geode> geode_2 = new osg::Geode;
osg::ref_ptr<osg::MatrixTransform> transform_2 = new osg::MatrixTransform;
transform_2->addChild(geode_2.get());
transform_2->setUpdateCallback(new osg::AnimationPathCallback(osg::Vec3(0, 0, 0), osg::Z_AXIS, osg::inDegrees(45.0f)));
scene->addChild(transform_2.get());
osg::ref_ptr<osg::Geode> geode_3 = new osg::Geode;
osg::ref_ptr<osg::MatrixTransform> transform_3 = new osg::MatrixTransform;
transform_3->addChild(geode_3.get());
transform_3->setUpdateCallback(new osg::AnimationPathCallback(osg::Vec3(0, 0, 0), osg::Z_AXIS, osg::inDegrees(-22.5f)));
scene->addChild(transform_3.get());
const float radius = 0.8f;
const float height = 1.0f;
osg::ref_ptr<osg::TessellationHints> hints = new osg::TessellationHints;
hints->setDetailRatio(2.0f);
osg::ref_ptr<osg::ShapeDrawable> shape;
shape = new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.0f, 0.0f, -2.0f), 10, 10.0f, 0.1f), hints.get());
shape->setColor(osg::Vec4(0.5f, 0.5f, 0.7f, 1.0f));
geode_1->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(0.0f, 0.0f, 0.0f), radius * 2), hints.get());
shape->setColor(osg::Vec4(0.8f, 0.8f, 0.8f, 1.0f));
geode_1->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Sphere(osg::Vec3(-3.0f, 0.0f, 0.0f), radius), hints.get());
shape->setColor(osg::Vec4(0.6f, 0.8f, 0.8f, 1.0f));
geode_2->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Box(osg::Vec3(3.0f, 0.0f, 0.0f), 2 * radius), hints.get());
shape->setColor(osg::Vec4(0.4f, 0.9f, 0.3f, 1.0f));
geode_2->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Cone(osg::Vec3(0.0f, -3.0f, 0.0f), radius, height), hints.get());
shape->setColor(osg::Vec4(0.2f, 0.5f, 0.7f, 1.0f));
geode_2->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Cylinder(osg::Vec3(0.0f, 3.0f, 0.0f), radius, height), hints.get());
shape->setColor(osg::Vec4(1.0f, 0.3f, 0.3f, 1.0f));
geode_2->addDrawable(shape.get());
shape = new osg::ShapeDrawable(new osg::Box(osg::Vec3(0.0f, 0.0f, 3.0f), 2.0f, 2.0f, 0.1f), hints.get());
shape->setColor(osg::Vec4(0.8f, 0.8f, 0.4f, 1.0f));
geode_3->addDrawable(shape.get());
// material
osg::ref_ptr<osg::Material> matirial = new osg::Material;
matirial->setColorMode(osg::Material::DIFFUSE);
matirial->setAmbient(osg::Material::FRONT_AND_BACK, osg::Vec4(0, 0, 0, 1));
matirial->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4(1, 1, 1, 1));
matirial->setShininess(osg::Material::FRONT_AND_BACK, 64.0f);
scene->getOrCreateStateSet()->setAttributeAndModes(matirial.get(), osg::StateAttribute::ON);
bool withBaseTexture = true;
while(arguments.read("--with-base-texture")) { withBaseTexture = true; }
while(arguments.read("--no-base-texture")) { withBaseTexture = false; }
if (withBaseTexture)
{
scene->getOrCreateStateSet()->setTextureAttributeAndModes( 0, new osg::Texture2D(osgDB::readImageFile("Images/lz.rgb")), osg::StateAttribute::ON);
}
return scene;
}
}
};
osg::Node* createTestModel(osg::ArgumentParser& arguments)
{
if (arguments.read("-1"))
{
osg::Switch* sw = new osg::Switch;
sw->setEventCallback(new SwitchHandler);
sw->addChild(createCube(FRONT_FACE), true);
sw->addChild(createCube(FRONT_FACE | BACK_FACE), false);
sw->addChild(createCube(FRONT_FACE | BACK_FACE | LEFT_FACE), false);
sw->addChild(createCube(FRONT_FACE | BACK_FACE | LEFT_FACE | RIGHT_FACE), false);
sw->addChild(createCube(FRONT_FACE | BACK_FACE | LEFT_FACE | RIGHT_FACE | TOP_FACE), false);
sw->addChild(createCube(FRONT_FACE | BACK_FACE | LEFT_FACE | RIGHT_FACE | TOP_FACE | BOTTOM_FACE), false);
return sw;
return ModelOne::createModel(arguments);
}
else if (arguments.read("-2"))
{
return 0;
return ModelTwo::createModel(arguments);
}
else /*if (arguments.read("-3"))*/
{
return 0;
return ModelThree::createModel(arguments);
}
}
@@ -258,7 +498,7 @@ int main(int argc, char** argv)
while (arguments.read("--CullThreadPerCameraDrawThreadPerContext")) viewer.setThreadingModel(osgViewer::Viewer::CullThreadPerCameraDrawThreadPerContext);
bool postionalLight = false;
bool postionalLight = true;
while (arguments.read("--positionalLight")) postionalLight = true;
while (arguments.read("--directionalLight")) postionalLight = false;
@@ -302,7 +542,11 @@ int main(int argc, char** argv)
viewer.addEventHandler( new osgViewer::StatsHandler() );
osg::ref_ptr<osg::Node> model = osgDB::readNodeFiles(arguments);
if (!model)
if (model.valid())
{
model->setNodeMask(CastsShadowTraversalMask | RecievesShadowTraversalMask);
}
else
{
model = createTestModel(arguments);
}
@@ -326,10 +570,9 @@ int main(int argc, char** argv)
osg::ref_ptr<osgShadow::ShadowedScene> shadowedScene = new osgShadow::ShadowedScene;
shadowedScene->setRecievesShadowTraversalMask(0x1);
shadowedScene->setCastsShadowTraversalMask(0x2);
shadowedScene->setRecievesShadowTraversalMask(RecievesShadowTraversalMask);
shadowedScene->setCastsShadowTraversalMask(CastsShadowTraversalMask);
model->setNodeMask(shadowedScene->getCastsShadowTraversalMask());
if (arguments.read("--sv"))
{
@@ -391,9 +634,6 @@ int main(int argc, char** argv)
shadowedScene->addChild(model.get());
shadowedScene->addChild(ls.get());
osgDB::writeNodeFile(*shadowedScene, "shadow.osg");
viewer.setSceneData(shadowedScene.get());
// create the windows and run the threads.