FGFS-4.1/OpenSceneGraph
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Updates to the osglogo demo.

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This commit is contained in:
Robert Osfield
2002-12-05 15:21:25 +00:00
parent a91324e158
commit 92d31b132b
1 changed files with 56 additions and 7 deletions
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63
src/Demos/osglogo/osglogo.cpp
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@@ -17,7 +17,7 @@
#include <osgDB/ReadFile>
#include <osg/Math>
//#include "CreateShadowedScene.h"
osg::Geometry* createWing(const osg::Vec3& left, const osg::Vec3& nose, const osg::Vec3& right,float chordRatio)
{
@@ -91,7 +91,7 @@ osg:: Node* createTextLeft(const osg::BoundingBox& bb)
text->setText("OpenSceneGraph");
text->setAlignment(osgText::Text::RIGHT_CENTER);
text->setAxisAlignment(osgText::Text::XZ_PLANE);
text->setPosition(bb.center()-osg::Vec3((bb.xMax()-bb.xMin()),0.0f,(bb.zMax()-bb.zMin())*0.2f));
text->setPosition(bb.center()-osg::Vec3((bb.xMax()-bb.xMin()),-(bb.yMax()-bb.yMin())*0.5f,(bb.zMax()-bb.zMin())*0.2f));
text->setColor(osg::Vec4(0.37f,0.48f,0.67f,1.0f));
osg::StateSet* stateset = text->getOrCreateStateSet();
stateset->setMode(GL_LIGHTING,osg::StateAttribute::OFF);
@@ -179,6 +179,37 @@ osg:: Node* createBoxNo5(const osg::BoundingBox& bb,float chordRatio)
return geode;
}
osg:: Node* createBackdrop(const osg::Vec3& corner,const osg::Vec3& top,const osg::Vec3& right)
{
osg::Geometry* geom = new osg::Geometry;
osg::Vec3 normal = (corner-top)^(right-corner);
normal.normalize();
osg::Vec3Array* vertices = new osg::Vec3Array;
vertices->push_back(top);
vertices->push_back(corner);
vertices->push_back(right);
vertices->push_back(right+(top-corner));
geom->setVertexArray(vertices);
osg::Vec3Array* normals = new osg::Vec3Array;
normals->push_back(normal);
geom->setNormalArray(normals);
geom->setNormalBinding(osg::Geometry::BIND_OVERALL);
geom->addPrimitiveSet(new osg::DrawArrays(GL_QUADS,0,vertices->getNumElements()));
osg::Geode* geode = osgNew osg::Geode();
geode->addDrawable(geom);
return geode;
}
osg::Node* createLogo()
{
osg::BoundingBox bb(osg::Vec3(0.0f,0.0f,0.0f),osg::Vec3(100.0f,100.0f,100.0f));
@@ -186,7 +217,7 @@ osg::Node* createLogo()
float sphereRatio = 0.6f;
// create a group to hold the whole model.
osg::Group* group = new osg::Group;
osg::Group* logo_group = new osg::Group;
// create a transform to orientate the box and globe.
osg::MatrixTransform* xform = new osg::MatrixTransform;
@@ -201,15 +232,33 @@ osg::Node* createLogo()
xform->addChild(createBoxNo5(bb,chordRatio));
// add the transform to the group.
group->addChild(xform);
logo_group->addChild(xform);
group->addChild(createGlobe(bb,sphereRatio));
logo_group->addChild(createGlobe(bb,sphereRatio));
// add the text to the group.
//group->addChild(createTextBelow(bb));
group->addChild(createTextLeft(bb));
logo_group->addChild(createTextLeft(bb));
// create the backdrop to render the shadow to.
osg::Vec3 corner(-800.0f,150.0f,-100.0f);
osg::Vec3 top(0.0f,0.0f,300.0f); top += corner;
osg::Vec3 right(1000.0f,0.0f,0.0f); right += corner;
osg::Group* backdrop = new osg::Group;
backdrop->addChild(createBackdrop(corner,top,right));
return group;
osg::Vec3 lightPosition(-500.0f,-2500.0f,500.0f);
//osg::Node* scene = createShadowedScene(logo_group,backdrop,lightPosition,0.0f,0);
osg::Group* scene = new osg::Group;
scene->addChild(logo_group);
scene->addChild(backdrop);
return scene;
}
int main( int argc, char **argv )