Added acompole more
This commit is contained in:
Don BURNS
parent
e8f256a59d
commit
2462c6273c
0
src/Demos/osgtexture/Makedepend
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0
src/Demos/osgtexture/Makedepend
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20
src/Demos/osgtexture/Makefile
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src/Demos/osgtexture/Makefile
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#!smake
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include ../../../Make/makedefs
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C++FILES = \
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osgtexture.cpp
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TARGET = ../../../bin/osgtexture
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TARGET_BIN_FILES = osgtexture
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#note, use this library list when using the Performer osgPlugin.
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#LIBS = ${PFLIBS} -losgGLUT -losgUtil -losgDB -losg $(GLUTLIB) -lGLU -lGL -lm -lXmu -lX11 -lXi
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#note, standard library list.
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LIBS = -losgGLUT -losgUtil -losgDB -losg $(GLUTLIB) -lGLU -lGL -lm -lXmu -lX11 -lXi
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C++FLAGS += -I../../../include
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LDFLAGS += -L../../../lib
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include ../../../Make/makerules
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398
src/Demos/osgtexture/osgtexture.cpp
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src/Demos/osgtexture/osgtexture.cpp
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#include <osg/Node>
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#include <osg/GeoSet>
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#include <osg/Notify>
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#include <osg/Transform>
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#include <osg/Texture>
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#include <osgUtil/TrackballManipulator>
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#include <osgUtil/FlightManipulator>
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#include <osgUtil/DriveManipulator>
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#include <osgDB/Registry>
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#include <osgDB/ReadFile>
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#include <GL/glut.h>
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#include <osgGLUT/Viewer>
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//
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// A simple demo demonstrating different texturing modes,
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// including using of texture extensions.
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//
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typedef std::vector< osg::ref_ptr<osg::Image> > ImageList;
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/**
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* Function to read several images files (typically one) as specified
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* on the command line, and return them in an ImageList
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*/
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ImageList getImagesFromFiles(int argc,char **argv)
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{
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ImageList imageList;
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int i;
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typedef std::vector<osg::Node*> NodeList;
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NodeList nodeList;
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for( i = 1; i < argc; i++ )
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{
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if (argv[i][0]=='-')
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{
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switch(argv[i][1])
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{
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case('l'):
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++i;
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if (i<argc)
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{
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osgDB::Registry::instance()->loadLibrary(argv[i]);
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}
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break;
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case('e'):
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++i;
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if (i<argc)
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{
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std::string libName = osgDB::Registry::instance()->createLibraryNameForExt(argv[i]);
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osgDB::Registry::instance()->loadLibrary(libName);
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}
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break;
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}
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} else
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{
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osg::Image *image = osgDB::readImageFile( argv[i] );
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if (image)
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{
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imageList.push_back(image);
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}
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}
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}
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if (imageList.size()==0)
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{
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osg::notify(osg::WARN) << "No image data loaded."<<endl;
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}
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return imageList;
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}
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/** create 2,2 square with center at 0,0,0 and aligned along the XZ plan */
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osg::Drawable* createSquare(float textureCoordMax=1.0f)
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{
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// set up the geoset.
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osg::GeoSet* gset = new osg::GeoSet;
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osg::Vec3* coords = new osg::Vec3 [4];
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coords[0].set(-1.0f,0.0f,1.0f);
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coords[1].set(-1.0f,0.0f,-1.0f);
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coords[2].set(1.0f,0.0f,-1.0f);
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coords[3].set(1.0f,0.0f,1.0f);
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gset->setCoords(coords);
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osg::Vec3* norms = new osg::Vec3 [1];
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norms[0].set(0.0f,-1.0f,0.0f);
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gset->setNormals(norms);
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gset->setNormalBinding(osg::GeoSet::BIND_OVERALL);
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osg::Vec2* tcoords = new osg::Vec2 [4];
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tcoords[0].set(0.0f,textureCoordMax);
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tcoords[1].set(0.0f,0.0f);
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tcoords[2].set(textureCoordMax,0.0f);
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tcoords[3].set(textureCoordMax,textureCoordMax);
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gset->setTextureCoords(tcoords);
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gset->setTextureBinding(osg::GeoSet::BIND_PERVERTEX);
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gset->setNumPrims(1);
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gset->setPrimType(osg::GeoSet::QUADS);
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return gset;
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}
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osg::Node* createTexturedItem(const osg::Vec3& offset,osg::Texture* texture,osg::Node* geometry)
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{
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// create a tranform node to position each square in appropriate
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// place and also to add individual texture set to it, so that
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// that state is inherited down to its children.
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osg::Transform* local_transform = new osg::Transform;
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local_transform->preTranslate(offset.x(),offset.y(),offset.z());
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// create the StateSet to store the texture data
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osg::StateSet* stateset = new osg::StateSet;
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stateset->setAttributeAndModes(texture,osg::StateAttribute::ON);
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// turn the face culling off so you can see the texture from
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// all angles.
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stateset->setMode(GL_CULL_FACE,osg::StateAttribute::OFF);
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// attach the setset to tranform node.
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local_transform->setStateSet(stateset);
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// add the geode to the transform.
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local_transform->addChild(geometry);
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return local_transform;
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}
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osg::Node* createLayer(const osg::Vec3& offset,osg::Image* image,osg::Node* geometry,osg::Node* geometryRep)
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{
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if (image==NULL) return NULL;
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osg::Transform* top_transform = new osg::Transform;
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top_transform->preTranslate(offset.x(),offset.y(),offset.z());
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osg::Vec3 local_offset(0.0f,0.0f,0.0f);
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osg::Vec3 local_delta(3.0f,0.0f,0.0f);
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// defaults mipmapped texturing.
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometry));
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local_offset += local_delta;
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}
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// bilinear
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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// set up bilinear filtering.
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texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR_MIPMAP_NEAREST);
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texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometry));
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local_offset += local_delta;
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}
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// trilinear
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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// set up trilinear filtering.
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texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR_MIPMAP_LINEAR);
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texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::LINEAR);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometry));
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local_offset += local_delta;
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}
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// anisotropic
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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// set up anistropic filtering.
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texture->setFilter(osg::Texture::MIN_FILTER,osg::Texture::LINEAR_MIPMAP_LINEAR);
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texture->setFilter(osg::Texture::MAG_FILTER,osg::Texture::ANISOTROPIC);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometry));
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local_offset += local_delta;
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}
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// arb compression
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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texture->setInternalFormatMode(osg::Texture::USE_ARB_COMPRESSION);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometry));
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local_offset += local_delta;
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}
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// s3tc_dxt1 compression
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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texture->setInternalFormatMode(osg::Texture::USE_S3TC_DXT1_COMPRESSION);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometry));
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local_offset += local_delta;
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}
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// default wrap mode. (osg::Texture::CLAMP)
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometryRep));
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local_offset += local_delta;
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}
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// repeat wrap mode.
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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texture->setWrap(osg::Texture::WRAP_S,osg::Texture::REPEAT);
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texture->setWrap(osg::Texture::WRAP_T,osg::Texture::REPEAT);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometryRep));
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local_offset += local_delta;
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}
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// mirror wrap mode.
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{
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// create the texture attribute
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osg::Texture* texture = new osg::Texture;
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texture->setImage(image);
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texture->setWrap(osg::Texture::WRAP_S,osg::Texture::MIRROR);
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texture->setWrap(osg::Texture::WRAP_T,osg::Texture::MIRROR);
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// add the transform node to root group node.
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top_transform->addChild(createTexturedItem(local_offset,texture,geometryRep));
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local_offset += local_delta;
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}
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return top_transform;
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}
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osg::Node* createModelFromImages(ImageList& imageList)
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{
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if (imageList.empty()) return NULL;
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// create the root node which will hold the model.
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osg::Group* root = new osg::Group();
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// create a single drawable to be shared by each texture instance.
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osg::Drawable* drawable_noTexCoodRep = createSquare(1.0f);
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// add the drawable into a single goede to be shared...
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osg::Geode* geode_noTexCoodRep = new osg::Geode();
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geode_noTexCoodRep->addDrawable(drawable_noTexCoodRep);
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// create a single drawable to be shared by each texture instance.
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osg::Drawable* drawable_texCoodRep = createSquare(2.0f);
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// add the drawable into a single goede to be shared...
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osg::Geode* geode_texCoodRep = new osg::Geode();
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geode_texCoodRep->addDrawable(drawable_texCoodRep);
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osg::Vec3 offset(0.0f,0.0f,0.0f);
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osg::Vec3 delta(0.0f,0.0f,3.0f);
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// step through the image list processing each image in turn.
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for(ImageList::iterator itr=imageList.begin();
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itr!=imageList.end();
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++itr)
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{
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// add the transform node to root group node.
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root->addChild(createLayer(offset,itr->get(),geode_noTexCoodRep,geode_texCoodRep));
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offset += delta;
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}
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return root;
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}
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void write_usage()
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{
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osg::notify(osg::NOTICE)<<endl;
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osg::notify(osg::NOTICE)<<"usage:"<<endl;
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osg::notify(osg::NOTICE)<<" osgtexture [options] image_file1 [image_infile2 ...]"<<endl;
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osg::notify(osg::NOTICE)<<endl;
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osg::notify(osg::NOTICE)<<"options:"<<endl;
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osg::notify(osg::NOTICE)<<" -l libraryName - load plugin of name libraryName"<<endl;
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osg::notify(osg::NOTICE)<<" i.e. -l osgdb_pfb"<<endl;
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osg::notify(osg::NOTICE)<<" Useful for loading reader/writers which can load"<<endl;
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osg::notify(osg::NOTICE)<<" other file formats in addition to its extension."<<endl;
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osg::notify(osg::NOTICE)<<" -e extensionName - load reader/wrter plugin for file extension"<<endl;
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osg::notify(osg::NOTICE)<<" i.e. -e pfb"<<endl;
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osg::notify(osg::NOTICE)<<" Useful short hand for specifying full library name as"<<endl;
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osg::notify(osg::NOTICE)<<" done with -l above, as it automatically expands to the"<<endl;
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osg::notify(osg::NOTICE)<<" full library name appropriate for each platform."<<endl;
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osg::notify(osg::NOTICE)<<endl;
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osg::notify(osg::NOTICE)<<"example:"<<endl;
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osg::notify(osg::NOTICE)<<" osgtexture lz.rgb"<<endl;
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osg::notify(osg::NOTICE)<<endl;
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}
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int main( int argc, char **argv )
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{
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// initialize the GLUT
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glutInit( &argc, argv );
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if (argc<2)
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{
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write_usage();
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return 0;
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}
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// load the images specified on command line
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ImageList imageList = getImagesFromFiles(argc,argv);
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if (!imageList.empty())
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{
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// create a model from the images.
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osg::Node* rootNode = createModelFromImages(imageList);
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// initialize the viewer.
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osgGLUT::Viewer viewer;
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viewer.addViewport( rootNode );
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// register trackball, flight and drive.
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viewer.registerCameraManipulator(new osgUtil::TrackballManipulator);
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viewer.registerCameraManipulator(new osgUtil::FlightManipulator);
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viewer.registerCameraManipulator(new osgUtil::DriveManipulator);
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viewer.open();
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viewer.run();
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}
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else
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write_usage();
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return 0;
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}
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