Hi there
I would like to wrap (repeated) my texture image on a geometry object. I
read somewhere, that this is not possible directly on the geometry, but
how can I do it otherwise? Here is my code:
/*
* creates the ground geometry
*/
// creates the vertices array
ref_ptr<Vec3Array> verticesGround = new Vec3Array;
verticesGround->push_back(Vec3(-WORLD_INFINITY, 0.0,
-WORLD_INFINITY)); // back left
verticesGround->push_back(Vec3(WORLD_INFINITY, 0.0,
-WORLD_INFINITY)); // back right
verticesGround->push_back(Vec3(WORLD_INFINITY, 0.0,
WORLD_INFINITY)); // front right
verticesGround->push_back(Vec3(-WORLD_INFINITY, 0.0,
WORLD_INFINITY)); // front left
// creates the normal array
ref_ptr<Vec3Array> normalsGround = new Vec3Array;
normalsGround->push_back(Vec3(0.0, 1.0, 0.0));
// creates the texture coordinates array
ref_ptr<Vec2Array> texCoordGround = new Vec2Array;
texCoordGround->push_back(Vec2(0.0, 0.0));
texCoordGround->push_back(Vec2(1.0, 0.0));
texCoordGround->push_back(Vec2(1.0, 1.0));
texCoordGround->push_back(Vec2(0.0, 1.0));
// loads the texture image
ref_ptr<Image> imgGrass =
osgDB::readImageFile(Utilities::filePath("res/osg/grass.png").toStdString());
// attaches the image to the texture
ref_ptr<Texture2D> texGround = new Texture2D;
texGround->setDataVariance(Object::DYNAMIC);
texGround->setWrap(Texture::WRAP_S, Texture::REPEAT);
texGround->setWrap(Texture::WRAP_T, Texture::REPEAT);
texGround->setImage(imgGrass.get());
// releases the image after applying
texGround->setUnRefImageDataAfterApply(true);
// creates the geometry
ref_ptr<Geometry> geomGround = new Geometry;
geomGround->setVertexArray(verticesGround.get());
geomGround->setNormalArray(normalsGround.get());
geomGround->setTexCoordArray(0, texCoordGround.get());
// adds the primitive set to the geometry
geomGround->addPrimitiveSet(new DrawArrays(PrimitiveSet::QUADS, 0, 4));
// enables all the necessary states for the ground geometry node
ref_ptr<StateSet> stateGroundGeometry =
geomGround->getOrCreateStateSet();
stateGroundGeometry->setTextureAttributeAndModes(0, texGround.get(),
StateAttribute::ON);
// creates the geode
ref_ptr<Geode> geoGround = new Geode;
geoGround->addDrawable(geomGround.get());
Thanks a lot in advance!
Best regards
Dominic
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