void ElementData::bind()
{
if (hasIndices())
{
if (!ibo_)
{
glGenBuffers(1, &ibo_);
}
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo_);
glBufferData(
GL_ELEMENT_ARRAY_BUFFER,
sizeof(GLuint) * indices.size(),
indices.data(),
GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0u);
}
else
{
if (ibo_)
{
glDeleteBuffers(1, &ibo_);
}
}
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo_);
}
GLint ElementData::getElementIndex(int i) const
{
if (hasIndices())
{
return indices[i];
}
else
{
return i + offset;
}
}
GLint ElementData::getNumElements() const
{
if (hasIndices())
{
return indices.size();
}
else
{
return count;
}
}
void ElementData::draw()
{
if (hasIndices())
{
glDrawElements(
GL_TRIANGLES,
getNumElements(),
GL_UNSIGNED_INT,
reinterpret_cast<GLvoid*>(0));
}
else
{
glDrawArrays(GL_TRIANGLES, offset, getNumElements());
}
}
void ofxMesh::toMesh(ofMesh & mesh){
mesh.clear();
if (hasVertices()) {
mesh.getVertices()=getVertices();
}
if (hasColors()) {
mesh.getColors()=getColors();
}
if (hasNormals()) {
mesh.getNormals()=getNormals();
}
if (hasTexCoords()) {
mesh.getTexCoords()=getTexCoords();
}
if (hasIndices()) {
mesh.getIndices()=getIndices();
}
}
//// Drawable functions ////
void DMesh::draw( RenderInfo& r) {
glPushMatrix();
glMultMatrixf(m_transform);
// Material
r.material( Drawable::m_material );
r.state( 1 + (getNormalPointer()? 2:0) + (getTexCoordPointer()?4:0) );
glVertexPointer(3, GL_FLOAT, getStride(), getVertexPointer());
glNormalPointer( GL_FLOAT, getStride(), getNormalPointer());
glTexCoordPointer(2, GL_FLOAT, getStride(), getTexCoordPointer());
// Tangents?
if(getTangentPointer() && base::Shader::current().ready()) {
base::Shader::current().AttributePointer("tangent", 3, GL_FLOAT, 0, getStride(), getTangentPointer());
}
// Draw it
if(hasIndices()) glDrawElements( getMode(), getSize(), GL_UNSIGNED_SHORT, getIndexPointer());
else glDrawArrays( getMode(), 0, getSize());
glPopMatrix();
}
//! Total number of elements (triangles/lines/...)
size_t totalElements() const {
if (hasIndices())
return indices().size() / 3;
return m_vertices.size() /3;
}
