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/*=========================================================================
Program: Visualization Toolkit
Module: vtkOpenXRModel.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkOpenXRModel.h"
#include "vtkObjectFactory.h"
#include "vtkOpenGLIndexBufferObject.h"
#include "vtkOpenGLVertexArrayObject.h"
#include "vtkOpenGLVertexBufferObject.h"
#include "vtkTextureObject.h"
#include <thread>
/*=========================================================================
vtkOpenXRModel
=========================================================================*/
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkOpenXRModel);
//------------------------------------------------------------------------------
void vtkOpenXRModel::FillModelHelper()
{
this->ModelVBO->Upload(this->ModelVBOData, vtkOpenGLBufferObject::ArrayBuffer);
this->ModelHelper.IBO->Upload(this->ModelIBOData, vtkOpenGLBufferObject::ElementArrayBuffer);
this->ModelHelper.IBO->IndexCount = this->ModelIBOData.size();
}
//------------------------------------------------------------------------------
void vtkOpenXRModel::SetPositionAndTCoords()
{
this->ModelHelper.VAO->Bind();
vtkShaderProgram* program = this->ModelHelper.Program;
if (!this->ModelHelper.VAO->AddAttributeArray(
program, this->ModelVBO, "position", 0, 5 * sizeof(float), VTK_FLOAT, 3, false))
{
vtkErrorMacro(<< "Error setting position in shader VAO.");
}
if (!this->ModelHelper.VAO->AddAttributeArray(program, this->ModelVBO, "v2TexCoordsIn",
3 * sizeof(float), 5 * sizeof(float), VTK_FLOAT, 2, false))
{
vtkErrorMacro(<< "Error setting tcoords in shader VAO.");
}
}
//------------------------------------------------------------------------------
void vtkOpenXRModel::CreateTextureObject(vtkOpenGLRenderWindow* win)
{
this->TextureObject->SetContext(win);
this->TextureObject->Create2DFromRaw(16, 16, 4, VTK_UNSIGNED_CHAR,
const_cast<void*>(static_cast<const void*>(this->TextureData.data())));
this->TextureObject->SetWrapS(vtkTextureObject::ClampToEdge);
this->TextureObject->SetWrapT(vtkTextureObject::ClampToEdge);
this->TextureObject->SetMinificationFilter(vtkTextureObject::LinearMipmapLinear);
this->TextureObject->SetGenerateMipmap(true);
}
void vtkOpenXRModel::AsyncLoad()
{
// for now use a pyramid for a controller
for (int k = 0; k < 2; k++)
{
for (int j = 0; j < 2; j++)
{
for (int i = 0; i < 2; i++)
{
// 5 cm x 10 cm controller
this->ModelVBOData.push_back(i * 0.05);
this->ModelVBOData.push_back(j * 0.05);
this->ModelVBOData.push_back(k * 0.1);
// tcoords
this->ModelVBOData.push_back(0.0);
this->ModelVBOData.push_back(0.0);
}
}
}
this->ModelIBOData.push_back(0);
this->ModelIBOData.push_back(4);
this->ModelIBOData.push_back(5);
this->ModelIBOData.push_back(0);
this->ModelIBOData.push_back(4);
this->ModelIBOData.push_back(6);
this->ModelIBOData.push_back(4);
this->ModelIBOData.push_back(5);
this->ModelIBOData.push_back(6);
for (int i = 0; i < 16 * 16; i++)
{
this->TextureData.push_back(128);
this->TextureData.push_back(255);
this->TextureData.push_back(128);
this->TextureData.push_back(255);
}
this->ModelLoaded = true;
this->ModelLoading = false;
}
//------------------------------------------------------------------------------
void vtkOpenXRModel::LoadModelAndTexture(vtkOpenGLRenderWindow* win)
{
// if we do not have the model loaded and haven't initiated loading
if (!this->ModelLoaded && !this->ModelLoading)
{
this->ModelLoading = true;
// loading the models can be slow so do it in a separate thread
std::thread loader([this] { this->AsyncLoad(); });
loader.detach();
}
if (this->ModelLoaded && !this->Loaded)
{
if (!this->Build(win))
{
vtkErrorMacro("Unable to create GL model from render model " << this->GetName());
}
this->Loaded = true;
}
}
VTK_ABI_NAMESPACE_END
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