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Diffstat (limited to 'Samples/CommonSrc/Render/Render_XmlSceneLoader.cpp')
| -rw-r--r-- | Samples/CommonSrc/Render/Render_XmlSceneLoader.cpp | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/Samples/CommonSrc/Render/Render_XmlSceneLoader.cpp b/Samples/CommonSrc/Render/Render_XmlSceneLoader.cpp new file mode 100644 index 0000000..cc0eb47 --- /dev/null +++ b/Samples/CommonSrc/Render/Render_XmlSceneLoader.cpp @@ -0,0 +1,390 @@ +/************************************************************************************
+
+Filename : Render_XmlSceneLoader.cpp
+Content : Imports and exports XML files - implementation
+Created : January 21, 2013
+Authors : Robotic Arm Software - Peter Hoff, Dan Goodman, Bryan Croteau
+
+Copyright : Copyright 2013 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#include "Render_XmlSceneLoader.h"
+#include <Kernel/OVR_Log.h>
+
+#ifdef OVR_DEFINE_NEW
+#undef new
+#endif
+
+namespace OVR { namespace Render {
+
+XmlHandler::XmlHandler() : pXmlDocument(NULL)
+{
+ pXmlDocument = new tinyxml2::XMLDocument();
+}
+
+XmlHandler::~XmlHandler()
+{
+ delete pXmlDocument;
+}
+
+bool XmlHandler::ReadFile(const char* fileName, OVR::Render::RenderDevice* pRender,
+ OVR::Render::Scene* pScene,
+ OVR::Array<Ptr<CollisionModel> >* pCollisions,
+ OVR::Array<Ptr<CollisionModel> >* pGroundCollisions)
+{
+ if(pXmlDocument->LoadFile(fileName) != 0)
+ {
+ return false;
+ }
+
+ // Extract the relative path to our working directory for loading textures
+ filePath[0] = 0;
+ SPInt pos = 0;
+ SPInt len = strlen(fileName);
+ for(SPInt i = len; i > 0; i--)
+ {
+ if (fileName[i-1]=='\\' || fileName[i-1]=='/')
+ {
+ memcpy(filePath, fileName, i);
+ filePath[i] = 0;
+ break;
+ }
+ }
+
+ // Load the textures
+ OVR_DEBUG_LOG_TEXT(("Loading textures..."));
+ XMLElement* pXmlTexture = pXmlDocument->FirstChildElement("scene")->FirstChildElement("textures");
+ if (pXmlTexture)
+ {
+ pXmlTexture->QueryIntAttribute("count", &textureCount);
+ pXmlTexture = pXmlTexture->FirstChildElement("texture");
+ }
+
+ for(int i = 0; i < textureCount; ++i)
+ {
+ const char* textureName = pXmlTexture->Attribute("fileName");
+ SPInt dotpos = strcspn(textureName, ".");
+ char fname[300];
+
+ if (pos == len)
+ {
+ OVR_sprintf(fname, 300, "%s", textureName);
+ }
+ else
+ {
+ OVR_sprintf(fname, 300, "%s%s", filePath, textureName);
+ }
+
+ SysFile* pFile = new SysFile(fname);
+ Ptr<Texture> texture;
+ if (textureName[dotpos + 1] == 'd' || textureName[dotpos + 1] == 'D')
+ {
+ // DDS file
+ texture.SetPtr(*LoadTextureDDS(pRender, pFile));
+ }
+ else
+ {
+ texture.SetPtr(*LoadTextureTga(pRender, pFile));
+ }
+
+ Textures.PushBack(texture);
+ pFile->Close();
+ pFile->Release();
+ pXmlTexture = pXmlTexture->NextSiblingElement("texture");
+ }
+ OVR_DEBUG_LOG_TEXT(("Done.\n"));
+
+ // Load the models
+ pXmlDocument->FirstChildElement("scene")->FirstChildElement("models")->
+ QueryIntAttribute("count", &modelCount);
+
+ OVR_DEBUG_LOG(("Loading models... %i models to load...", modelCount));
+ XMLElement* pXmlModel = pXmlDocument->FirstChildElement("scene")->
+ FirstChildElement("models")->FirstChildElement("model");
+ for(int i = 0; i < modelCount; ++i)
+ {
+ if (i % 15 == 0)
+ {
+ OVR_DEBUG_LOG_TEXT(("%i models remaining...", modelCount - i));
+ }
+ Models.PushBack(*new Model(Prim_Triangles));
+ bool isCollisionModel = false;
+ pXmlModel->QueryBoolAttribute("isCollisionModel", &isCollisionModel);
+ Models[i]->IsCollisionModel = isCollisionModel;
+ if (isCollisionModel)
+ {
+ Models[i]->Visible = false;
+ }
+
+ //read the vertices
+ OVR::Array<Vector3f> *vertices = new OVR::Array<Vector3f>();
+ ParseVectorString(pXmlModel->FirstChildElement("vertices")->FirstChild()->
+ ToText()->Value(), vertices);
+
+ for (unsigned int vertexIndex = 0; vertexIndex < vertices->GetSize(); ++vertexIndex)
+ {
+ vertices->At(vertexIndex).x *= -1.0f;
+ }
+
+ //read the normals
+ OVR::Array<Vector3f> *normals = new OVR::Array<Vector3f>();
+ ParseVectorString(pXmlModel->FirstChildElement("normals")->FirstChild()->
+ ToText()->Value(), normals);
+
+ for (unsigned int normalIndex = 0; normalIndex < normals->GetSize(); ++normalIndex)
+ {
+ normals->At(normalIndex).z *= -1.0f;
+ }
+
+ //read the textures
+ OVR::Array<Vector3f> *diffuseUVs = new OVR::Array<Vector3f>();
+ OVR::Array<Vector3f> *lightmapUVs = new OVR::Array<Vector3f>();
+ int diffuseTextureIndex = -1;
+ int lightmapTextureIndex = -1;
+ XMLElement* pXmlCurMaterial = pXmlModel->FirstChildElement("material");
+
+ while(pXmlCurMaterial != NULL)
+ {
+ if(pXmlCurMaterial->Attribute("name", "diffuse"))
+ {
+ pXmlCurMaterial->FirstChildElement("texture")->
+ QueryIntAttribute("index", &diffuseTextureIndex);
+ if(diffuseTextureIndex > -1)
+ {
+ ParseVectorString(pXmlCurMaterial->FirstChildElement("texture")->
+ FirstChild()->ToText()->Value(), diffuseUVs, true);
+ }
+ }
+ else if(pXmlCurMaterial->Attribute("name", "lightmap"))
+ {
+ pXmlCurMaterial->FirstChildElement("texture")->
+ QueryIntAttribute("index", &lightmapTextureIndex);
+ if(lightmapTextureIndex > -1)
+ {
+ XMLElement* firstChildElement = pXmlCurMaterial->FirstChildElement("texture");
+ XMLNode* firstChild = firstChildElement->FirstChild();
+ XMLText* text = firstChild->ToText();
+ const char* value = text->Value();
+ ParseVectorString(value, lightmapUVs, true);
+ }
+ }
+
+ pXmlCurMaterial = pXmlCurMaterial->NextSiblingElement("material");
+ }
+
+ //set up the shader
+ Ptr<ShaderFill> shader = *new ShaderFill(*pRender->CreateShaderSet());
+ shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Vertex, VShader_MVP));
+ if(diffuseTextureIndex > -1)
+ {
+ shader->SetTexture(0, Textures[diffuseTextureIndex]);
+ if(lightmapTextureIndex > -1)
+ {
+ shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_MultiTexture));
+ shader->SetTexture(1, Textures[lightmapTextureIndex]);
+ }
+ else
+ {
+ shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_Texture));
+ }
+ }
+ else
+ {
+ shader->GetShaders()->SetShader(pRender->LoadBuiltinShader(Shader_Fragment, FShader_LitGouraud));
+ }
+ Models[i]->Fill = shader;
+
+ //add all the vertices to the model
+ const UPInt numVerts = vertices->GetSize();
+ for(UPInt v = 0; v < numVerts; ++v)
+ {
+ if(diffuseTextureIndex > -1)
+ {
+ if(lightmapTextureIndex > -1)
+ {
+ Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 255, 255),
+ diffuseUVs->At(v).x, diffuseUVs->At(v).y, lightmapUVs->At(v).x, lightmapUVs->At(v).y,
+ normals->At(v).x, normals->At(v).y, normals->At(v).z);
+ }
+ else
+ {
+ Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 255, 255),
+ diffuseUVs->At(v).x, diffuseUVs->At(v).y, 0, 0,
+ normals->At(v).x, normals->At(v).y, normals->At(v).z);
+ }
+ }
+ else
+ {
+ Models[i]->AddVertex(vertices->At(v).z, vertices->At(v).y, vertices->At(v).x, Color(255, 0, 0, 128),
+ 0, 0, 0, 0,
+ normals->At(v).x, normals->At(v).y, normals->At(v).z);
+ }
+ }
+
+ // Read the vertex indices for the triangles
+ const char* indexStr = pXmlModel->FirstChildElement("indices")->
+ FirstChild()->ToText()->Value();
+ UPInt stringLength = strlen(indexStr);
+
+ for(UPInt j = 0; j < stringLength;)
+ {
+ UPInt k = j + 1;
+ for(; k < stringLength; ++k)
+ {
+ if(indexStr[k] == ' ')
+ {
+ break;
+ }
+ }
+ char text[20];
+ for(UPInt l = 0; l < k - j; ++l)
+ {
+ text[l] = indexStr[j + l];
+ }
+ text[k - j] = '\0';
+ Models[i]->Indices.InsertAt(0, (unsigned short)atoi(text));
+ j = k + 1;
+ }
+
+ delete vertices;
+ delete normals;
+ delete diffuseUVs;
+ delete lightmapUVs;
+
+ pScene->World.Add(Models[i]);
+ pScene->Models.PushBack(Models[i]);
+ pXmlModel = pXmlModel->NextSiblingElement("model");
+ }
+ OVR_DEBUG_LOG(("Done."));
+
+ //load the collision models
+ OVR_DEBUG_LOG(("Loading collision models... "));
+ XMLElement* pXmlCollisionModel = pXmlDocument->FirstChildElement("scene")->FirstChildElement("collisionModels");
+ if (pXmlCollisionModel)
+ {
+ pXmlCollisionModel->QueryIntAttribute("count", &collisionModelCount);
+ pXmlCollisionModel = pXmlCollisionModel->FirstChildElement("collisionModel");
+ }
+
+ XMLElement* pXmlPlane = NULL;
+ for(int i = 0; i < collisionModelCount; ++i)
+ {
+ Ptr<CollisionModel> cm = *new CollisionModel();
+ int planeCount = 0;
+ pXmlCollisionModel->QueryIntAttribute("planeCount", &planeCount);
+
+ pXmlPlane = pXmlCollisionModel->FirstChildElement("plane");
+ for(int j = 0; j < planeCount; ++j)
+ {
+ Vector3f norm;
+ pXmlPlane->QueryFloatAttribute("nx", &norm.x);
+ pXmlPlane->QueryFloatAttribute("ny", &norm.y);
+ pXmlPlane->QueryFloatAttribute("nz", &norm.z);
+ float D;
+ pXmlPlane->QueryFloatAttribute("d", &D);
+ D -= 0.5f;
+ Planef p(norm.z, norm.y, norm.x * -1.0f, D);
+ cm->Add(p);
+ pXmlPlane = pXmlPlane->NextSiblingElement("plane");
+ }
+
+ pCollisions->PushBack(cm);
+ pXmlCollisionModel = pXmlCollisionModel->NextSiblingElement("collisionModel");
+ }
+ OVR_DEBUG_LOG(("done."));
+
+ //load the ground collision models
+ OVR_DEBUG_LOG(("Loading ground collision models..."));
+ pXmlCollisionModel = pXmlDocument->FirstChildElement("scene")->FirstChildElement("groundCollisionModels");
+ if (pXmlCollisionModel)
+ {
+ pXmlCollisionModel->QueryIntAttribute("count", &groundCollisionModelCount);
+ pXmlCollisionModel = pXmlCollisionModel->FirstChildElement("collisionModel");
+ }
+ pXmlPlane = NULL;
+ for(int i = 0; i < groundCollisionModelCount; ++i)
+ {
+ Ptr<CollisionModel> cm = *new CollisionModel();
+ int planeCount = 0;
+ pXmlCollisionModel->QueryIntAttribute("planeCount", &planeCount);
+
+ pXmlPlane = pXmlCollisionModel->FirstChildElement("plane");
+ for(int j = 0; j < planeCount; ++j)
+ {
+ Vector3f norm;
+ pXmlPlane->QueryFloatAttribute("nx", &norm.x);
+ pXmlPlane->QueryFloatAttribute("ny", &norm.y);
+ pXmlPlane->QueryFloatAttribute("nz", &norm.z);
+ float D;
+ pXmlPlane->QueryFloatAttribute("d", &D);
+ Planef p(norm.z, norm.y, norm.x * -1.0f, D);
+ cm->Add(p);
+ pXmlPlane = pXmlPlane->NextSiblingElement("plane");
+ }
+
+ pGroundCollisions->PushBack(cm);
+ pXmlCollisionModel = pXmlCollisionModel->NextSiblingElement("collisionModel");
+ }
+ OVR_DEBUG_LOG(("done."));
+ return true;
+}
+
+void XmlHandler::ParseVectorString(const char* str, OVR::Array<OVR::Vector3f> *array,
+ bool is2element)
+{
+ UPInt stride = is2element ? 2 : 3;
+ UPInt stringLength = strlen(str);
+ UPInt element = 0;
+ float v[3];
+
+ for(UPInt j = 0; j < stringLength;)
+ {
+ UPInt k = j + 1;
+ for(; k < stringLength; ++k)
+ {
+ if(str[k] == ' ')
+ {
+ break;
+ }
+ }
+ char text[20];
+ for(UPInt l = 0; l < k - j; ++l)
+ {
+ text[l] = str[j + l];
+ }
+ text[k - j] = '\0';
+ v[element] = (float)atof(text);
+
+ if(element == (stride - 1))
+ {
+ //we've got all the elements of our vertex, so store them
+ OVR::Vector3f vect;
+ vect.x = v[0];
+ vect.y = v[1];
+ vect.z = is2element ? 0.0f : v[2];
+ array->PushBack(vect);
+ }
+
+ j = k + 1;
+ element = (element + 1) % stride;
+ }
+}
+
+}} // OVR::Render
+
+#ifdef OVR_DEFINE_NEW
+#define new OVR_DEFINE_NEW
+#endif
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