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StaticModel.cpp
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StaticModel.cpp
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#include "StaticModel.h"
#include "StaticModelSurface.h"
#include "ivolumetest.h"
#include "iselectiontest.h"
#include "texturelib.h"
#include "ishaders.h"
#include "modelskin.h"
#include "ifilter.h"
#include "imodelsurface.h"
#include "VolumeIntersectionValue.h"
#include "math/Ray.h"
#include "BasicUndoMemento.h"
namespace model
{
StaticModel::StaticModel(const std::vector<StaticModelSurfacePtr>& surfaces) :
_scaleTransformed(1, 1, 1),
_scale(1, 1, 1),
_undoStateSaver(nullptr)
{
for (const auto& surface : surfaces)
{
auto& inserted = _surfaces.emplace_back(surface);
// Extend the model AABB to include each surface's AABB
_localAABB.includeAABB(inserted.surface->getAABB());
}
}
StaticModel::StaticModel(const StaticModel& other) :
_surfaces(other._surfaces.size()),
_scaleTransformed(other._scaleTransformed),
_scale(other._scale), // use scale of other model
_localAABB(other._localAABB),
_filename(other._filename),
_modelPath(other._modelPath),
_undoStateSaver(nullptr)
{
// Copy the other model's surfaces, but not its shaders, revert to default
for (std::size_t i = 0; i < other._surfaces.size(); ++i)
{
// Copy-construct the other surface, inheriting any applied scale
_surfaces[i].surface = std::make_shared<StaticModelSurface>(*(other._surfaces[i].surface));
_surfaces[i].originalSurface = other._surfaces[i].originalSurface;
_surfaces[i].surface->setActiveMaterial(_surfaces[i].surface->getDefaultMaterial());
}
}
void StaticModel::connectUndoSystem(IUndoSystem& undoSystem)
{
assert(_undoStateSaver == nullptr);
_undoStateSaver = undoSystem.getStateSaver(*this);
}
void StaticModel::disconnectUndoSystem(IUndoSystem& undoSystem)
{
assert(_undoStateSaver != nullptr);
_undoStateSaver = nullptr;
undoSystem.releaseStateSaver(*this);
}
void StaticModel::foreachVisibleSurface(const std::function<void(const Surface& s)>& func) const
{
for (const Surface& surface : _surfaces)
{
assert(surface.shader);
// Check if the surface's shader is filtered, if not then submit it for rendering
const MaterialPtr& surfaceShader = surface.shader->getMaterial();
if (surfaceShader && surfaceShader->isVisible())
{
func(surface);
}
}
}
void StaticModel::setRenderSystem(const RenderSystemPtr& renderSystem)
{
_renderSystem = renderSystem;
captureShaders();
}
std::string StaticModel::getFilename() const
{
return _filename;
}
void StaticModel::setFilename(const std::string& name)
{
_filename = name;
}
// Return vertex count of this model
int StaticModel::getVertexCount() const
{
int sum = 0;
for (const Surface& s : _surfaces)
{
sum += s.surface->getNumVertices();
}
return sum;
}
// Return poly count of this model
int StaticModel::getPolyCount() const
{
int sum = 0;
for (const Surface& s : _surfaces)
{
sum += s.surface->getNumTriangles();
}
return sum;
}
const IModelSurface& StaticModel::getSurface(unsigned surfaceNum) const
{
assert(surfaceNum >= 0 && surfaceNum < _surfaces.size());
return *(_surfaces[surfaceNum].surface);
}
// Apply the given skin to this model
void StaticModel::applySkin(const ModelSkin& skin)
{
// Apply the skin to each surface, then try to capture shaders
for (auto& s : _surfaces)
{
const std::string& defaultMaterial = s.surface->getDefaultMaterial();
const std::string& activeMaterial = s.surface->getActiveMaterial();
// Look up the remap for this surface's material name. If there is a remap
// change the Shader* to point to the new shader.
std::string remap = skin.getRemap(defaultMaterial);
if (!remap.empty() && remap != activeMaterial)
{
// Save the remapped shader name
s.surface->setActiveMaterial(remap);
}
else if (remap.empty() && activeMaterial != defaultMaterial)
{
// No remap, so reset our shader to the original unskinned shader
s.surface->setActiveMaterial(defaultMaterial);
}
}
captureShaders();
// greebo: Update the active material list after applying this skin
updateMaterialList();
}
void StaticModel::captureShaders()
{
auto renderSystem = _renderSystem.lock();
// Capture or release our shaders
for (auto& s : _surfaces)
{
if (renderSystem)
{
s.shader = renderSystem->capture(s.surface->getActiveMaterial());
}
else
{
s.shader.reset();
}
}
_sigShadersChanged.emit();
}
sigc::signal<void>& StaticModel::signal_ShadersChanged()
{
return _sigShadersChanged;
}
// Update the list of active materials
void StaticModel::updateMaterialList() const
{
_materialList.clear();
for (const auto& s : _surfaces)
{
_materialList.push_back(s.surface->getActiveMaterial());
}
}
// Return the list of active skins for this model
const StringList& StaticModel::getActiveMaterials() const
{
// If the material list is empty, populate it
if (_materialList.empty())
{
updateMaterialList();
}
// Return the list
return _materialList;
}
void StaticModel::testSelect(Selector& selector, SelectionTest& test, const Matrix4& localToWorld)
{
// Perform a volume intersection (AABB) check on each surface. For those
// that intersect, call the surface's own testSelection method to perform
// a proper selection test.
for (const auto& surface : _surfaces)
{
// Check volume intersection
if (test.getVolume().TestAABB(surface.surface->getAABB(), localToWorld) != VOLUME_OUTSIDE)
{
bool twoSided = surface.shader && surface.shader->getMaterial()->getCullType() == Material::CULL_NONE;
// Volume intersection passed, delegate the selection test
surface.surface->testSelect(selector, test, localToWorld, twoSided);
}
}
}
bool StaticModel::getIntersection(const Ray& ray, Vector3& intersection, const Matrix4& localToWorld)
{
Vector3 bestIntersection = ray.origin;
// Test each surface and take the nearest point to the ray origin
for (SurfaceList::iterator i = _surfaces.begin(); i != _surfaces.end(); ++i)
{
Vector3 surfaceIntersection;
if (i->surface->getIntersection(ray, surfaceIntersection, localToWorld))
{
// Test if this surface intersection is better than what we currently have
auto oldDistSquared = (bestIntersection - ray.origin).getLengthSquared();
auto newDistSquared = (surfaceIntersection - ray.origin).getLengthSquared();
if ((oldDistSquared == 0 && newDistSquared > 0) || newDistSquared < oldDistSquared)
{
bestIntersection = surfaceIntersection;
}
}
}
if ((bestIntersection - ray.origin).getLengthSquared() > 0)
{
intersection = bestIntersection;
return true;
}
else
{
return false;
}
}
const StaticModel::SurfaceList& StaticModel::getSurfaces() const
{
return _surfaces;
}
std::string StaticModel::getModelPath() const
{
return _modelPath;
}
void StaticModel::setModelPath(const std::string& modelPath)
{
_modelPath = modelPath;
}
void StaticModel::revertScale()
{
_scaleTransformed = _scale;
}
void StaticModel::evaluateScale(const Vector3& scale)
{
_scaleTransformed *= scale;
applyScaleToSurfaces();
}
void StaticModel::applyScaleToSurfaces()
{
_localAABB = AABB();
// Apply the scale to each surface
for (Surface& surf : _surfaces)
{
// Are we still using the original surface? If yes,
// it's now time to create a working copy
if (surf.surface == surf.originalSurface)
{
// Copy-construct the surface
surf.surface = std::make_shared<StaticModelSurface>(*surf.originalSurface);
}
// Apply the scale, on top of the original surface, this should save us from
// reverting the transformation each time the scale changes
surf.surface->applyScale(_scaleTransformed, *(surf.originalSurface));
// Extend the model AABB to include the surface's AABB
_localAABB.includeAABB(surf.surface->getAABB());
}
}
// Freeze transform, move the applied scale to the original model
void StaticModel::freezeScale()
{
undoSave();
// Apply the scale to each surface
_scale = _scaleTransformed;
}
void StaticModel::undoSave()
{
if (_undoStateSaver != nullptr)
{
_undoStateSaver->saveState();
}
}
IUndoMementoPtr StaticModel::exportState() const
{
return IUndoMementoPtr(new undo::BasicUndoMemento<Vector3>(_scale));
}
void StaticModel::importState(const IUndoMementoPtr& state)
{
undoSave();
_scale = std::static_pointer_cast< undo::BasicUndoMemento<Vector3> >(state)->data();
_scaleTransformed = _scale;
applyScaleToSurfaces();
}
const Vector3& StaticModel::getScale() const
{
return _scale;
}
void StaticModel::foreachSurface(const std::function<void(const StaticModelSurface&)>& func) const
{
for (const Surface& surf : _surfaces)
{
func(*surf.surface);
}
}
} // namespace