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internal: store bounding box with SceneAsset rather than recalculating from renderables

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This commit is contained in:
Nick Fisher
2025-01-07 12:02:44 +08:00
parent 124eed0264
commit 0e5253f7b3
12 changed files with 78 additions and 25 deletions
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1
thermion_dart/native/include/c_api/TSceneAsset.h
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@@ -21,6 +21,7 @@ extern "C"
EMSCRIPTEN_KEEPALIVE TSceneAsset *SceneAsset_getInstance(TSceneAsset *tSceneAsset, int index);
EMSCRIPTEN_KEEPALIVE size_t SceneAsset_getInstanceCount(TSceneAsset *tSceneAsset);
EMSCRIPTEN_KEEPALIVE TSceneAsset * SceneAsset_createInstance(TSceneAsset *asset, TMaterialInstance **materialInstances, int materialInstanceCount);
EMSCRIPTEN_KEEPALIVE Aabb3 SceneAsset_getBoundingBox(TSceneAsset *asset);
#ifdef __cplusplus
}

6
thermion_dart/native/include/scene/GeometrySceneAsset.hpp
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@@ -122,6 +122,10 @@ namespace thermion
return Entity(); // not currently implemented
}
const filament::Aabb getBoundingBox() const override {
return _boundingBox;
}
static std::unique_ptr<GeometrySceneAsset> create(
float *vertices, uint32_t numVertices,
float *normals, uint32_t numNormals,
@@ -136,7 +140,7 @@ namespace thermion
VertexBuffer *_vertexBuffer = nullptr;
IndexBuffer *_indexBuffer = nullptr;
std::vector<MaterialInstance*> _materialInstances;
Box _boundingBox;
Aabb _boundingBox;
GeometrySceneAsset *_instanceOwner = std::nullptr_t();
utils::Entity _entity;
RenderableManager::PrimitiveType _primitiveType;

7
thermion_dart/native/include/scene/Gizmo.hpp
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@@ -1,6 +1,7 @@
#pragma once
#include <utils/Entity.h>
#include <filament/Box.h>
#include <filament/Engine.h>
#include <filament/Material.h>
#include <filament/MaterialInstance.h>
@@ -145,6 +146,10 @@ namespace thermion
math::mat4f getRotationForAxis(Gizmo::Axis axis);
const filament::Aabb getBoundingBox() const override {
return _boundingBox;
}
private:
SceneAsset *_source;
Engine *_engine;
@@ -161,6 +166,8 @@ namespace thermion
std::vector<utils::Entity> _entities;
std::vector<MaterialInstance *> _materialInstances;
filament::Aabb _boundingBox;
GizmoPickResultType getPickResult(utils::Entity entity)
{
if (entity.isNull())

4
thermion_dart/native/include/scene/GltfSceneAsset.hpp
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@@ -167,6 +167,10 @@ namespace thermion
return entities[0];
}
const filament::Aabb getBoundingBox() const override {
return _asset->getBoundingBox();
}
private:
gltfio::FilamentAsset *_asset;
gltfio::AssetLoader *_assetLoader;

4
thermion_dart/native/include/scene/GltfSceneAssetInstance.hpp
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@@ -159,7 +159,9 @@ namespace thermion
}
}
const filament::Aabb getBoundingBox() const override {
return _instance->getBoundingBox();
}
private:
filament::Engine *_engine;

4
thermion_dart/native/include/scene/GridOverlay.hpp
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@@ -48,6 +48,10 @@ public:
const Entity* getChildEntities() override;
Entity findEntityByName(const char* name) override;
const filament::Aabb getBoundingBox() const override {
return filament::Aabb();
}
private:
Engine& _engine;
utils::Entity _gridEntity;

8
thermion_dart/native/include/scene/SceneAsset.hpp
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@@ -2,10 +2,12 @@
#include <memory>
#include <utils/Entity.h>
#include <gltfio/FilamentAsset.h>
#include <filament/Scene.h>
#include <gltfio/FilamentAsset.h>
#include <math.h>
#include <utils/Entity.h>
#include "CustomGeometry.hpp"
#include "Log.hpp"
@@ -51,6 +53,8 @@ class SceneAsset {
virtual void setPriority(RenderableManager& rm, int mask) = 0;
virtual void setLayer(RenderableManager& rm, int layer) = 0;
virtual const filament::Aabb getBoundingBox() const = 0;
};

6
thermion_dart/native/src/c_api/TSceneAsset.cpp
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@@ -101,6 +101,12 @@ extern "C"
return reinterpret_cast<TSceneAsset *>(instance);
}
EMSCRIPTEN_KEEPALIVE Aabb3 SceneAsset_getBoundingBox(TSceneAsset *tSceneAsset) {
auto *asset = reinterpret_cast<SceneAsset*>(tSceneAsset);
auto box = asset->getBoundingBox();
return Aabb3{box.center().x, box.center().y, box.center().z, box.extent().x, box.extent().y, box.extent().z};
}
#ifdef __cplusplus
}

9
thermion_dart/native/src/scene/GeometrySceneAsset.cpp
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@@ -31,7 +31,6 @@ namespace thermion
_vertexBuffer(vertexBuffer),
_indexBuffer(indexBuffer),
_primitiveType(primitiveType),
_boundingBox(boundingBox),
_instanceOwner(instanceOwner)
{
_materialInstances.insert(_materialInstances.begin(), materialInstances, materialInstances + materialInstanceCount);
@@ -39,11 +38,15 @@ namespace thermion
_entity = utils::EntityManager::get().create();
RenderableManager::Builder builder(1);
builder.boundingBox(_boundingBox)
builder.boundingBox(boundingBox)
.geometry(0, _primitiveType, _vertexBuffer, _indexBuffer)
.culling(true)
.receiveShadows(true)
.castShadows(true);
_boundingBox.min = boundingBox.getMin();
_boundingBox.max = boundingBox.getMax();
for (int i = 0; i < materialInstanceCount; i++)
{
builder.material(i, materialInstances[i]);
@@ -83,7 +86,7 @@ namespace thermion
materialInstances,
materialInstanceCount,
_primitiveType,
_boundingBox,
filament::Box().set(_boundingBox.min, _boundingBox.max),
this);
auto *raw = instance.get();
_instances.push_back(std::move(instance));

3
thermion_dart/native/src/scene/GltfSceneAsset.cpp
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@@ -26,7 +26,10 @@ namespace thermion
}
TRACE("Creating instance %d", instanceNumber);
auto instance = _asset->getAssetInstances()[instanceNumber];
instance->recomputeBoundingBoxes();
auto bb = instance->getBoundingBox();
TRACE("Instance bounding box center (%f,%f,%f), extent (%f,%f,%f)", bb.center().x, bb.center().y, bb.center().z, bb.extent().x,bb.extent().y,bb.extent().z);
instance->getAnimator()->updateBoneMatrices();
auto& rm = _engine->getRenderableManager();