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reimplement grid as SceneAsset

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This commit is contained in:
Nick Fisher
2024-11-30 16:01:25 +08:00
parent e43e1c9cbd
commit 1c5b5c890b
10 changed files with 245 additions and 132 deletions
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165
thermion_dart/native/src/GridOverlay.cpp
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@@ -1,31 +1,36 @@
#ifdef _WIN32
#define _USE_MATH_DEFINES
#include <cmath>
#endif
#include "scene/GridOverlay.hpp"
#include <filament/Engine.h>
#include <utils/Entity.h>
#include <utils/EntityManager.h>
#include <filament/RenderableManager.h>
#include <filament/TransformManager.h>
#include <gltfio/math.h>
#include "material/grid.h"
#include "scene/SceneManager.hpp"
#include "material/grid.h"
#include "Log.hpp"
namespace thermion
{
using namespace filament::gltfio;
GridOverlay::GridOverlay(Engine &engine) : _engine(engine)
{
auto &entityManager = EntityManager::get();
auto &transformManager = engine.getTransformManager();
createGrid();
createSphere();
_childEntities[0] = _gridEntity;
_childEntities[1] = _sphereEntity;
}
GridOverlay::~GridOverlay()
{
auto &rm = _engine.getRenderableManager();
auto &tm = _engine.getTransformManager();
rm.destroy(_sphereEntity);
rm.destroy(_gridEntity);
tm.destroy(_sphereEntity);
tm.destroy(_gridEntity);
_engine.destroy(_sphereEntity);
_engine.destroy(_gridEntity);
_engine.destroy(_materialInstance);
_engine.destroy(_material);
}
void GridOverlay::createGrid()
{
const int gridSize = 100;
const float gridSpacing = 1.0f;
int vertexCount = (gridSize + 1) * 4; // 2 axes, 2 vertices per line
@@ -61,10 +66,10 @@ namespace thermion
.vertexCount(vertexCount)
.bufferCount(1)
.attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
.build(engine);
.build(_engine);
vb->setBufferAt(engine, 0, VertexBuffer::BufferDescriptor(gridVertices, vertexCount * sizeof(filament::math::float3), [](void *buffer, size_t size, void *)
{ delete[] static_cast<float *>(buffer); }));
vb->setBufferAt(_engine, 0, VertexBuffer::BufferDescriptor(gridVertices, vertexCount * sizeof(math::float3), [](void *buffer, size_t size, void *)
{ delete[] static_cast<float *>(buffer); }));
uint32_t *gridIndices = new uint32_t[vertexCount];
for (uint32_t i = 0; i < vertexCount; ++i)
@@ -75,22 +80,22 @@ namespace thermion
auto ib = IndexBuffer::Builder()
.indexCount(vertexCount)
.bufferType(IndexBuffer::IndexType::UINT)
.build(engine);
.build(_engine);
ib->setBuffer(engine, IndexBuffer::BufferDescriptor(
gridIndices, vertexCount * sizeof(uint32_t),
[](void *buffer, size_t size, void *)
{ delete[] static_cast<uint32_t *>(buffer); }));
ib->setBuffer(_engine, IndexBuffer::BufferDescriptor(
gridIndices,
vertexCount * sizeof(uint32_t),
[](void *buffer, size_t size, void *)
{ delete[] static_cast<uint32_t *>(buffer); }));
_gridEntity = entityManager.create();
_gridEntity = utils::EntityManager::get().create();
_material = Material::Builder()
.package(GRID_PACKAGE, GRID_GRID_SIZE)
.build(engine);
.build(_engine);
_materialInstance = _material->createInstance();
_materialInstance->setParameter("maxDistance", 50.0f); // Adjust as needed
_materialInstance->setParameter("color", math::float3{0.05f, 0.05f, 0.05f}); // Gray color for the grid
_materialInstance->setParameter("maxDistance", 50.0f);
_materialInstance->setParameter("color", math::float3{0.05f, 0.05f, 0.05f});
RenderableManager::Builder(1)
.boundingBox({{-gridSize * gridSpacing / 2, 0, -gridSize * gridSpacing / 2},
@@ -102,12 +107,16 @@ namespace thermion
.culling(true)
.receiveShadows(false)
.castShadows(false)
.build(engine, _gridEntity);
.build(_engine, _gridEntity);
}
void GridOverlay::createSphere()
{
const float sphereRadius = 0.05f;
const int sphereSegments = 16;
const int sphereRings = 16;
vertexCount = (sphereRings + 1) * (sphereSegments + 1);
int vertexCount = (sphereRings + 1) * (sphereSegments + 1);
int indexCount = sphereRings * sphereSegments * 6;
math::float3 *vertices = new math::float3[vertexCount];
@@ -158,22 +167,23 @@ namespace thermion
.vertexCount(vertexCount)
.bufferCount(1)
.attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
.build(engine);
.build(_engine);
sphereVb->setBufferAt(engine, 0, VertexBuffer::BufferDescriptor(vertices, vertexCount * sizeof(math::float3), [](void *buffer, size_t size, void *)
{ delete[] static_cast<math::float3 *>(buffer); }));
sphereVb->setBufferAt(_engine, 0, VertexBuffer::BufferDescriptor(vertices, vertexCount * sizeof(math::float3), [](void *buffer, size_t size, void *)
{ delete[] static_cast<math::float3 *>(buffer); }));
auto sphereIb = IndexBuffer::Builder()
.indexCount(indexCount)
.bufferType(IndexBuffer::IndexType::UINT)
.build(engine);
.build(_engine);
sphereIb->setBuffer(engine, IndexBuffer::BufferDescriptor(
indices, indexCount * sizeof(uint32_t),
[](void *buffer, size_t size, void *)
{ delete[] static_cast<uint32_t *>(buffer); }));
sphereIb->setBuffer(_engine, IndexBuffer::BufferDescriptor(
indices,
indexCount * sizeof(uint32_t),
[](void *buffer, size_t size, void *)
{ delete[] static_cast<uint32_t *>(buffer); }));
_sphereEntity = entityManager.create();
_sphereEntity = utils::EntityManager::get().create();
RenderableManager::Builder(1)
.boundingBox({{-sphereRadius, -sphereRadius, -sphereRadius},
@@ -184,19 +194,70 @@ namespace thermion
.culling(true)
.receiveShadows(false)
.castShadows(false)
.build(engine, _sphereEntity);
.build(_engine, _sphereEntity);
}
void GridOverlay::destroy()
SceneAsset *GridOverlay::createInstance(MaterialInstance **materialInstances, size_t materialInstanceCount)
{
auto &rm = _engine.getRenderableManager();
auto &tm = _engine.getTransformManager();
rm.destroy(_sphereEntity);
rm.destroy(_gridEntity);
tm.destroy(_sphereEntity);
tm.destroy(_gridEntity);
_engine.destroy(_sphereEntity);
_engine.destroy(_gridEntity);
auto instance = std::make_unique<GridOverlay>(_engine);
auto *raw = instance.get();
_instances.push_back(std::move(instance));
return reinterpret_cast<SceneAsset*>(raw);
}
void GridOverlay::addAllEntities(Scene *scene)
{
scene->addEntity(_gridEntity);
scene->addEntity(_sphereEntity);
}
void GridOverlay::removeAllEntities(Scene *scene)
{
scene->remove(_gridEntity);
scene->remove(_sphereEntity);
}
void GridOverlay::setPriority(RenderableManager &rm, int priority)
{
auto gridInstance = rm.getInstance(_gridEntity);
rm.setPriority(gridInstance, priority);
auto sphereInstance = rm.getInstance(_sphereEntity);
rm.setPriority(sphereInstance, priority);
}
void GridOverlay::setLayer(RenderableManager &rm, int layer)
{
auto gridInstance = rm.getInstance(_gridEntity);
rm.setLayerMask(gridInstance, 0xFF, 1u << (uint8_t)layer);
auto sphereInstance = rm.getInstance(_sphereEntity);
rm.setLayerMask(sphereInstance, 0xFF, 1u << (uint8_t)layer);
}
SceneAsset *GridOverlay::getInstanceByEntity(utils::Entity entity)
{
for (auto &instance : _instances)
{
if (instance->_gridEntity == entity || instance->_sphereEntity == entity)
{
return instance.get();
}
}
return nullptr;
}
SceneAsset *GridOverlay::getInstanceAt(size_t index)
{
return _instances[index].get();
}
const Entity *GridOverlay::getChildEntities()
{
return _childEntities;
}
Entity GridOverlay::findEntityByName(const char *name)
{
return Entity(); // Not implemented
}
} // namespace thermion