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feat: Add API for controlling the scene (#15)
>[!WARNING] > Based on the following PR which should be merged first > - #13 **Goal:** To provide an API from JS that can be used to setup the scene and control the transform of the elements. (Most important) **Changes:** - **Camera:** - Renamed `lookAt` -> `lookAtCameraManipulator` Can be used to make camera look at camera manipulator - New `lookAt` function, which can be used to manually control the position, target and up vector of the camera - New `setLensProjection` & `setProjection` function to Control the lens configuration from JS - **⚠️ Note:** @mrousavy The user would also need to call this when the surface size changes (as we need to pass the aspect ratio to this function). Lets discuss in a quick meeting how to solve this best - **Engine:** - Renamed `createDefaultLight` -> `setIndirectLight`, only sets the indirect light from an FilamentBuffer now (decouples the function from setting a default directional light, which can be now configured by the user) - New `createLightEntity` Function to create a light with the configuration you want - Exposed `transformToUnitCube`. Pass an asset and it will transform the asset to fit into a unit cube - New `setEntityPosition`, `setEntityRotation` and `setEntityScale` to set or update an entities transform - `loadAsset` now returns a `FilamentAsset`. The asset can be used for various operations in the scene. --------- Co-authored-by: Marc Rousavy <me@mrousavy.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| // | ||
| // Created by Marc Rousavy on 22.02.24. | ||
| // | ||
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| #pragma once | ||
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| #include "jsi/EnumMapper.h" | ||
| #include <filament/Camera.h> | ||
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| namespace margelo { | ||
| using namespace filament; | ||
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| namespace EnumMapper { | ||
| static void convertJSUnionToEnum(const std::string& inUnion, Camera::Fov* outEnum) { | ||
| if (inUnion == "horizontal") | ||
| *outEnum = Camera::Fov::HORIZONTAL; | ||
| else if (inUnion == "vertical") | ||
| *outEnum = Camera::Fov::VERTICAL; | ||
| else | ||
| throw invalidUnion(inUnion); | ||
| } | ||
| static void convertEnumToJSUnion(Camera::Fov inEnum, std::string* outUnion) { | ||
| switch (inEnum) { | ||
| case filament::Camera::Fov::HORIZONTAL: | ||
| *outUnion = "horizontal"; | ||
| break; | ||
| case filament::Camera::Fov::VERTICAL: | ||
| *outUnion = "vertical"; | ||
| break; | ||
| default: | ||
| throw invalidEnum(inEnum); | ||
| } | ||
| } | ||
| } // namespace EnumMapper | ||
| } // namespace margelo |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,33 @@ | ||
| #include "FilamentAssetWrapper.h" | ||
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| #include <utils/Entity.h> | ||
| #include <utils/EntityInstance.h> | ||
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| namespace margelo { | ||
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| using namespace utils; | ||
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| void FilamentAssetWrapper::loadHybridMethods() { | ||
| registerHybridMethod("getRoot", &FilamentAssetWrapper::getRoot, this); | ||
| } | ||
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| /** | ||
| * Sets up a root transform on the current model to make it fit into a unit cube. | ||
| */ | ||
| void FilamentAssetWrapper::transformToUnitCube(TransformManager& transformManager) { | ||
| Aabb aabb = _asset->getBoundingBox(); | ||
| math::details::TVec3<float> center = aabb.center(); | ||
| math::details::TVec3<float> halfExtent = aabb.extent(); | ||
| float maxExtent = max(halfExtent) * 2.0f; | ||
| float scaleFactor = 2.0f / maxExtent; | ||
| math::mat4f transform = math::mat4f::scaling(scaleFactor) * math::mat4f::translation(-center); | ||
| EntityInstance<TransformManager> transformInstance = transformManager.getInstance(_asset->getRoot()); | ||
| transformManager.setTransform(transformInstance, transform); | ||
| } | ||
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| std::shared_ptr<EntityWrapper> FilamentAssetWrapper::getRoot() { | ||
| Entity rootEntity = _asset->getRoot(); | ||
| return std::make_shared<EntityWrapper>(rootEntity); | ||
| } | ||
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| } // namespace margelo |
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