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add setFirstCamera method to FilamentViewer

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This commit is contained in:
Nick Fisher
2022-08-16 11:32:03 +10:00
parent 5c70d42f45
commit 3eef4e816e
2 changed files with 27 additions and 5 deletions
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31
ios/src/FilamentViewer.cpp
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@@ -154,7 +154,6 @@ FilamentViewer::FilamentViewer(void *layer, LoadResource loadResource,
// .castShadows(true)
.build(*_engine, _sun);
_scene->addEntity(_sun);
_sceneAssetLoader = new SceneAssetLoader(_loadResource,
_freeResource,
@@ -372,11 +371,27 @@ void FilamentViewer::removeAsset(SceneAsset *asset) {
mtx.unlock();
}
///
/// Sets the active camera to the first GLTF camera node found in the hierarchy.
/// Useful when your asset only has one camera.
///
bool FilamentViewer::setFirstCamera(SceneAsset *asset) {
size_t count = asset->getCameraEntityCount();
if (count == 0) {
Log("Failed, no cameras found in current asset.");
return false;
}
const utils::Entity *cameras = asset->getCameraEntities();
Log("%zu cameras found in asset", count);
auto inst = _ncm->getInstance(cameras[0]);
const char *name = _ncm->getName(inst);
return setCamera(asset, name);
}
///
/// Sets the active camera to the GLTF camera node specified by [name].
/// N.B. Blender will generally export a three-node hierarchy -
/// Camera1->Camera_Orientation->Camera2. The correct name will be the
/// grandchild (i.e. Camera2 in this scenario).
/// Camera1->Camera_Orientation->Camera2. The correct name will be the Camera_Orientation.
///
bool FilamentViewer::setCamera(SceneAsset *asset, const char *cameraName) {
Log("Attempting to set camera to %s.", cameraName);
@@ -401,8 +416,14 @@ bool FilamentViewer::setCamera(SceneAsset *asset, const char *cameraName) {
const Viewport &vp = _view->getViewport();
const double aspect = (double)vp.width / vp.height;
Log("Camera focal length : %f aspect %f", camera->getFocalLength(),
aspect);
const float aperture = camera->getAperture();
const float shutterSpeed = camera->getShutterSpeed();
const float sens = camera->getSensitivity();
// camera->setExposure(1.0f);
Log("Camera focal length : %f aspect %f aperture %f shutter %f sensitivity %f", camera->getFocalLength(),
aspect, aperture, shutterSpeed, sens);
camera->setScaling({1.0 / aspect, 1.0});
Log("Successfully set camera.");
return true;