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use focal length from GLTF

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This commit is contained in:
Nick Fisher
2022-07-18 12:24:53 +10:00
parent d512ebd38f
commit ce177e7fbd
1 changed files with 9 additions and 14 deletions
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23
ios/src/FilamentViewer.cpp
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@@ -360,13 +360,9 @@ namespace polyvox
///
/// Sets the active camera to the GLTF camera specified by [name].
/// Blender export arranges cameras as follows
/// - parent node with global (?) matrix
/// --- child node with "camera" property set to camera node name
/// - camera node
/// We therefore find the first node where the "camera" property is equal to the requested name,
/// then use the parent transform matrix.
/// 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).
///
bool FilamentViewer::setCamera(const char *cameraName)
{
@@ -378,7 +374,7 @@ namespace polyvox
}
const utils::Entity* cameras = _asset->getCameraEntities();
Log("%zu cameras found in current asset", cameraName, count);
Log("%zu cameras found in current asset", count);
for(int i=0; i < count; i++) {
auto inst = _ncm->getInstance(cameras[i]);
@@ -386,15 +382,14 @@ namespace polyvox
Log("Camera %d : %s", i, name);
if (strcmp(name, cameraName) == 0) {
Camera* camera = _engine->createCamera(cameras[i]);
Camera* camera = _engine->getCameraComponent(cameras[i]);
_view->setCamera(camera);
const Viewport &vp = _view->getViewport();
const double aspect = (double)vp.width / vp.height;
// todo - pull focal length from gltf node
camera->setLensProjection(_cameraFocalLength, aspect, kNearPlane, kFarPlane);
_view->setCamera(camera);
Log("Camera focal length : %f aspect %f", camera->getFocalLength(), aspect);
camera->setScaling({1.0 / aspect, 1.0});
Log("Successfully set camera.");
return true;
}