From 85c987473713c7a9f6462a955cd28a5c94ed3d51 Mon Sep 17 00:00:00 2001
From: Jaswant Panchumarti <jaswant.panchumarti@kitware.com>
Date: Fri, 3 May 2024 12:55:05 -0400
Subject: [PATCH] Add resetCamera method in vtkWasmSceneManager

---
 Web/WebAssembly/vtkWasmSceneManager.cxx          | 13 +++++++++++++
 Web/WebAssembly/vtkWasmSceneManager.h            | 16 ++++++++++++----
 Web/WebAssembly/vtkWasmSceneManagerEmBinding.cxx |  8 ++++++++
 3 files changed, 33 insertions(+), 4 deletions(-)

diff --git a/Web/WebAssembly/vtkWasmSceneManager.cxx b/Web/WebAssembly/vtkWasmSceneManager.cxx
index b7d0c5ccc41..5dbd3265866 100644
--- a/Web/WebAssembly/vtkWasmSceneManager.cxx
+++ b/Web/WebAssembly/vtkWasmSceneManager.cxx
@@ -8,6 +8,7 @@
 
 #include "vtkRenderWindow.h"
 #include "vtkRenderWindowInteractor.h"
+#include "vtkRenderer.h"
 
 VTK_ABI_NAMESPACE_BEGIN
 //-------------------------------------------------------------------------------
@@ -52,6 +53,18 @@ bool vtkWasmSceneManager::Render(vtkTypeUInt32 identifier)
   return false;
 }
 
+//-------------------------------------------------------------------------------
+bool vtkWasmSceneManager::ResetCamera(vtkTypeUInt32 identifier)
+{
+  auto object = this->GetObjectAtId(identifier);
+  if (auto renderer = vtkRenderer::SafeDownCast(object))
+  {
+    renderer->ResetCamera();
+    return true;
+  }
+  return false;
+}
+
 //-------------------------------------------------------------------------------
 bool vtkWasmSceneManager::StartEventLoop(vtkTypeUInt32 identifier)
 {
diff --git a/Web/WebAssembly/vtkWasmSceneManager.h b/Web/WebAssembly/vtkWasmSceneManager.h
index 493fa82a25b..d386a267f7f 100644
--- a/Web/WebAssembly/vtkWasmSceneManager.h
+++ b/Web/WebAssembly/vtkWasmSceneManager.h
@@ -33,7 +33,7 @@ public:
    * Set the size of the `vtkRenderWindow` object at `identifier` to
    * the supplied dimesions.
    *
-   * Returns `true` if the obejct at `identifier` is a `vtkRenderWindow`
+   * Returns `true` if the object at `identifier` is a `vtkRenderWindow`
    * with a `vtkRenderWindowInteractor` attached to it,
    * `false` otherwise.
    */
@@ -42,15 +42,23 @@ public:
   /**
    * Render the `vtkRenderWindow` object at `identifier`.
    *
-   * Returns `true` if the obejct at `identifier` is a `vtkRenderWindow`
+   * Returns `true` if the object at `identifier` is a `vtkRenderWindow`
    * `false` otherwise.
    */
   bool Render(vtkTypeUInt32 identifier);
 
+  /**
+   * Reset the active camera of the `vtkRenderer` object at `identifier`.
+   *
+   * Returns `true` if the object at `identifier` is a `vtkRenderer`
+   * `false` otherwise.
+   */
+  bool ResetCamera(vtkTypeUInt32 identifier);
+
   /**
    * Start event loop of the `vtkRenderWindowInteractor` object at `identifier`.
    *
-   * Returns `true` if the obejct at `identifier` is a `vtkRenderWindowInteractor`
+   * Returns `true` if the object at `identifier` is a `vtkRenderWindowInteractor`
    * `false` otherwise.
    */
   bool StartEventLoop(vtkTypeUInt32 identifier);
@@ -58,7 +66,7 @@ public:
   /**
    * Stop event loop of the `vtkRenderWindowInteractor` object at `identifier`.
    *
-   * Returns `true` if the obejct at `identifier` is a `vtkRenderWindowInteractor`
+   * Returns `true` if the object at `identifier` is a `vtkRenderWindowInteractor`
    * `false` otherwise.
    */
   bool StopEventLoop(vtkTypeUInt32 identifier);
diff --git a/Web/WebAssembly/vtkWasmSceneManagerEmBinding.cxx b/Web/WebAssembly/vtkWasmSceneManagerEmBinding.cxx
index dcd19e40564..39be3f6788b 100644
--- a/Web/WebAssembly/vtkWasmSceneManagerEmBinding.cxx
+++ b/Web/WebAssembly/vtkWasmSceneManagerEmBinding.cxx
@@ -177,6 +177,13 @@ bool render(vtkTypeUInt32 identifier)
   return Manager->Render(identifier);
 }
 
+//-------------------------------------------------------------------------------
+bool resetCamera(vtkTypeUInt32 identifier)
+{
+  CHECK_INIT;
+  return Manager->ResetCamera(identifier);
+}
+
 //-------------------------------------------------------------------------------
 bool startEventLoop(vtkTypeUInt32 identifier)
 {
@@ -249,6 +256,7 @@ EMSCRIPTEN_BINDINGS(vtkWasmSceneManager)
 
   function("setSize", ::setSize);
   function("render", ::render);
+  function("resetCamera", ::resetCamera);
 
   function("startEventLoop", ::startEventLoop);
   function("stopEventLoop", ::stopEventLoop);
-- 
GitLab