Adding WIP 3D UI example

FeatureExamples/CPlusPlus/Source/HelloGui3D.cpp

@@ -0,0 +1,247 @@
+//
+// Copyright (c) 2014-2017, THUNDERBEAST GAMES LLC All rights reserved
+// Copyright (c) 2008-2016 the Urho3D project.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#include <Atomic/Core/CoreEvents.h>
+#include <Atomic/Core/ProcessUtils.h>
+#include <Atomic/Input/Input.h>
+#include <Atomic/Graphics/Graphics.h>
+#include <Atomic/Graphics/Camera.h>
+#include <Atomic/Graphics/Graphics.h>
+#include <Atomic/Graphics/Material.h>
+#include <Atomic/Graphics/Model.h>
+#include <Atomic/Graphics/Octree.h>
+#include <Atomic/Graphics/Renderer.h>
+#include <Atomic/Graphics/StaticModel.h>
+#include <Atomic/Graphics/Texture2D.h>
+#include <Atomic/Graphics/Technique.h>
+#include <Atomic/UI/UI.h>
+#include <Atomic/UI/UIEvents.h>
+#include <Atomic/UI/UIFontDescription.h>
+#include <Atomic/UI/UIView.h>
+#include <Atomic/UI/UILayout.h>
+#include <Atomic/UI/UICheckBox.h>
+#include <Atomic/UI/UITextField.h>
+#include <Atomic/UI/UIButton.h>
+#include <Atomic/UI/UIEditField.h>
+#include <Atomic/UI/UIWindow.h>
+#include <Atomic/Resource/ResourceCache.h>
+#include <Atomic/Scene/Scene.h>
+
+#include "FeatureExamples.h"
+#include "HelloGui3D.h"
+
+#include <Atomic/DebugNew.h>
+
+HelloGui3D::HelloGui3D(Context* context) :
+    Sample(context)
+{
+}
+
+void HelloGui3D::Start()
+{
+    // Execute base class startup
+    Sample::Start();
+
+    SimpleCreateInstructions();
+
+    // Create "Hello GUI"
+    CreateUI();
+
+    // Create the scene content
+    CreateScene();
+
+    SetupViewport();
+
+    // Finally subscribe to the update event. Note that by subscribing events at this point we have already missed some events
+    // like the ScreenMode event sent by the Graphics subsystem when opening the application window. To catch those as well we
+    // could subscribe in the constructor instead.
+    SubscribeToEvents();
+
+    // Set the mouse mode to use in the sample
+    Sample::InitMouseMode(MM_FREE);
+}
+
+void HelloGui3D::SetupViewport()
+{
+    Renderer* renderer = GetSubsystem<Renderer>();
+
+    // Set up a viewport to the Renderer subsystem so that the 3D scene can be seen. We need to define the scene and the camera
+    // at minimum. Additionally we could configure the viewport screen size and the rendering path (eg. forward / deferred) to
+    // use, but now we just use full screen and default render path configured in the engine command line options
+    SharedPtr<Viewport> viewport(new Viewport(context_, scene_, cameraNode_->GetComponent<Camera>()));
+    renderer->SetViewport(0, viewport);
+}
+
+
+void HelloGui3D::MoveCamera(float timeStep)
+{
+    Input* input = GetSubsystem<Input>();
+
+    // Movement speed as world units per second
+    const float MOVE_SPEED = 20.0f;
+    // Mouse sensitivity as degrees per pixel
+    const float MOUSE_SENSITIVITY = 0.1f;
+
+    // Use this frame's mouse motion to adjust camera node yaw and pitch. Clamp the pitch between -90 and 90 degrees
+    IntVector2 mouseMove = input->GetMouseMove();
+    yaw_ += MOUSE_SENSITIVITY * mouseMove.x_;
+    pitch_ += MOUSE_SENSITIVITY * mouseMove.y_;
+    pitch_ = Clamp(pitch_, -90.0f, 90.0f);
+
+    // Construct new orientation for the camera scene node from yaw and pitch. Roll is fixed to zero
+    cameraNode_->SetRotation(Quaternion(pitch_, yaw_, 0.0f));
+
+    // Read WASD keys and move the camera scene node to the corresponding direction if they are pressed
+    // Use the Translate() function (default local space) to move relative to the node's orientation.
+    if (input->GetKeyDown(KEY_W))
+        cameraNode_->Translate(Vector3::FORWARD * MOVE_SPEED * timeStep);
+    if (input->GetKeyDown(KEY_S))
+        cameraNode_->Translate(Vector3::BACK * MOVE_SPEED * timeStep);
+    if (input->GetKeyDown(KEY_A))
+        cameraNode_->Translate(Vector3::LEFT * MOVE_SPEED * timeStep);
+    if (input->GetKeyDown(KEY_D))
+        cameraNode_->Translate(Vector3::RIGHT * MOVE_SPEED * timeStep);
+}
+
+
+void HelloGui3D::CreateScene()
+{
+    ResourceCache* cache = GetSubsystem<ResourceCache>();
+
+    scene_ = new Scene(context_);
+
+    // Create the Octree component to the scene. This is required before adding any drawable components, or else nothing will
+    // show up. The default octree volume will be from (-1000, -1000, -1000) to (1000, 1000, 1000) in world coordinates; it
+    // is also legal to place objects outside the volume but their visibility can then not be checked in a hierarchically
+    // optimizing manner
+    scene_->CreateComponent<Octree>();
+
+    SharedPtr<Material> material(new Material(context_));
+    material->SetTechnique(0, cache->GetResource<Technique>("Techniques/Diff.xml"));
+    material->SetTexture(Atomic::TU_DIFFUSE, view3D_->GetRenderTexture());
+
+    // Create a child scene node (at world origin) and a StaticModel component into it. Set the StaticModel to show a simple
+    // plane mesh with a "stone" material. Note that naming the scene nodes is optional. Scale the scene node larger
+    // (100 x 100 world units)
+    Node* planeNode = scene_->CreateChild("Plane");
+    planeNode->SetScale(Vector3(5.0f, 1.0f, 5.0f));
+    StaticModel* planeObject = planeNode->CreateComponent<StaticModel>();
+    planeObject->SetModel(cache->GetResource<Model>("Models/Plane.mdl"));
+    planeObject->SetMaterial(material);
+
+    // Create a directional light to the world so that we can see something. The light scene node's orientation controls the
+    // light direction; we will use the SetDirection() function which calculates the orientation from a forward direction vector.
+    // The light will use default settings (white light, no shadows)
+    Node* lightNode = scene_->CreateChild("DirectionalLight");
+    lightNode->SetDirection(Vector3(0.6f, -1.0f, 0.8f)); // The direction vector does not need to be normalized
+    Light* light = lightNode->CreateComponent<Light>();
+    light->SetLightType(LIGHT_DIRECTIONAL);
+
+    // Create a scene node for the camera, which we will move around
+    // The camera will use default settings (1000 far clip distance, 45 degrees FOV, set aspect ratio automatically)
+    cameraNode_ = scene_->CreateChild("Camera");
+    cameraNode_->CreateComponent<Camera>();
+
+    // Set an initial position for the camera scene node above the plane
+    cameraNode_->SetPosition(Vector3(0.0f, 5.0f, 0.0f));
+}
+
+
+void HelloGui3D::CreateUI()
+{
+    int size = 192;
+
+    view3D_ = new UIView(context_, true);
+    view3D_->SetRenderToTexture(true, size, size);
+
+    UILayout* layout = new UILayout(context_);
+    layout->SetAxis(UI_AXIS_Y);
+
+    UICheckBox* checkBox = new UICheckBox(context_);
+    checkBox->SetId("Checkbox");
+
+    layout->AddChild(checkBox);
+
+    UIButton* button = new UIButton(context_);
+    button->SetText("Button");
+    button->SetId("Button");
+
+    layout->AddChild(button);
+
+    UIEditField* edit = new UIEditField(context_);
+    layout->AddChild(edit);
+    edit->SetId("EditField");
+
+    window_ = new UIWindow(context_);
+    window_->SetSettings( (UI_WINDOW_SETTINGS) (UI_WINDOW_SETTINGS_TITLEBAR | UI_WINDOW_SETTINGS_CLOSE_BUTTON));
+
+    window_->SetText("Hello Atomic GUI!");
+
+    window_->AddChild(layout);
+
+    window_->SetSize(size, size);
+
+    view3D_->AddChild(window_);
+    window_->Center();
+}
+
+void HelloGui3D::SubscribeToEvents()
+{
+    // Subscribe HandleUpdate() function for processing update events
+    SubscribeToEvent(E_UPDATE, ATOMIC_HANDLER(HelloGui3D, HandleUpdate));
+
+    SubscribeToEvent(E_WIDGETEVENT, ATOMIC_HANDLER(HelloGui3D, HandleWidgetEvent));
+    SubscribeToEvent(E_WIDGETDELETED, ATOMIC_HANDLER(HelloGui3D, HandleWidgetDeleted));
+}
+
+void HelloGui3D::HandleWidgetEvent(StringHash eventType, VariantMap& eventData)
+{
+    using namespace WidgetEvent;
+
+    if (eventData[P_TYPE] == UI_EVENT_TYPE_CLICK)
+    {
+        UIWidget* widget = static_cast<UIWidget*>(eventData[P_TARGET].GetPtr());
+        if (widget)
+        {
+            window_->SetText(ToString("Hello: %s", widget->GetId().CString()));
+        }
+
+    }
+}
+
+void HelloGui3D::HandleWidgetDeleted(StringHash eventType, VariantMap& eventData)
+{
+    BackToSelector();
+}
+
+
+void HelloGui3D::HandleUpdate(StringHash eventType, VariantMap& eventData)
+{
+    using namespace Update;
+
+    // Take the frame time step, which is stored as a float
+    float timeStep = eventData[P_TIMESTEP].GetFloat();
+
+    // Move the camera, scale movement with time step
+    MoveCamera(timeStep);
+}

FeatureExamples/CPlusPlus/Source/HelloGui3D.h

@@ -0,0 +1,65 @@
+//
+// Copyright (c) 2014-2017, THUNDERBEAST GAMES LLC All rights reserved
+// Copyright (c) 2008-2016 the Urho3D project.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#pragma once
+
+#include "Sample.h"
+
+namespace Atomic
+{
+class UIWindow;
+}
+
+class HelloGui3D : public Sample
+{
+    ATOMIC_OBJECT(HelloGui3D, Sample)
+
+public:
+    /// Construct.
+    HelloGui3D(Context* context);
+
+    /// Setup after engine initialization and before running the main loop.
+    virtual void Start();
+
+protected:
+
+private:
+
+    void CreateScene();
+    void CreateUI();
+    /// Set up a viewport for displaying the scene.
+    void SetupViewport();
+    /// Subscribe to application-wide logic update events.
+    void SubscribeToEvents();
+    /// Handle the logic update event.
+    void HandleUpdate(StringHash eventType, VariantMap& eventData);
+    /// Read input and moves the camera.
+    void MoveCamera(float timeStep);
+
+    void HandleWidgetEvent(StringHash eventType, VariantMap& eventData);
+
+    void HandleWidgetDeleted(StringHash eventType, VariantMap& eventData);
+
+    WeakPtr<UIView> view3D_;
+    WeakPtr<UIWindow> window_;
+};

FeatureExamples/CPlusPlus/Source/SampleSelector.cpp

@@ -35,6 +35,7 @@
 
 #include "HelloWorld.h"
 #include "HelloGui.h"
+#include "HelloGui3D.h"
 #include "HelloSystemUi.h"
 #include "2DSprite.h"
 #include "Physics2D.h"
@@ -76,6 +77,7 @@ SampleSelector::SampleSelector(Context* context) :
     const char* examples[] = {
         "Hello World",
         "Hello GUI",
+        "Hello GUI 3D",
         "Hello SystemUI",
         "Render to Texture",
         "2D Sprite",
@@ -159,6 +161,10 @@ void SampleSelector::HandleWidgetEvent(StringHash eventType, VariantMap& eventDa
         {
             currentSample_ = new HelloGui(context_);
         }
+        else if (exampleName == "Hello GUI 3D")
+        {
+            currentSample_ = new HelloGui3D(context_);
+        }
         else if (exampleName == "Hello SystemUI")
         {
             currentSample_ = new HelloSystemUi(context_);