AtomicGameEngine/Source/Atomic/Atomic2D/Sprite2D.h

//
// Copyright (c) 2008-2017 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 "../Resource/Resource.h"

namespace Atomic
{

class SpriteSheet2D;
class Texture2D;

/// Sprite.
class ATOMIC_API Sprite2D : public Resource
{
    ATOMIC_OBJECT(Sprite2D, Resource);

public:
    /// Construct.
    Sprite2D(Context* context);
    /// Destruct.
    virtual ~Sprite2D();
    /// Register object factory.
    static void RegisterObject(Context* context);

    /// Load resource from stream. May be called from a worker thread. Return true if successful.
    virtual bool BeginLoad(Deserializer& source);
    /// Finish resource loading. Always called from the main thread. Return true if successful.
    virtual bool EndLoad();

    /// Set texture.
    void SetTexture(Texture2D* texture);
    /// Set rectangle.
    void SetRectangle(const IntRect& rectangle);
    /// Set hot spot.
    void SetHotSpot(const Vector2& hotSpot);
    /// Set offset.
    void SetOffset(const IntVector2& offset);
    /// Set texture edge offset in pixels. This affects the left/right and top/bottom edges equally to prevent edge sampling artifacts. Default 0.
    void SetTextureEdgeOffset(float offset);
    /// Set sprite sheet.
    void SetSpriteSheet(SpriteSheet2D* spriteSheet);

    /// Return texture.
    Texture2D* GetTexture() const { return texture_; }

    /// Return rectangle.
    const IntRect& GetRectangle() const { return rectangle_; }

    /// Return hot spot.
    const Vector2& GetHotSpot() const { return hotSpot_; }

    /// Return offset.
    const IntVector2& GetOffset() const { return offset_; }

    /// Return texture edge offset.
    float GetTextureEdgeOffset() const { return edgeOffset_; }

    /// Return sprite sheet.
    SpriteSheet2D* GetSpriteSheet() const { return spriteSheet_; }


    /// Return draw rectangle.
    bool GetDrawRectangle(Rect& rect, bool flipX = false, bool flipY = false) const;
    /// Return draw rectangle with custom hot spot.
    bool GetDrawRectangle(Rect& rect, const Vector2& hotSpot, bool flipX = false, bool flipY = false) const;
    /// Return texture rectangle.
    bool GetTextureRectangle(Rect& rect, bool flipX = false, bool flipY = false) const;

    /// Save sprite to ResourceRef.
    static ResourceRef SaveToResourceRef(Sprite2D* sprite);
    /// Load sprite from ResourceRef.
    static Sprite2D* LoadFromResourceRef(Object* object, const ResourceRef& value);

private:
    /// Texture.
    SharedPtr<Texture2D> texture_;
    /// Rectangle.
    IntRect rectangle_;
    /// Hot spot.
    Vector2 hotSpot_;
    /// Offset (for trimmed sprite).
    IntVector2 offset_;
    /// Sprite sheet.
    WeakPtr<SpriteSheet2D> spriteSheet_;
    /// Texture used while loading.
    SharedPtr<Texture2D> loadTexture_;
    /// Offset to fix texture edge bleeding.
    float edgeOffset_;
};

}