$#include "DecalSet.h"

/// %Decal renderer component.
class DecalSet : public Drawable
{
public:
    /// Set material. The material should use a small negative depth bias to avoid Z-fighting.
    void SetMaterial(Material* material);
    /// Set maximum number of decal vertices.
    void SetMaxVertices(unsigned num);
    /// Set maximum number of decal vertex indices.
    void SetMaxIndices(unsigned num);
    /// Add a decal at world coordinates, using a target drawable's geometry for reference. If the decal needs to move with the target, the decal component should be created to the target's node. Return true if successful.
    bool AddDecal(Drawable* target, const Vector3& worldPosition, const Quaternion& worldRotation, float size, float aspectRatio, float depth, const Vector2& topLeftUV, const Vector2& bottomRightUV, float timeToLive = 0.0f, float normalCutoff = 0.1f, unsigned subGeometry = M_MAX_UNSIGNED);
    /// Remove n oldest decals.
    void RemoveDecals(unsigned num);
    /// Remove all decals.
    void RemoveAllDecals();
    
    /// Return material.
    Material* GetMaterial() const;
    /// Return number of decals.
    unsigned GetNumDecals() const { return decals_.Size(); }
    /// Retur number of vertices in the decals.
    unsigned GetNumVertices() const { return numVertices_; }
    /// Retur number of vertex indices in the decals.
    unsigned GetNumIndices() const { return numIndices_; }
    /// Return maximum number of decal vertices.
    unsigned GetMaxVertices() const { return maxVertices_; }
    /// Return maximum number of decal vertex indices.
    unsigned GetMaxIndices() const { return maxIndices_; }
};