Graphics/Sprite: Allows to set sprite corner color

Former-commit-id: 0b892e363a4fbb18c729d289f543403d897b03c0 [formerly 28fcd5a7269c63b1f8c4c8c80c82e5dce9e17d1b] [formerly f8022fe7d864a6c1773c4e19843d7fc46590d328 [formerly 33fbfb6cd1700a3e05bc82875546cd57cfe6f6aa]]
Former-commit-id: 3ef8f144f07c0cf7666b59cdcc135fc74348caf9 [formerly 8bae7631b9aaf2565ec52d68f9c0c1a7a81dc69f]
Former-commit-id: 6eba237772ab4773180e3a86e9fe4f9b6b8e348d

include/Nazara/Graphics/Sprite.hpp

@@ -37,12 +37,14 @@ namespace Nz
 			void AddToRenderQueue(AbstractRenderQueue* renderQueue, const InstanceData& instanceData) const override;
 
 			inline const Color& GetColor() const;
+			inline const Color& GetCornerColor(RectCorner corner) const;
 			inline const MaterialRef& GetMaterial() const;
 			inline const Vector3f& GetOrigin() const;
 			inline const Vector2f& GetSize() const;
 			inline const Rectf& GetTextureCoords() const;
 
 			inline void SetColor(const Color& color);
+			inline void SetCornerColor(RectCorner corner, const Color& color);
 			inline void SetDefaultMaterial();
 			inline void SetMaterial(MaterialRef material, bool resizeSprite = true);
 			inline void SetOrigin(const Vector3f& origin);
@@ -65,6 +67,7 @@ namespace Nz
 			static bool Initialize();
 			static void Uninitialize();
 
+			std::array<Color, 4> m_cornerColor;
 			Color m_color;
 			MaterialRef m_material;
 			Rectf m_textureCoords;

include/Nazara/Graphics/Sprite.inl

@@ -18,6 +18,9 @@ namespace Nz
 	m_size(64.f, 64.f),
 	m_origin(Nz::Vector3f::Zero())
 	{
+		for (Color& color : m_cornerColor)
+			color = Color::White;
+
 		SetDefaultMaterial();
 	}
 
@@ -62,14 +65,35 @@ namespace Nz
 
 	/*!
 	* \brief Gets the color of the sprite
+	*
+	* This is the global color of the sprite, independent from corner colors
+	*
 	* \return Current color
+	*
+	* \see GetCornerColor
+	* \see SetColor
 	*/
-
 	inline const Color& Sprite::GetColor() const
 	{
 		return m_color;
 	}
 
+	/*!
+	* \brief Gets the color setup on a corner of the sprite
+	*
+	* \return Current color
+	*
+	* \param corner Corner of the sprite to query
+	*
+	* \see SetCornerColor
+	*/
+	inline const Color& Sprite::GetCornerColor(RectCorner corner) const
+	{
+		NazaraAssert(corner < m_cornerColor.size(), "Invalid corner");
+
+		return m_cornerColor[corner];
+	}
+
 	/*!
 	* \brief Gets the material of the sprite
 	* \return Current material
@@ -105,18 +129,21 @@ namespace Nz
 	* \brief Gets the texture coordinates of the sprite
 	* \return Current texture coordinates
 	*/
-
 	inline const Rectf& Sprite::GetTextureCoords() const
 	{
 		return m_textureCoords;
 	}
 
 	/*!
-	* \brief Sets the color of the billboard
+	* \brief Sets the global color of the sprite
 	*
-	* \param color Color for the billboard
+	* This is independent from the corner color of the sprite
+	*
+	* \param color Color for the sprite
+	*
+	* \see GetColor
+	* \see SetCornerColor
 	*/
-
 	inline void Sprite::SetColor(const Color& color)
 	{
 		m_color = color;
@@ -124,6 +151,26 @@ namespace Nz
 		InvalidateVertices();
 	}
 
+	/*!
+	* \brief Sets a color for a corner of the sprite
+	*
+	* This is independent from the sprite global color, which gets multiplied by the corner color when rendering the sprite.
+	*
+	* \param corner Corner of the sprite to set
+	* \param color Color for the sprite
+	*
+	* \see GetCornerColor
+	* \see SetColor
+	*/
+	inline void Sprite::SetCornerColor(RectCorner corner, const Color& color)
+	{
+		NazaraAssert(corner < m_cornerColor.size(), "Invalid corner");
+
+		m_cornerColor[corner] = color;
+
+		InvalidateVertices();
+	}
+
 	/*!
 	* \brief Sets the default material of the sprite (just default material)
 	*/

src/Nazara/Graphics/Sprite.cpp

@@ -49,7 +49,6 @@ namespace Nz
 	*
 	* \param instanceData Data of the instance
 	*/
-
 	void Sprite::UpdateData(InstanceData* instanceData) const
 	{
 		instanceData->data.resize(4 * sizeof(VertexStruct_XYZ_Color_UV));
@@ -61,19 +60,19 @@ namespace Nz
 
 		Vector3f origin(m_origin.x, -m_origin.y, m_origin.z);
 
-		*colorPtr++ = m_color;
+		*colorPtr++ = m_color * m_cornerColor[RectCorner_LeftTop];
 		*posPtr++ = instanceData->transformMatrix.Transform(Vector3f(-origin));
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_LeftTop);
 
-		*colorPtr++ = m_color;
+		*colorPtr++ = m_color * m_cornerColor[RectCorner_RightTop];
 		*posPtr++ = instanceData->transformMatrix.Transform(m_size.x*Vector3f::Right() - origin);
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_RightTop);
 
-		*colorPtr++ = m_color;
+		*colorPtr++ = m_color * m_cornerColor[RectCorner_LeftBottom];
 		*posPtr++ = instanceData->transformMatrix.Transform(m_size.y*Vector3f::Down() - origin);
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_LeftBottom);
 
-		*colorPtr++ = m_color;
+		*colorPtr++ = m_color * m_cornerColor[RectCorner_RightBottom];
 		*posPtr++ = instanceData->transformMatrix.Transform(m_size.x*Vector3f::Right() + m_size.y*Vector3f::Down() - origin);
 		*texCoordPtr++ = m_textureCoords.GetCorner(RectCorner_RightBottom);
 	}