//------------------------------------------------------------
//------------------------------------------------------------
void SpriteComponent::OnRenderSnapshot(RenderSnapshot& in_renderSnapshot) noexcept
{
Vector2 frameCenter;
Vector2 frameSize;
if(m_textureAtlas != nullptr && m_hashedTextureAtlasId > 0)
{
CalcFrameCentreAndSize(frameCenter, frameSize);
}
else if(mpMaterial != nullptr && mpMaterial->GetTexture() != nullptr)
{
auto texture = mpMaterial->GetTexture().get();
frameSize = m_sizePolicyDelegate(m_originalSize, Vector2((f32)texture->GetDimensions().x, (f32)texture->GetDimensions().y));
}
UVs transformedUVs = m_uvs;
if(m_flippedHorizontally == true && m_flippedVertically == true)
{
transformedUVs = UVs::FlipDiagonally(transformedUVs);
}
else if(m_flippedHorizontally == true)
{
transformedUVs = UVs::FlipHorizontally(transformedUVs);
}
else if(m_flippedVertically == true)
{
transformedUVs = UVs::FlipVertically(transformedUVs);
}
const auto& transform = GetEntity()->GetTransform();
auto renderDynamicMesh = SpriteMeshBuilder::Build(in_renderSnapshot.GetFrameAllocator(), Vector3(frameCenter, 0.0f), frameSize, transformedUVs, m_colour, m_originAlignment);
auto boundingSphere = Sphere::Transform(renderDynamicMesh->GetBoundingSphere(), transform.GetWorldPosition(), transform.GetWorldScale());
in_renderSnapshot.AddRenderObject(RenderObject(GetMaterial()->GetRenderMaterialGroup(), renderDynamicMesh.get(), transform.GetWorldTransform(), boundingSphere, false, RenderLayer::k_standard));
in_renderSnapshot.AddRenderDynamicMesh(std::move(renderDynamicMesh));
}
//-----------------------------------------------------------
/// The image from the texture atlas will have potentially
/// been cropped by the tool. This will affect the sprites
/// position within the uncropped image and we need to
/// account for that when positioning the corners
//-----------------------------------------------------------
void SpriteComponent::UpdateVertexPositions()
{
Core::Vector2 frameCenter;
Core::Vector2 frameSize;
if(m_textureAtlas != nullptr && m_hashedTextureAtlasId > 0)
{
CalcFrameCentreAndSize(frameCenter, frameSize);
}
else if(mpMaterial != nullptr && mpMaterial->GetTexture() != nullptr)
{
auto texture = mpMaterial->GetTexture().get();
frameSize = m_sizePolicyDelegate(m_originalSize, Core::Vector2((f32)texture->GetWidth(), (f32)texture->GetHeight()));
}
const Core::Matrix4& worldTransform = GetEntity()->GetTransform().GetWorldTransform();
Core::Vector2 halfFrameSize(frameSize.x * 0.5f, frameSize.y * 0.5f);
Core::Vector2 alignedPosition = -GetAnchorPoint(m_originAlignment, halfFrameSize);
Core::Vector4 vertexCentre(alignedPosition.x + frameCenter.x, alignedPosition.y + frameCenter.y, 0.0f, 1.0f);
//TL
Core::Vector4 vertexOffset(-halfFrameSize.x, halfFrameSize.y, 0.0f, 0.0f);
m_spriteData.sVerts[(u32)SpriteBatch::Verts::k_topLeft].vPos = (vertexCentre + vertexOffset) * worldTransform;
//TR
vertexOffset.x = halfFrameSize.x;
vertexOffset.y = halfFrameSize.y;
m_spriteData.sVerts[(u32)SpriteBatch::Verts::k_topRight].vPos = (vertexCentre + vertexOffset) * worldTransform;
//BL
vertexOffset.x = -halfFrameSize.x;
vertexOffset.y = -halfFrameSize.y;
m_spriteData.sVerts[(u32)SpriteBatch::Verts::k_bottomLeft].vPos = (vertexCentre + vertexOffset) * worldTransform;
//BR
vertexOffset.x = halfFrameSize.x;
vertexOffset.y = -halfFrameSize.y;
m_spriteData.sVerts[(u32)SpriteBatch::Verts::k_bottomRight].vPos = (vertexCentre + vertexOffset) * worldTransform;
}
