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#include "Renderable.h"
#include "Renderer.h"
#include "RenderUtils.h"

const DirectX::XMFLOAT4 DEFAULT_COLOR(0.5f, 0.5f, 0.5f, 1.0f);

Renderable::Renderable(IRenderMesh& mesh, RenderMaterial& material) : m_mesh(mesh), m_scale(1, 1, 1), m_color(DEFAULT_COLOR), m_hidden(false), m_transform(PxIdentity)
// Add By Lixu Begin
, m_selected(false)
, m_depthTest(true)
, m_highlight(false)
// Add By Lixu End
{
	setMaterial(material);
}

void Renderable::setMaterial(RenderMaterial& material)
{
	material.addRelatedRenderable(this);
	m_materialInstance = material.getMaterialInstance(&m_mesh);
}

void Renderable::render(Renderer& renderer, bool depthStencilOnly) const
{
	if (!m_materialInstance->isValid())
	{
		PX_ALWAYS_ASSERT();
		return;
	}

	m_materialInstance->bind(*renderer.m_context, 0, depthStencilOnly);
	
	DirectX::XMFLOAT4 diffuseColor = getColor();
	DirectX::XMFLOAT4 specularColor = diffuseColor;
	float useDiffuseTexture = -1.0;
	float useSpecularTexture = -1.0;
	float useNormalTexture = -1.0;
	float specularShininess = 1.0;
	RenderMaterial& renderMaterial = m_materialInstance->getMaterial();
	std::string mName = renderMaterial.getMaterialName();
	if (mName != "")
	{
		float r, g, b, a;
		std::string texName;

		renderMaterial.getDiffuseColor(r, g, b, a);
		diffuseColor = DirectX::XMFLOAT4(r, g, b, a);
		renderMaterial.getSpecularColor(r, g, b, a);
		specularColor = DirectX::XMFLOAT4(r, g, b, a);
			
		texName = renderMaterial.getTextureFileName();
		if (texName != "" && !renderMaterial.isBadTexture())
		{
			useDiffuseTexture = 1.0;
		}

		texName = renderMaterial.getTextureFileName(RenderMaterial::TT_Specular);
		if (texName != "" && !renderMaterial.isBadTexture(RenderMaterial::TT_Specular))
		{
			useSpecularTexture = 1.0;
		}

		texName = renderMaterial.getTextureFileName(RenderMaterial::TT_Normal);
		if (texName != "" && !renderMaterial.isBadTexture(RenderMaterial::TT_Normal))
		{
			useNormalTexture = 1.0;
		}

		specularShininess = renderMaterial.getSpecularShininess();
	}

	float selected = -1.0;
	if (m_selected || m_highlight)
	{
		selected = 1.0;
	}

	// setup object CB
	{
		D3D11_MAPPED_SUBRESOURCE mappedResource;
		renderer.m_context->Map(renderer.m_objectCB, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
		Renderer::CBObject* objectBuffer = (Renderer::CBObject*)mappedResource.pData;
		objectBuffer->worldMatrix = PxMat44ToXMMATRIX(getModelMatrix());
		objectBuffer->diffuseColor = diffuseColor;
		objectBuffer->specularColor = specularColor;
		objectBuffer->useDiffuseTexture = useDiffuseTexture;
		objectBuffer->useSpecularTexture = useSpecularTexture;
		objectBuffer->useNormalTexture = useNormalTexture;
		objectBuffer->specularShininess = specularShininess;
		objectBuffer->selected = selected;
		renderer.m_context->Unmap(renderer.m_objectCB, 0);
	}

	m_mesh.render(*renderer.m_context);
}