// Platform skeleton for EterLib/GrpExpandedImageInstance.h (40250 EterLib/GrpExpandedImageInstance.cpp), generated by platform_stub.py.
// Every MT_PLATFORM_STUB() body is unimplemented: replace it with the platform implementation.
#include "EterLib/StdAfx.h"
#include "EterLib/GrpExpandedImageInstance.h"

#include "../PlatformStub.h"
#include "EterBase/CRC32.h"
#include "UIRenderCommands.h"

#include <cmath>

auto CGraphicExpandedImageInstance::Type() -> DWORD
{
	static DWORD type = GetCRC32("CGraphicExpandedImageInstance", sizeof("CGraphicExpandedImageInstance") - 1);
	return type;
}

CGraphicExpandedImageInstance::CGraphicExpandedImageInstance()
{
	Initialize();
}

CGraphicExpandedImageInstance::~CGraphicExpandedImageInstance()
{
	Destroy();
}

auto CGraphicExpandedImageInstance::Destroy() -> void
{
	CGraphicImageInstance::Destroy();
	Initialize();
}

auto CGraphicExpandedImageInstance::SetDepth(float depth) -> void
{
	m_fDepth = depth;
}

auto CGraphicExpandedImageInstance::SetOrigin() -> void
{
	m_v2Origin = D3DXVECTOR2(GetWidth() * 0.5f, GetHeight() * 0.5f);
}

auto CGraphicExpandedImageInstance::SetOrigin(float x, float y) -> void
{
	m_v2Origin = D3DXVECTOR2(x, y);
}

auto CGraphicExpandedImageInstance::SetRotation(float rotation) -> void
{
	m_fRotation = rotation;
}

auto CGraphicExpandedImageInstance::SetScale(float x, float y) -> void
{
	m_v2Scale = D3DXVECTOR2(x, y);
}

// In 40250, the arguments are fractions of the image size (uiToolTip gauges, SetPercentage).
auto CGraphicExpandedImageInstance::SetRenderingRect(float fLeft, float fTop, float fRight, float fBottom) -> void
{
	if (IsEmpty())
		return;

	float fWidth = float(GetWidth());
	float fHeight = float(GetHeight());

	m_RenderingRect.left = fWidth * fLeft;
	m_RenderingRect.top = fHeight * fTop;
	m_RenderingRect.right = fWidth * fRight;
	m_RenderingRect.bottom = fHeight * fBottom;
}

auto CGraphicExpandedImageInstance::SetRenderingMode(int mode) -> void
{
	m_iRenderingMode = mode;
}

auto CGraphicExpandedImageInstance::Initialize() -> void
{
	m_fDepth = 0;
	m_v2Origin = D3DXVECTOR2(0, 0);
	m_v2Scale = D3DXVECTOR2(1, 1);
	m_fRotation = 0;
	m_RenderingRect = {0, 0, 0, 0};
	m_iRenderingMode = RENDERING_MODE_NORMAL;
}

// 40250 GrpExpandedImageInstance.cpp:29-142. The vertex and texture-coordinate arithmetic is
// verbatim; the D3D stream/blend-state calls become one UIRenderCommand with the four vertices.
auto CGraphicExpandedImageInstance::OnRender() -> void
{
	CGraphicImage * pImage = m_roImage.GetPointer();
	CGraphicTexture * pTexture = pImage->GetTexturePointer();
	if (pTexture->GetWidth() <= 0 || pTexture->GetHeight() <= 0)
		return;

	const RECT& c_rRect = pImage->GetRectReference();
	float texReverseWidth = 1.0f / float(pTexture->GetWidth());
	float texReverseHeight = 1.0f / float(pTexture->GetHeight());
	float su = (c_rRect.left - m_RenderingRect.left) * texReverseWidth;
	float sv = (c_rRect.top - m_RenderingRect.top) * texReverseHeight;
	float eu = (c_rRect.left + m_RenderingRect.right + (c_rRect.right-c_rRect.left)) * texReverseWidth;
	float ev = (c_rRect.top + m_RenderingRect.bottom + (c_rRect.bottom-c_rRect.top)) * texReverseHeight;

	float x[4], y[4];
	for (int i = 0; i < 4; ++i)
	{
		x[i] = m_v2Position.x-0.5f;
		y[i] = m_v2Position.y-0.5f;
	}

	if (0.0f == m_fRotation)
	{
		float fimgWidth = float(pImage->GetWidth()) * m_v2Scale.x;
		float fimgHeight = float(pImage->GetHeight()) * m_v2Scale.y;

		x[0] -= m_RenderingRect.left;
		y[0] -= m_RenderingRect.top;
		x[1] += fimgWidth + m_RenderingRect.right;
		y[1] -= m_RenderingRect.top;
		x[2] -= m_RenderingRect.left;
		y[2] += fimgHeight + m_RenderingRect.bottom;
		x[3] += fimgWidth + m_RenderingRect.right;
		y[3] += fimgHeight + m_RenderingRect.bottom;
		// PORT: 40250 flips D3DRS_CULLMODE for a mirrored scale; the Godot canvas has no culling.
	}
	else
	{
		float fimgHalfWidth = float(pImage->GetWidth())/2.0f * m_v2Scale.x;
		float fimgHalfHeight = float(pImage->GetHeight())/2.0f * m_v2Scale.y;

		for (int i = 0; i < 4; ++i)
		{
			x[i] += m_v2Origin.x;
			y[i] += m_v2Origin.y;
		}

		float fRadian = D3DXToRadian(m_fRotation);
		x[0] += (-fimgHalfWidth*cosf(fRadian)) - (-fimgHalfHeight*sinf(fRadian));
		y[0] += (-fimgHalfWidth*sinf(fRadian)) + (-fimgHalfHeight*cosf(fRadian));
		x[1] += (+fimgHalfWidth*cosf(fRadian)) - (-fimgHalfHeight*sinf(fRadian));
		y[1] += (+fimgHalfWidth*sinf(fRadian)) + (-fimgHalfHeight*cosf(fRadian));
		x[2] += (-fimgHalfWidth*cosf(fRadian)) - (+fimgHalfHeight*sinf(fRadian));
		y[2] += (-fimgHalfWidth*sinf(fRadian)) + (+fimgHalfHeight*cosf(fRadian));
		x[3] += (+fimgHalfWidth*cosf(fRadian)) - (+fimgHalfHeight*sinf(fRadian));
		y[3] += (+fimgHalfWidth*sinf(fRadian)) + (+fimgHalfHeight*cosf(fRadian));
	}

	UIRenderAddImage(pTexture, x, y, su, sv, eu, ev, UIRenderColor(m_DiffuseColor), m_iRenderingMode);
}

auto CGraphicExpandedImageInstance::OnSetImagePointer() -> void
{
	if (!IsEmpty()) SetOrigin();
}

auto CGraphicExpandedImageInstance::OnIsType(DWORD type) -> BOOL
{
	return type == Type() || CGraphicImageInstance::OnIsType(type);
}

auto CGraphicExpandedImageInstance::CreateSystem(UINT) -> void
{
	MT_PLATFORM_STUB();
}

auto CGraphicExpandedImageInstance::DestroySystem() -> void
{
	MT_PLATFORM_STUB();
}

auto CGraphicExpandedImageInstance::New() -> CGraphicExpandedImageInstance *
{
	return new CGraphicExpandedImageInstance();
}

auto CGraphicExpandedImageInstance::Delete(CGraphicExpandedImageInstance *instance) -> void
{
	if (!instance) return;
	instance->Destroy();
	delete instance;
}

decltype(CGraphicExpandedImageInstance::ms_kPool) CGraphicExpandedImageInstance::ms_kPool{};