// Platform skeleton for EterLib/GrpScreen.h (40250 EterLib/GrpScreen.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/GrpScreen.h"
#include "EterLib/StateManager.h"
#include "EterLib/Camera.h"

#include "../PlatformStub.h"
#include "UIRenderCommands.h"
#include <algorithm>

// 40250 GrpScreen.cpp:838
CScreen::CScreen()
{
}

CScreen::~CScreen()
{
}

auto CScreen::ClearDepthBuffer() -> void
{
	if (ms_lpd3dDevice)
		ms_lpd3dDevice->Clear(0L, NULL, D3DCLEAR_ZBUFFER, ms_clearColor, ms_clearDepth, ms_clearStencil);
}

auto CScreen::Clear() -> void
{
	if (ms_lpd3dDevice)
		ms_lpd3dDevice->Clear(0L, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, ms_clearColor, ms_clearDepth, ms_clearStencil);
}

// 40250 GrpScreen.cpp:691. CPythonApplication::Process brackets the frame's render with Begin/End; only
// inside the scene does CStateManager hand transforms to the recording device.
bool CScreen::Begin()
{
	assert(ms_lpd3dDevice != NULL);
	ResetFaceCount();

	if (!STATEMANAGER.BeginScene())
	{
		Tracenf("BeginScene FAILED\n");
		return false;
	}

	return true;
}

// 40250 GrpScreen.cpp:705
void CScreen::End()
{
	STATEMANAGER.EndScene();
}

auto CScreen::Show(HWND) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::Show(RECT *) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::Show(RECT *, HWND) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderLine2d(float sx, float sy, float ex, float ey, float) -> void
{
	UIRenderAdd({UIRenderCommand::Line, sx, sy, ex, ey, ms_diffuseColor});
}

auto CScreen::RenderBox2d(float sx, float sy, float ex, float ey, float) -> void
{
	// 40250's four line pairs, including its one-pixel extension of the bottom edge.
	UIRenderAdd({UIRenderCommand::Line, sx, sy, ex, sy, ms_diffuseColor});
	UIRenderAdd({UIRenderCommand::Line, sx, sy, sx, ey, ms_diffuseColor});
	UIRenderAdd({UIRenderCommand::Line, ex, sy, ex, ey, ms_diffuseColor});
	UIRenderAdd({UIRenderCommand::Line, sx, ey, ex + 1.0f, ey, ms_diffuseColor});
}

auto CScreen::RenderBar2d(float sx, float sy, float ex, float ey, float) -> void
{
	UIRenderAdd({UIRenderCommand::Bar, sx, sy, ex, ey, ms_diffuseColor});
}

auto CScreen::RenderGradationBar2d(float sx, float sy, float ex, float ey, DWORD start, DWORD end, float) -> void
{
	if (sx == ex || sy == ey)
		return;
	UIRenderCommand command{UIRenderCommand::GradientBar, sx, sy, ex, ey, start};
	command.end_argb = end;
	UIRenderAdd(std::move(command));
}

auto CScreen::RenderCircle2d(float, float, float, float, int) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderCircle3d(float, float, float, float, int) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderLine3d(float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderBox3d(float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderBar3d(float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderBar3d(const D3DXVECTOR3 *) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderGradationBar3d(float, float, float, float, float, float, DWORD, DWORD) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderLineCube(float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderCube(float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderCube(float, float, float, float, float, float, D3DXMATRIX) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderTextureBox(float, float, float, float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderBillboard(D3DXVECTOR3 *, D3DXCOLOR &) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::DrawMinorGrid(float, float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::DrawGrid(float, float, float, float, float, float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderD3DXMesh(LPD3DXMESH, const D3DXMATRIX *, float, float, float, float, D3DFILLMODE) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderSphere(const D3DXMATRIX *, float, float, float, float, D3DFILLMODE) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::RenderCylinder(const D3DXMATRIX *, float, float, float, float, float, D3DFILLMODE) -> void
{
	MT_PLATFORM_STUB();
}

// 40250 GrpScreen.cpp
void CScreen::SetColorOperation()
{
	STATEMANAGER.SetTexture(0, NULL);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLORARG1,	D3DTA_DIFFUSE);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLOROP,	D3DTOP_SELECTARG1);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_ALPHAOP,	D3DTOP_DISABLE);
	STATEMANAGER.SetTextureStageState(1, D3DTSS_COLOROP,	D3DTOP_DISABLE);
	STATEMANAGER.SetTextureStageState(1, D3DTSS_ALPHAOP,	D3DTOP_DISABLE);
}

// 40250 GrpScreen.cpp
void CScreen::SetDiffuseOperation()
{
	STATEMANAGER.SetTexture(0, NULL);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLORARG1,	D3DTA_TEXTURE);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLORARG2,	D3DTA_DIFFUSE);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLOROP,	D3DTOP_MODULATE);

	STATEMANAGER.SetTextureStageState(1, D3DTSS_COLOROP,	D3DTOP_DISABLE);
	STATEMANAGER.SetTextureStageState(1, D3DTSS_ALPHAOP,	D3DTOP_DISABLE);
}

// 40250 GrpScreen.cpp
void CScreen::SetBlendOperation()
{
	STATEMANAGER.SetTexture(0, NULL);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLORARG1,	D3DTA_TEXTURE);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLORARG2,	D3DTA_CURRENT);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_COLOROP,	D3DTOP_MODULATE);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_ALPHAARG1,	D3DTA_TEXTURE);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_ALPHAARG2,	D3DTA_CURRENT);
	STATEMANAGER.SetTextureStageState(0, D3DTSS_ALPHAOP,	D3DTOP_MODULATE);
	STATEMANAGER.SetTextureStageState(1, D3DTSS_COLOROP,	D3DTOP_DISABLE);
	STATEMANAGER.SetTextureStageState(1, D3DTSS_ALPHAOP,	D3DTOP_DISABLE);
}

auto CScreen::SetOneColorOperation(D3DXCOLOR &) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::SetAddColorOperation(D3DXCOLOR &) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::SetDiffuseColor(DWORD color) -> void
{
	ms_diffuseColor = color;
}

auto CScreen::SetDiffuseColor(float r, float g, float b, float a) -> void
{
	auto channel = [](float value) -> DWORD {
		return static_cast<DWORD>(std::clamp(value, 0.0f, 1.0f) * 255.0f + 0.5f);
	};
	ms_diffuseColor = (channel(a) << 24) | (channel(r) << 16) | (channel(g) << 8) | channel(b);
}

auto CScreen::SetClearColor(float, float, float, float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::SetClearDepth(float) -> void
{
	MT_PLATFORM_STUB();
}

auto CScreen::SetClearStencil(DWORD) -> void
{
	MT_PLATFORM_STUB();
}

// 40250 GrpScreen.cpp:487, verbatim: the pick ray through the cursor.
void CScreen::SetCursorPosition(int x, int y, int hres, int vres)
{
	D3DXVECTOR3 v;
	v.x = -(((2.0f * x) / hres) - 1) / ms_matProj._11;
	v.y = (((2.0f * y) / vres) - 1) / ms_matProj._22;
	v.z = 1.0f;

    D3DXMATRIX matViewInverse=ms_matInverseView;
    //D3DXMatrixInverse(&matViewInverse, NULL, &ms_matView);

    ms_vtPickRayDir.x = v.x * matViewInverse._11 +
						v.y * matViewInverse._21 +
						v.z * matViewInverse._31;

    ms_vtPickRayDir.y = v.x * matViewInverse._12 +
						v.y * matViewInverse._22 +
						v.z * matViewInverse._32;

    ms_vtPickRayDir.z = v.x * matViewInverse._13 +
						v.y * matViewInverse._23 +
						v.z * matViewInverse._33;

    ms_vtPickRayOrig.x = matViewInverse._41;
    ms_vtPickRayOrig.y = matViewInverse._42;
    ms_vtPickRayOrig.z = matViewInverse._43;

	ms_Ray.SetStartPoint(ms_vtPickRayOrig);
	ms_Ray.SetDirection(-ms_vtPickRayDir, 51200.0f);
}

auto CScreen::GetCursorPosition(float * px, float * py, float * pz) -> bool
{
	if (!GetCursorXYPosition(px, py)) return false;
	if (!GetCursorZPosition(pz)) return false;
	return true;
}

auto CScreen::GetCursorXYPosition(float * px, float * py) -> bool
{
	D3DXVECTOR3 v3Eye = CCameraManager::Instance().GetCurrentCamera()->GetEye();

	TPosition posVertices[4];
	posVertices[0] = TPosition(v3Eye.x - 90000000.0f, v3Eye.y + 90000000.0f, 0.0f);
	posVertices[1] = TPosition(v3Eye.x - 90000000.0f, v3Eye.y - 90000000.0f, 0.0f);
	posVertices[2] = TPosition(v3Eye.x + 90000000.0f, v3Eye.y + 90000000.0f, 0.0f);
	posVertices[3] = TPosition(v3Eye.x + 90000000.0f, v3Eye.y - 90000000.0f, 0.0f);

	static const WORD sc_awFillRectIndices[6] = { 0, 2, 1, 2, 3, 1, };

	float u, v, t;
	for (int i = 0; i < 2; ++i)
	{
		if (IntersectTriangle(ms_vtPickRayOrig, ms_vtPickRayDir,
		                      posVertices[sc_awFillRectIndices[i * 3]],
		                      posVertices[sc_awFillRectIndices[i * 3 + 1]],
		                      posVertices[sc_awFillRectIndices[i * 3 + 2]],
		                      &u, &v, &t))
		{
			*px = u;
			*py = v;
			return true;
		}
	}
	return false;
}

auto CScreen::GetCursorZPosition(float * pz) -> bool
{
	D3DXVECTOR3 v3Eye = CCameraManager::Instance().GetCurrentCamera()->GetEye();

	TPosition posVertices[4];
	posVertices[0] = TPosition(v3Eye.x - 90000000.0f, 0.0f, v3Eye.z + 90000000.0f);
	posVertices[1] = TPosition(v3Eye.x - 90000000.0f, 0.0f, v3Eye.z - 90000000.0f);
	posVertices[2] = TPosition(v3Eye.x + 90000000.0f, 0.0f, v3Eye.z + 90000000.0f);
	posVertices[3] = TPosition(v3Eye.x + 90000000.0f, 0.0f, v3Eye.z - 90000000.0f);

	static const WORD sc_awFillRectIndices[6] = { 0, 2, 1, 2, 3, 1, };

	float u, v, t;
	for (int i = 0; i < 2; ++i)
	{
		if (IntersectTriangle(ms_vtPickRayOrig, ms_vtPickRayDir,
		                      posVertices[sc_awFillRectIndices[i * 3]],
		                      posVertices[sc_awFillRectIndices[i * 3 + 1]],
		                      posVertices[sc_awFillRectIndices[i * 3 + 2]],
		                      &u, &v, &t))
		{
			*pz = t;
			return true;
		}
	}
	return false;
}

auto CScreen::GetPickingPosition(float t, float * x, float * y, float * z) -> void
{
	*x = ms_vtPickRayOrig.x + ms_vtPickRayDir.x * t;
	*y = ms_vtPickRayOrig.y + ms_vtPickRayDir.y * t;
	*z = ms_vtPickRayOrig.z + ms_vtPickRayDir.z * t;
}

// 40250 GrpScreen.cpp:749-779.
void CScreen::ProjectPosition(float x, float y, float z, float * pfX, float * pfY)
{
	D3DXVECTOR3 Input(x, y, z);
	D3DXVECTOR3 Output;
	D3DXVec3Project(&Output, &Input, &ms_Viewport, &ms_matProj, &ms_matView, &ms_matIdentity);

	*pfX = Output.x;
	*pfY = Output.y;
}

void CScreen::ProjectPosition(float x, float y, float z, float * pfX, float * pfY, float * pfZ)
{
	D3DXVECTOR3 Input(x, y, z);
	D3DXVECTOR3 Output;
	D3DXVec3Project(&Output, &Input, &ms_Viewport, &ms_matProj, &ms_matView, &ms_matIdentity);

	*pfX = Output.x;
	*pfY = Output.y;
	*pfZ = Output.z;
}

void CScreen::UnprojectPosition(float x, float y, float z, float * pfX, float * pfY, float * pfZ)
{
	D3DXVECTOR3 Input(x, y, z);
	D3DXVECTOR3 Output;
	D3DXVec3Unproject(&Output, &Input, &ms_Viewport, &ms_matProj, &ms_matView, &ms_matIdentity);

	*pfX = Output.x;
	*pfY = Output.y;
	*pfZ = Output.z;
}

auto CScreen::IsLostDevice() -> BOOL
{
	MT_PLATFORM_STUB();
	return mt_platform_stub_return<BOOL>();
}

auto CScreen::RestoreDevice() -> BOOL
{
	MT_PLATFORM_STUB();
	return mt_platform_stub_return<BOOL>();
}

auto CScreen::BuildViewFrustum() -> void
{
	CCamera* pkCamera = CCameraManager::Instance().GetCurrentCamera();
	if (!pkCamera)
		return;
	const D3DXVECTOR3& c_rv3Eye = pkCamera->GetEye();
	const D3DXVECTOR3& c_rv3View = pkCamera->GetView();
	auto vv = ms_matView * ms_matProj;
	ms_frustum.BuildViewFrustum2(
		vv,
		ms_fNearY,
		ms_fFarY,
		ms_fFieldOfView,
		ms_fAspect,
		c_rv3Eye, c_rv3View);
}

auto CScreen::Identity() -> void
{
	STATEMANAGER.SetTransform(D3DTS_WORLD, &ms_matIdentity);
}

decltype(CScreen::ms_diffuseColor) CScreen::ms_diffuseColor{};

decltype(CScreen::ms_clearColor) CScreen::ms_clearColor{};

decltype(CScreen::ms_clearStencil) CScreen::ms_clearStencil{};

decltype(CScreen::ms_clearDepth) CScreen::ms_clearDepth{};

decltype(CScreen::ms_frustum) CScreen::ms_frustum{};