/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company.

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").

Doom 3 BFG Edition Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/

#pragma hdrstop
#include "precompiled.h"

#include "DeviceContext.h"
#include "Window.h"
#include "UserInterfaceLocal.h"
#include "RenderWindow.h"

// NO LONGER SUPPORTED!
//
// D3 could render a 3D model in a subrect of a full screen
// GUI for the main menus, but we have cut that ability so
// we don't need to deal with offset viewports on all platforms.

idRenderWindow::idRenderWindow( idUserInterfaceLocal* g ) : idWindow( g )
{
	gui = g;
	CommonInit();
}

idRenderWindow::~idRenderWindow()
{
	renderSystem->FreeRenderWorld( world );
}

void idRenderWindow::CommonInit()
{
	world = renderSystem->AllocRenderWorld();
	needsRender = true;
	lightOrigin = idVec4( -128.0f, 0.0f, 0.0f, 1.0f );
	lightColor = idVec4( 1.0f, 1.0f, 1.0f, 1.0f );
	modelOrigin.Zero();
	viewOffset = idVec4( -128.0f, 0.0f, 0.0f, 1.0f );
	modelAnim = NULL;
	animLength = 0;
	animEndTime = -1;
	modelDef = -1;
	updateAnimation = true;
}


void idRenderWindow::BuildAnimation( int time )
{

	if( !updateAnimation )
	{
		return;
	}
	
	if( animName.Length() && animClass.Length() )
	{
		worldEntity.numJoints = worldEntity.hModel->NumJoints();
		worldEntity.joints = ( idJointMat* )Mem_Alloc16( SIMD_ROUND_JOINTS( worldEntity.numJoints ) * sizeof( *worldEntity.joints ), TAG_JOINTMAT );
		modelAnim = gameEdit->ANIM_GetAnimFromEntityDef( animClass, animName );
		if( modelAnim )
		{
			animLength = gameEdit->ANIM_GetLength( modelAnim );
			animEndTime = time + animLength;
		}
	}
	updateAnimation = false;
	
}

void idRenderWindow::PreRender()
{
	if( needsRender )
	{
		world->InitFromMap( NULL );
		idDict spawnArgs;
		spawnArgs.Set( "classname", "light" );
		spawnArgs.Set( "name", "light_1" );
		spawnArgs.Set( "origin", lightOrigin.ToVec3().ToString() );
		spawnArgs.Set( "_color", lightColor.ToVec3().ToString() );
		gameEdit->ParseSpawnArgsToRenderLight( &spawnArgs, &rLight );
		lightDef = world->AddLightDef( &rLight );
		if( !modelName[0] )
		{
			common->Warning( "Window '%s' in gui '%s': no model set", GetName(), GetGui()->GetSourceFile() );
		}
		memset( &worldEntity, 0, sizeof( worldEntity ) );
		spawnArgs.Clear();
		spawnArgs.Set( "classname", "func_static" );
		spawnArgs.Set( "model", modelName );
		spawnArgs.Set( "origin", modelOrigin.c_str() );
		gameEdit->ParseSpawnArgsToRenderEntity( &spawnArgs, &worldEntity );
		if( worldEntity.hModel )
		{
			idVec3 v = modelRotate.ToVec3();
			worldEntity.axis = v.ToMat3();
			worldEntity.shaderParms[0] = 1;
			worldEntity.shaderParms[1] = 1;
			worldEntity.shaderParms[2] = 1;
			worldEntity.shaderParms[3] = 1;
			modelDef = world->AddEntityDef( &worldEntity );
		}
		needsRender = false;
	}
}

void idRenderWindow::Render( int time )
{
	rLight.origin = lightOrigin.ToVec3();
	rLight.shaderParms[SHADERPARM_RED] = lightColor.x();
	rLight.shaderParms[SHADERPARM_GREEN] = lightColor.y();
	rLight.shaderParms[SHADERPARM_BLUE] = lightColor.z();
	world->UpdateLightDef( lightDef, &rLight );
	if( worldEntity.hModel )
	{
		if( updateAnimation )
		{
			BuildAnimation( time );
		}
		if( modelAnim )
		{
			if( time > animEndTime )
			{
				animEndTime = time + animLength;
			}
			gameEdit->ANIM_CreateAnimFrame( worldEntity.hModel, modelAnim, worldEntity.numJoints, worldEntity.joints, animLength - ( animEndTime - time ), vec3_origin, false );
		}
		worldEntity.axis = idAngles( modelRotate.x(), modelRotate.y(), modelRotate.z() ).ToMat3();
		world->UpdateEntityDef( modelDef, &worldEntity );
	}
}




void idRenderWindow::Draw( int time, float x, float y )
{
	PreRender();
	Render( time );
	
	memset( &refdef, 0, sizeof( refdef ) );
	refdef.vieworg = viewOffset.ToVec3();;
	//refdef.vieworg.Set(-128, 0, 0);
	
	refdef.viewaxis.Identity();
	refdef.shaderParms[0] = 1;
	refdef.shaderParms[1] = 1;
	refdef.shaderParms[2] = 1;
	refdef.shaderParms[3] = 1;
	
	refdef.fov_x = 90;
	refdef.fov_y = 2 * atan( ( float )drawRect.h / drawRect.w ) * idMath::M_RAD2DEG;
	
	refdef.time[0] = time;
	refdef.time[1] = time;
	world->RenderScene( &refdef );
}

void idRenderWindow::PostParse()
{
	idWindow::PostParse();
}

//
//
idWinVar* idRenderWindow::GetWinVarByName( const char* _name, bool fixup, drawWin_t** owner )
{
//
	if( idStr::Icmp( _name, "model" ) == 0 )
	{
		return &modelName;
	}
	if( idStr::Icmp( _name, "anim" ) == 0 )
	{
		return &animName;
	}
	if( idStr::Icmp( _name, "lightOrigin" ) == 0 )
	{
		return &lightOrigin;
	}
	if( idStr::Icmp( _name, "lightColor" ) == 0 )
	{
		return &lightColor;
	}
	if( idStr::Icmp( _name, "modelOrigin" ) == 0 )
	{
		return &modelOrigin;
	}
	if( idStr::Icmp( _name, "modelRotate" ) == 0 )
	{
		return &modelRotate;
	}
	if( idStr::Icmp( _name, "viewOffset" ) == 0 )
	{
		return &viewOffset;
	}
	if( idStr::Icmp( _name, "needsRender" ) == 0 )
	{
		return &needsRender;
	}
	
//
//
	return idWindow::GetWinVarByName( _name, fixup, owner );
//
}

bool idRenderWindow::ParseInternalVar( const char* _name, idTokenParser* src )
{
	if( idStr::Icmp( _name, "animClass" ) == 0 )
	{
		ParseString( src, animClass );
		return true;
	}
	return idWindow::ParseInternalVar( _name, src );
}
