/*
 * Copyright 2011, Blender Foundation.
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#include "device.h"
#include "curves.h"
#include "mesh.h"
#include "object.h"
#include "scene.h"

#include "util_foreach.h"
#include "util_map.h"
#include "util_progress.h"
#include "util_vector.h"

CCL_NAMESPACE_BEGIN

/* Hair System Manager */

CurveSystemManager::CurveSystemManager()
{
	primitive = CURVE_LINE_SEGMENTS;
	line_method = CURVE_CORRECTED;
	interpolation = CURVE_CARDINAL;
	triangle_method = CURVE_CAMERA;
	resolution = 3;
	segments = 1;

	normalmix = 1.0f;
	encasing_ratio = 1.01f;

	use_curves = true;
	use_smooth = true;
	use_cache = true;
	use_parents = false;
	use_encasing = true;
	use_backfacing = false;
	use_joined = false;
	use_tangent_normal = false;
	use_tangent_normal_geometry = false;
	use_tangent_normal_correction = false;

	need_update = true;
	need_mesh_update = false;
}

CurveSystemManager::~CurveSystemManager()
{
}

void CurveSystemManager::device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
{
	if(!need_update)
		return;

	device_free(device, dscene);

	progress.set_status("Updating Hair settings", "Copying Hair settings to device");

	KernelCurves *kcurve= &dscene->data.curve_kernel_data;

	kcurve->curveflags = 0;

	if(primitive == CURVE_SEGMENTS)
		kcurve->curveflags |= CURVE_KN_INTERPOLATE;

	if(line_method == CURVE_ACCURATE)
		kcurve->curveflags |= CURVE_KN_ACCURATE;
	if(line_method == CURVE_CORRECTED)
		kcurve->curveflags |= CURVE_KN_INTERSECTCORRECTION;
	if(line_method == CURVE_POSTCORRECTED)
		kcurve->curveflags |= CURVE_KN_POSTINTERSECTCORRECTION;

	if(use_tangent_normal)
		kcurve->curveflags |= CURVE_KN_TANGENTGNORMAL;
	if(use_tangent_normal_correction)
		kcurve->curveflags |= CURVE_KN_NORMALCORRECTION;
	if(use_tangent_normal_geometry)
		kcurve->curveflags |= CURVE_KN_TRUETANGENTGNORMAL;
	if(use_joined)
		kcurve->curveflags |= CURVE_KN_CURVEDATA;
	if(use_backfacing)
		kcurve->curveflags |= CURVE_KN_BACKFACING;
	if(use_encasing)
		kcurve->curveflags |= CURVE_KN_ENCLOSEFILTER;

	kcurve->normalmix = normalmix;
	kcurve->encasing_ratio = encasing_ratio;

	if(progress.get_cancel()) return;

	need_update = false;
}

void CurveSystemManager::device_free(Device *device, DeviceScene *dscene)
{

}

bool CurveSystemManager::modified(const CurveSystemManager& CurveSystemManager)
{
	return !(line_method == CurveSystemManager.line_method &&
		interpolation == CurveSystemManager.interpolation &&
		primitive == CurveSystemManager.primitive &&
		use_encasing == CurveSystemManager.use_encasing &&
		use_tangent_normal == CurveSystemManager.use_tangent_normal &&
		use_tangent_normal_correction == CurveSystemManager.use_tangent_normal_correction &&
		use_tangent_normal_geometry == CurveSystemManager.use_tangent_normal_geometry &&
		encasing_ratio == CurveSystemManager.encasing_ratio &&
		use_backfacing == CurveSystemManager.use_backfacing &&
		normalmix == CurveSystemManager.normalmix &&
		use_cache == CurveSystemManager.use_cache &&
		use_smooth == CurveSystemManager.use_smooth &&
		triangle_method == CurveSystemManager.triangle_method &&
		resolution == CurveSystemManager.resolution &&
		use_curves == CurveSystemManager.use_curves &&
		use_joined == CurveSystemManager.use_joined &&
		segments == CurveSystemManager.segments &&
		use_parents == CurveSystemManager.use_parents);
}

bool CurveSystemManager::modified_mesh(const CurveSystemManager& CurveSystemManager)
{
	return !(primitive == CurveSystemManager.primitive &&
		interpolation == CurveSystemManager.interpolation &&
		use_parents == CurveSystemManager.use_parents &&
		use_smooth == CurveSystemManager.use_smooth &&
		triangle_method == CurveSystemManager.triangle_method &&
		resolution == CurveSystemManager.resolution &&
		use_curves == CurveSystemManager.use_curves &&
		use_joined == CurveSystemManager.use_joined &&
		segments == CurveSystemManager.segments &&
		use_cache == CurveSystemManager.use_cache);
}

void CurveSystemManager::tag_update(Scene *scene)
{
	need_update = true;
}

void CurveSystemManager::tag_update_mesh()
{
	need_mesh_update = true;
}
CCL_NAMESPACE_END