/*****************************************************************************
 * MeshLab                                                           o o     *
 * An extendible mesh processor                                    o     o   *
 *                                                                _   O  _   *
 * Copyright(C) 2005-2021                                           \/)\/    *
 * Visual Computing Lab                                            /\/|      *
 * ISTI - Italian National Research Council                           |      *
 *                                                                    \      *
 * All rights reserved.                                                      *
 *                                                                           *
 * 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 (http://www.gnu.org/licenses/gpl.txt)          *
 * for more details.                                                         *
 *                                                                           *
 ****************************************************************************/
#include "filter_unsharp.h"

#include <vcg/complex/algorithms/clean.h>
#include <vcg/complex/algorithms/crease_cut.h>
#include <vcg/complex/algorithms/harmonic.h>
#include <vcg/complex/algorithms/smooth.h>

using namespace vcg;
using namespace std;

enum WeightModeParam { WMP_AVG = 0, WMP_AREA, WMP_ANGLE, WMP_AS_DEF };

FilterUnsharp::FilterUnsharp()
{
	typeList = {
		FP_CREASE_CUT,
		FP_LAPLACIAN_SMOOTH,
		FP_HC_LAPLACIAN_SMOOTH,
		FP_SD_LAPLACIAN_SMOOTH,
		FP_TWO_STEP_SMOOTH,
		FP_TAUBIN_SMOOTH,
		FP_DEPTH_SMOOTH,
		//FP_DIRECTIONAL_PRESERVATION_STORE,
		FP_DIRECTIONAL_PRESERVATION_BLEND,
		FP_VERTEX_QUALITY_SMOOTHING,
		FP_FACE_NORMAL_SMOOTHING,
		FP_UNSHARP_NORMAL,
		FP_UNSHARP_GEOMETRY,
		FP_UNSHARP_QUALITY,
		FP_UNSHARP_VERTEX_COLOR,
		FP_RECOMPUTE_VERTEX_NORMAL,
		FP_RECOMPUTE_FACE_NORMAL,
		FP_RECOMPUTE_QUADFACE_NORMAL,
		FP_FACE_NORMAL_NORMALIZE,
		FP_VERTEX_NORMAL_NORMALIZE,
		FP_LINEAR_MORPH,
		FP_SCALAR_HARMONIC_FIELD};

	for (ActionIDType tt : types())
		actionList.push_back(new QAction(filterName(tt), this));
}

FilterUnsharp::~FilterUnsharp()
{
}

QString FilterUnsharp::pluginName() const
{
	return "FilterUnsharp";
}

QString FilterUnsharp::pythonFilterName(ActionIDType f) const
{
	switch (f) {
	case FP_LAPLACIAN_SMOOTH: return QString("apply_coord_laplacian_smoothing");
	case FP_HC_LAPLACIAN_SMOOTH: return QString("apply_coord_hc_laplacian_smoothing");
	case FP_SD_LAPLACIAN_SMOOTH: return QString("apply_coord_laplacian_smoothing_scale_dependent");
	case FP_TWO_STEP_SMOOTH: return QString("apply_coord_two_steps_smoothing");
	case FP_TAUBIN_SMOOTH: return QString("apply_coord_taubin_smoothing");
	case FP_DEPTH_SMOOTH: return QString("apply_coord_depth_smoothing");
	//case FP_DIRECTIONAL_PRESERVATION_STORE: return QString("Directional Geom. Preserv.");
	case FP_DIRECTIONAL_PRESERVATION_BLEND: return QString("apply_coord_directional_preservation");
	case FP_CREASE_CUT: return QString("meshing_cut_along_crease_edges");
	case FP_FACE_NORMAL_NORMALIZE: return QString("apply_normal_normalization_per_face");
	case FP_VERTEX_NORMAL_NORMALIZE: return QString("apply_normal_normalization_per_vertex");
	case FP_FACE_NORMAL_SMOOTHING: return QString("apply_normal_smoothing_per_face");
	case FP_VERTEX_QUALITY_SMOOTHING: return QString("apply_scalar_smoothing_per_vertex");
	case FP_UNSHARP_NORMAL: return QString("apply_normal_unsharp_mask_per_vertex");
	case FP_UNSHARP_GEOMETRY: return QString("apply_coord_unsharp_mask");
	case FP_UNSHARP_QUALITY: return QString("apply_scalar_unsharp_mask_per_vertex");
	case FP_UNSHARP_VERTEX_COLOR: return QString("apply_color_unsharp_mask_per_vertex");
	case FP_RECOMPUTE_VERTEX_NORMAL: return QString("compute_normal_per_vertex");
	case FP_RECOMPUTE_FACE_NORMAL: return QString("compute_normal_per_face");
	case FP_RECOMPUTE_QUADFACE_NORMAL: return QString("compute_normal_polygon_mesh_per_face");
	case FP_LINEAR_MORPH: return QString("compute_coord_linear_morphing");
	case FP_SCALAR_HARMONIC_FIELD: return QString("compute_scalar_by_scalar_harmonic_field_per_vertex");

	default: assert(0); return QString();
	}
}

QString FilterUnsharp::filterName(ActionIDType filter) const
{
	switch (filter) {
	case FP_LAPLACIAN_SMOOTH: return QString("Laplacian Smooth");
	case FP_HC_LAPLACIAN_SMOOTH: return QString("HC Laplacian Smooth");
	case FP_SD_LAPLACIAN_SMOOTH: return QString("ScaleDependent Laplacian Smooth");
	case FP_TWO_STEP_SMOOTH: return QString("TwoStep Smooth");
	case FP_TAUBIN_SMOOTH: return QString("Taubin Smooth");
	case FP_DEPTH_SMOOTH: return QString("Depth Smooth");
	//case FP_DIRECTIONAL_PRESERVATION_STORE: return QString("Directional Geom. Preserv.");
	case FP_DIRECTIONAL_PRESERVATION_BLEND: return QString("Directional Geometry Preservation");
	case FP_CREASE_CUT: return QString("Cut mesh along crease edges");
	case FP_FACE_NORMAL_NORMALIZE: return QString("Normalize Face Normals");
	case FP_VERTEX_NORMAL_NORMALIZE: return QString("Normalize Vertex Normals");
	case FP_FACE_NORMAL_SMOOTHING: return QString("Smooth Face Normals");
	case FP_VERTEX_QUALITY_SMOOTHING: return QString("Smooth Vertex Quality");
	case FP_UNSHARP_NORMAL: return QString("UnSharp Mask Normals");
	case FP_UNSHARP_GEOMETRY: return QString("UnSharp Mask Geometry");
	case FP_UNSHARP_QUALITY: return QString("UnSharp Mask Quality");
	case FP_UNSHARP_VERTEX_COLOR: return QString("UnSharp Mask Color");
	case FP_RECOMPUTE_VERTEX_NORMAL: return QString("Re-Compute Vertex Normals");
	case FP_RECOMPUTE_FACE_NORMAL: return QString("Re-Compute Face Normals");
	case FP_RECOMPUTE_QUADFACE_NORMAL: return QString("Re-Compute Per-Polygon Face Normals");
	case FP_LINEAR_MORPH: return QString("Vertex Linear Morphing");
	case FP_SCALAR_HARMONIC_FIELD: return QString("Generate Scalar Harmonic Field");

	default: assert(0);
	}
	return QString("Error on FilterUnsharp::filterName()");
}

QString FilterUnsharp::filterInfo(ActionIDType filterId) const
{
	switch (filterId) {
	case FP_LAPLACIAN_SMOOTH:
		return tr(
			"Laplacian smooth. Average each vertex position with weighted positions of neighbour "
			"vertices.<br>"
			"<b>Laplacian Mesh Processing</b> by <i>Olga Sorkine</i>. EUROGRAPHICS 2005<br>"
			"<a href='http://dx.doi.org/10.2312/egst.20051044'>doi:10.2312/egst.20051044</a>");
	case FP_HC_LAPLACIAN_SMOOTH:
		return tr(
			"HC Laplacian Smoothing. Extended version of Laplacian Smoothing based on the article: "
			"<br>"
			"<b>Improved Laplacian Smoothing of Noisy Surface Meshes</b> "
			"by <i>Vollmer, Mencl and Müller</i>. EUROGRAPHICS Volume 18 (1999), Number 3, "
			"131-138.<br>"
			"<a href='https://doi.org/10.1111/1467-8659.00334'>doi:10.1111/1467-8659.00334</a>");
	case FP_SD_LAPLACIAN_SMOOTH:
		return tr(
			"Scale Dependent Laplacian Smoothing, extended version of Laplacian Smoothing based on "
			"the Fujiwara extended umbrella operator.<br>"
			"<b>Implicit Fairing of Irregular Meshes using Diffusion and Curvature Flow</b> "
			"by <i>Desbrun, Meyer, Schroeder and Barr</i>. SIGGRAPH 1999<br>"
			"<a href='https://doi.org/10.1145/311535.311576'>doi:10.1145/311535.311576</a>");
	case FP_TWO_STEP_SMOOTH:
		return tr(
			"Two Steps Smoothing, a feature preserving/enhancing fairing filter based on two "
			"stages:<ol><li>Normal Smoothing, where "
			"similar normals are averaged together.<li>Vertex reposition, where vertices are moved "
			"to fit on the new normals.</ol>"
			"<b>A Comparison of Mesh Smoothing Methods</b> by <i>A. Belyaev and Y. Ohtake</i>. "
			"Proc. Israel-Korea Bi-National Conf. Geometric Modeling and Computer Graphics, pp. "
			"83-87, 2003.<br>"
			"<a "
			"href='https://www.researchgate.net/publication/"
			"47861030_A_comparison_of_mesh_smoothing_methods'>publication</a>");
	case FP_TAUBIN_SMOOTH:
		return tr(
			"The &lambda;-&mu; Taubin smoothing, combines two steps of low-pass filtering for each "
			"iteration. Based on the article:<br>"
			"<b>A signal processing approach to fair surface design</b> by <i>Gabriel Taubin</i>, "
			"SIGGRAPH 1995<br>"
			"<a href='https://doi.org/10.1145/218380.218473'>doi:10.1145/218380.218473</a>");
	case FP_DEPTH_SMOOTH:
		return tr(
			"A laplacian smooth that is constrained to move vertices only in one given direction "
			"(usually the viewer direction).");
	//case FP_DIRECTIONAL_PRESERVATION_STORE:
	//	return tr(
	//		"Blend the geometry previously stored in a  per vertex custom point attribute with the "
	//		"current geometry. This is useful to limit the influence of any smoothing algorithm "
	//		"along the viewing direction. This is useful to cope with the biased distribution of "
	//		"measuring error in many scanning devices, because TOF scanners usually have very good "
	//		"<i>x,y</i> accuracy but suffer of greater depth errors.");
	case FP_DIRECTIONAL_PRESERVATION_BLEND:
		return tr(
			"Blend through a given direction the geometry previously stored in a per vertex "
			"custom point attribute with the current geometry. This is useful to limit the "
			"influence of any smoothing algorithm along the viewing direction. This is useful to "
			"cope with the biased distribution of measuring error in many scanning devices, "
			"because TOF scanners usually have very good <i>x,y</i> accuracy but suffer of greater "
			"depth errors.");
	case FP_CREASE_CUT:
		return tr(
			"Cut the mesh along crease edges, duplicating the vertices as necessary. Crease (or "
			"sharp) edges are defined according "
			"to the variation of normal of the adjacent faces.");
	case FP_FACE_NORMAL_NORMALIZE: return tr("Normalize Face Normal Lengths to unit vectors.");
	case FP_VERTEX_NORMAL_NORMALIZE: return tr("Normalize Vertex Normal Lengths to unit vectors.");
	case FP_VERTEX_QUALITY_SMOOTHING:
		return tr(
			"Laplacian smooth of the <a "
			"href='https://stackoverflow.com/questions/58610746'>quality per vertex</a> values.");
	case FP_FACE_NORMAL_SMOOTHING:
		return tr(
			"Laplacian smooth of the face normals, without touching the position of the vertices.");
	case FP_UNSHARP_NORMAL:
		return tr(
			"Unsharp mask filtering of the normals per face, putting in more evidence normal "
			"variations.<br>"
			"<b>A simple normal enhancement technique for interactive non-photorealistic "
			"renderings</b> "
			"by <i>Cignoni, Scopigno and Tarini</i>, Comput Graph, 29 (1) (2005)<br>"
			"<a "
			"href='https://doi.org/10.1016/j.cag.2004.11.012'>doi:10.1016/j.cag.2004.11.012</a>");
	case FP_UNSHARP_GEOMETRY:
		return tr(
			"Apply Unsharp filter to geometric shape, putting in more evidence ridges and valleys "
			"variations.<br>"
			"<a href='https://en.wikipedia.org/wiki/Unsharp_masking'>Unsharp Masking</a>");
	case FP_UNSHARP_QUALITY:
		return tr(
			"Apply Unsharp filter to values of <a "
			"href='https://stackoverflow.com/questions/58610746'>quality per vertex</a>.<br>"
			"See <a href='https://en.wikipedia.org/wiki/Unsharp_masking'>Unsharp Masking</a>");
	case FP_UNSHARP_VERTEX_COLOR:
		return tr(
			"Apply Unsharp filter to the vertex color, putting in more evidence color "
			"variations.<br>"
			"See <a href='https://en.wikipedia.org/wiki/Unsharp_masking'>Unsharp Masking</a>");
	case FP_RECOMPUTE_VERTEX_NORMAL:
		return tr(
			"Recompute vertex normals according to four different schemes:<br>"
			"1) Simple (no weights) average of normals of the incident faces <br>"
			"2) Area weighted average of normals of the incident faces <br>"
			"3) Angle weighted sum of normals of the incident faces according to the article "
			"<b>[1]</b>. "
			"Probably this is the best all-purpose choice. It could slightly bias the result for "
			"degenerate, fat triangles.<br>"
			"4) Weighted sum of normals of the incident faces, as defined by article <b>[2]</b>. "
			"The weight for each wedge is the cross product of the two edges over the product of "
			"the square of the two edge lengths."
			"According to the original article it is perfect only for spherical surface, but it "
			"should perform well also in practice.<br>"
			"[1]: <b>Computing Vertex Normals from Polygonal Facet</b> by <i>G Thurmer and CA "
			"Wuthrich</i>, JGT volume3, num 1. 1998<br>"
			"<a "
			"href='https://doi.org/10.1080/10867651.1998.10487487'>doi:10.1080/"
			"10867651.1998.10487487</a><br>"
			"[2]: <b>Weights for Computing Vertex Normals from Facet Normals</b> by <i>Nelson "
			"Max</i>, JGT vol4, num 2. 1999<br>"
			"<a "
			"href='https://doi.org/10.1080/10867651.1999.10487501'>doi:10.1080/"
			"10867651.1999.10487501</a>");
	case FP_RECOMPUTE_FACE_NORMAL:
		return tr(
			"Recompute face normals as the normal of the plane of the face.<br>"
			"See <a href='https://math.stackexchange.com/questions/305642/'>How to find surface "
			"normal of a triangle</a>");
	case FP_RECOMPUTE_QUADFACE_NORMAL:
		return tr(
			"Recompute face normals as the average of the normals of the triangles that builds a "
			"polygon. "
			"Useful for showing uniformly shaded quad or polygonal meshes represented using "
			"<a href='https://stackoverflow.com/questions/59392193'>faux edges</a>.");
	case FP_LINEAR_MORPH:
		return tr(
			"Morph deformation of current mesh towards a target mesh with the same number of "
			"vertices and same vertex ordering. "
			"Each vertex of the source mesh is linearly interpolated towards the corresponding "
			"vertex on the target mesh "
			"using the formula:<p align='center'>result<sub><big>i</big></sub> = "
			"(1-&lambda;)*source<sub><big>i</big></sub> + "
			"&lambda;*target<sub><big>i</big></sub></p>"
			"<b>Three-dimensional metamorphosis: a survey</b><br>by <i>F. Lazarus and A. "
			"Verroust</i>, Visual Computer, 1998<br>"
			"<a href='https://doi.org/10.1007/s003710050149'>doi:10.1007/s003710050149</a>");
	case FP_SCALAR_HARMONIC_FIELD:
		return QString(
			"Generates a scalar harmonic field over the mesh. Input scalar values must be assigned "
			"to two vertices "
			"as Dirichlet boundary conditions. Applying the filter, a discrete Laplace operator "
			"generates the harmonic "
			"field values for all the mesh vertices, which are stored in the "
			"<a href='https://stackoverflow.com/questions/58610746'>quality per vertex "
			"attribute</a> of the mesh.<br>"
			"For more details see:"
			"<b>Dynamic Harmonic Fields for Surface Processing</b> by <i>Kai Xua, Hao Zhang, "
			"Daniel Cohen-Or, Yueshan Xionga</i>. "
			"Computers & Graphics, 2009 <br>"
			"<a "
			"href='https://doi.org/10.1016/j.cag.2009.03.022'>doi:10.1016/j.cag.2009.03.022</a>");
	default: assert(0);
	}
	return QString("Error on FilterUnsharp::filterInfo()!");
}

FilterUnsharp::FilterClass FilterUnsharp::getClass(const QAction* a) const
{
	switch (ID(a)) {
	case FP_CREASE_CUT:
		return FilterPlugin::FilterClass(FilterPlugin::Normal | FilterPlugin::Remeshing);
	case FP_SD_LAPLACIAN_SMOOTH:
	case FP_HC_LAPLACIAN_SMOOTH:
	case FP_LAPLACIAN_SMOOTH:
	case FP_TWO_STEP_SMOOTH:
	case FP_TAUBIN_SMOOTH:
	case FP_DEPTH_SMOOTH:
	//case FP_DIRECTIONAL_PRESERVATION_STORE:
	case FP_DIRECTIONAL_PRESERVATION_BLEND:
	case FP_FACE_NORMAL_SMOOTHING:
	case FP_VERTEX_QUALITY_SMOOTHING:
	case FP_UNSHARP_NORMAL:
	case FP_UNSHARP_GEOMETRY:
	case FP_UNSHARP_QUALITY:
	case FP_LINEAR_MORPH: return FilterPlugin::Smoothing;

	case FP_UNSHARP_VERTEX_COLOR:
		return FilterPlugin::FilterClass(FilterPlugin::Smoothing | FilterPlugin::VertexColoring);

	case FP_RECOMPUTE_FACE_NORMAL:
	case FP_RECOMPUTE_QUADFACE_NORMAL:
	case FP_RECOMPUTE_VERTEX_NORMAL:
	case FP_FACE_NORMAL_NORMALIZE:
	case FP_VERTEX_NORMAL_NORMALIZE: return FilterPlugin::Normal;
	case FP_SCALAR_HARMONIC_FIELD: return FilterPlugin::Remeshing;

	default: return FilterPlugin::Generic;
	}
}
int FilterUnsharp::getPreConditions(const QAction* a) const
{
	switch (ID(a)) {
	case FP_VERTEX_QUALITY_SMOOTHING:
	case FP_UNSHARP_QUALITY: return MeshModel::MM_FACENUMBER | MeshModel::MM_VERTQUALITY;
	case FP_SD_LAPLACIAN_SMOOTH:
	case FP_HC_LAPLACIAN_SMOOTH:
	case FP_LAPLACIAN_SMOOTH:
	case FP_TWO_STEP_SMOOTH:
	case FP_TAUBIN_SMOOTH:
	case FP_DEPTH_SMOOTH:
	case FP_LINEAR_MORPH:
	case FP_UNSHARP_NORMAL:
	case FP_UNSHARP_GEOMETRY:
	//case FP_DIRECTIONAL_PRESERVATION_STORE:
	case FP_DIRECTIONAL_PRESERVATION_BLEND:
	case FP_FACE_NORMAL_SMOOTHING:
	case FP_RECOMPUTE_FACE_NORMAL:
	case FP_RECOMPUTE_QUADFACE_NORMAL:
	case FP_RECOMPUTE_VERTEX_NORMAL:
	case FP_FACE_NORMAL_NORMALIZE:
	case FP_CREASE_CUT:
	case FP_SCALAR_HARMONIC_FIELD: return MeshModel::MM_FACENUMBER;
	case FP_UNSHARP_VERTEX_COLOR: return MeshModel::MM_FACENUMBER | MeshModel::MM_VERTCOLOR;

	case FP_VERTEX_NORMAL_NORMALIZE: return MeshModel::MM_NONE;

	default: assert(0); return MeshModel::MM_NONE;
	}
}

int FilterUnsharp::postCondition(const QAction* a) const
{
	switch (ID(a)) {
	case FP_SD_LAPLACIAN_SMOOTH:
	case FP_HC_LAPLACIAN_SMOOTH:
	case FP_LAPLACIAN_SMOOTH:
	case FP_TWO_STEP_SMOOTH:
	case FP_TAUBIN_SMOOTH:
	case FP_DEPTH_SMOOTH:
	case FP_LINEAR_MORPH:
	case FP_UNSHARP_NORMAL:
	case FP_UNSHARP_GEOMETRY:
		return MeshModel::MM_VERTCOORD | MeshModel::MM_VERTNORMAL | MeshModel::MM_FACENORMAL;
	//case FP_DIRECTIONAL_PRESERVATION_STORE:
	case FP_DIRECTIONAL_PRESERVATION_BLEND:
	case FP_VERTEX_QUALITY_SMOOTHING:
	case FP_UNSHARP_QUALITY:
	case FP_CREASE_CUT: return MeshModel::MM_ALL;
	case FP_FACE_NORMAL_SMOOTHING:
	case FP_RECOMPUTE_FACE_NORMAL:
	case FP_RECOMPUTE_QUADFACE_NORMAL:
	case FP_FACE_NORMAL_NORMALIZE: return MeshModel::MM_FACENORMAL;
	case FP_RECOMPUTE_VERTEX_NORMAL:
	case FP_VERTEX_NORMAL_NORMALIZE: return MeshModel::MM_VERTNORMAL;
	case FP_UNSHARP_VERTEX_COLOR: return MeshModel::MM_VERTCOLOR;
	case FP_SCALAR_HARMONIC_FIELD: return MeshModel::MM_VERTQUALITY;
	default: assert(0); return MeshModel::MM_ALL;
	}
}

int FilterUnsharp::getRequirements(const QAction* action)
{
	switch (ID(action)) {
	case FP_TWO_STEP_SMOOTH: return MeshModel::MM_VERTFACETOPO;

	case FP_CREASE_CUT:
	case FP_UNSHARP_NORMAL:
	case FP_RECOMPUTE_QUADFACE_NORMAL:
	case FP_FACE_NORMAL_SMOOTHING: return MeshModel::MM_FACEFACETOPO;

	case FP_RECOMPUTE_FACE_NORMAL:
	case FP_RECOMPUTE_VERTEX_NORMAL:
	case FP_FACE_NORMAL_NORMALIZE:
	case FP_VERTEX_NORMAL_NORMALIZE:
	//case FP_DIRECTIONAL_PRESERVATION_STORE:
	case FP_DIRECTIONAL_PRESERVATION_BLEND:
	case FP_LINEAR_MORPH:
	case FP_HC_LAPLACIAN_SMOOTH:
	case FP_SD_LAPLACIAN_SMOOTH:
	case FP_TAUBIN_SMOOTH:
	case FP_DEPTH_SMOOTH:
	case FP_LAPLACIAN_SMOOTH:
	case FP_UNSHARP_GEOMETRY:
	case FP_UNSHARP_QUALITY:
	case FP_VERTEX_QUALITY_SMOOTHING:
	case FP_SCALAR_HARMONIC_FIELD:
	case FP_UNSHARP_VERTEX_COLOR: return MeshModel::MM_NONE;
	default: assert(0);
	}
	return MeshModel::MM_NONE;
}

RichParameterList FilterUnsharp::initParameterList(const QAction* action, const MeshDocument& md)
{
	RichParameterList parlst;
	switch (ID(action)) {
	case FP_RECOMPUTE_VERTEX_NORMAL:
		parlst.addParam(RichEnum(
			"weightMode",
			0,
			QStringList() << "Simple Average"
						  << "By Area"
						  << "By Angle"
						  << "As defined by N. Max",
			tr("Weighting Mode:"),
			""));
		break;
	case FP_CREASE_CUT:
		parlst.addParam(RichFloat(
			"angleDeg",
			90.f,
			tr("Crease Angle (degree)"),
			tr("If the angle between the normals of two adjacent faces is <b>larger</b> that this "
			   "threshold the edge is considered a creased and the mesh is cut along it.")));
		break;
	case FP_UNSHARP_NORMAL:
		parlst.addParam(RichBool(
			"recalc",
			false,
			tr("Recompute Normals"),
			tr("Recompute normals from scratch before the unsharp masking")));
		parlst.addParam(RichFloat(
			"weight",
			0.3f,
			tr("Unsharp Weight"),
			tr("the unsharp weight <i>w<sub><big>u</big></sub></i> in the unsharp mask equation: "
			   "<br> <i>w<sub><big>o</big></sub>orig + w<sub><big>u</big></sub> (orig - "
			   "lowpass)</i><br>")));
		parlst.addParam(RichFloat(
			"weightOrig",
			1.f,
			tr("Original Weight"),
			tr("How much the original signal is used, e.g. the weight "
			   "<i>w<sub><big>o</big></sub></i> in the above unsharp mask equation.<br> Usually "
			   "you should not need to change the default 1.0 value.")));
		parlst.addParam(RichInt(
			"iterations",
			5,
			"Smooth Iterations",
			tr("number of laplacian face smooth iterations in every run")));
		break;
	case FP_UNSHARP_GEOMETRY:
		parlst.addParam(RichFloat(
			"weight",
			0.3f,
			tr("Unsharp Weight"),
			tr("the unsharp weight <i>w<sub><big>u</big></sub></i> in the unsharp mask equation: "
			   "<br> <i>w<sub><big>o</big></sub>orig + w<sub><big>u</big></sub> (orig - "
			   "lowpass)</i><br>")));
		parlst.addParam(RichFloat(
			"weightOrig",
			1.f,
			tr("Original Weight"),
			tr("How much the original signal is used, e.g. the weight "
			   "<i>w<sub><big>o</big></sub></i> in the above unsharp mask equation<br> Usually you "
			   "should not need to change the default 1.0 value.")));
		parlst.addParam(RichInt(
			"iterations",
			5,
			"Smooth Iterations",
			tr("number of iterations of laplacian smooth in every run")));
		break;
	case FP_UNSHARP_VERTEX_COLOR:
		parlst.addParam(RichFloat(
			"weight",
			0.3f,
			tr("Unsharp Weight"),
			tr("the unsharp weight <i>w<sub><big>u</big></sub></i> in the unsharp mask equation: "
			   "<br> <i>w<sub><big>o</big></sub>orig + w<sub><big>u</big></sub> (orig - "
			   "lowpass)</i><br>")));
		parlst.addParam(RichFloat(
			"weightOrig",
			1.f,
			tr("Original Color Weight"),
			tr("How much the original signal is used, e.g. the weight "
			   "<i>w<sub><big>o</big></sub></i> in the above unsharp mask equation<br> Usually you "
			   "should not need to change the default 1.0 value.")));
		parlst.addParam(RichInt(
			"iterations",
			5,
			"Smooth Iterations",
			tr("number of iterations of laplacian smooth in every run")));
		break;
	case FP_UNSHARP_QUALITY:
		parlst.addParam(RichFloat(
			"weight",
			0.3f,
			tr("Unsharp Weight"),
			tr("the unsharp weight <i>w<sub><big>u</big></sub></i> in the unsharp mask equation: "
			   "<br> <i>w<sub><big>o</big></sub>orig + w<sub><big>u</big></sub> (orig - "
			   "lowpass)</i><br>")));
		parlst.addParam(RichFloat(
			"weightOrig",
			1.f,
			tr("Original Weight"),
			tr("How much the original signal is used, e.g. the weight "
			   "<i>w<sub><big>o</big></sub></i> in the above unsharp mask equation<br> Usually you "
			   "should not need to change the default 1.0 value.")));
		parlst.addParam(RichInt(
			"iterations",
			5,
			"Smooth Iterations",
			tr("number of iterations of laplacian smooth in every run")));
		break;
	case FP_TWO_STEP_SMOOTH:
		parlst.addParam(RichInt(
			"stepSmoothNum",
			(int) 3,
			"Smoothing steps",
			"The number of times that the whole algorithm (normal smoothing + vertex fitting) is "
			"iterated."));
		parlst.addParam(RichFloat(
			"normalThr",
			(float) 60,
			"Feature Angle Threshold (deg)",
			"Specify a threshold angle (0..90) for features that you want to be "
			"preserved.<br>Features forming angles LARGER than the specified threshold will be "
			"preserved. <br> 0 -> no smoothing <br> 90 -> all faces will be smoothed"));
		parlst.addParam(RichInt(
			"stepNormalNum",
			(int) 20,
			"Normal Smoothing steps",
			"Number of iterations of normal smoothing step. The larger the better and (the "
			"slower)"));
		parlst.addParam(RichInt(
			"stepFitNum",
			(int) 20,
			"Vertex Fitting steps",
			"Number of iterations of the vertex fitting procedure."));
		parlst.addParam(RichBool(
			"Selected",
			md.mm()->cm.sfn > 0,
			"Affect only selected faces",
			"If checked the filter is performed only on the selected faces"));
		break;
	case FP_LAPLACIAN_SMOOTH:
		parlst.addParam(RichInt(
			"stepSmoothNum",
			(int) 3,
			"Smoothing steps",
			"The number of times that the whole algorithm (normal smoothing + vertex fitting) is "
			"iterated."));
		parlst.addParam(RichBool(
			"Boundary",
			true,
			"1D Boundary Smoothing",
			"Smooth boundary edges only by themselves (e.g. the polyline forming the boundary of "
			"the mesh is independently smoothed). This can reduce the shrinking on the border but "
			"can have strange effects on very small boundaries."));
		parlst.addParam(RichBool(
			"cotangentWeight",
			true,
			"Cotangent weighting",
			"Use cotangent weighting scheme for the averaging of the position. Otherwise the "
			"simpler umbrella scheme (1 if the edge is present) is used."));
		parlst.addParam(RichBool(
			"Selected",
			md.mm()->cm.sfn > 0,
			"Affect only selection",
			"If checked the filter is performed only on the selected area"));
		break;
	case FP_DEPTH_SMOOTH:
		parlst.addParam(RichInt(
			"stepSmoothNum",
			(int) 3,
			"Smoothing steps",
			"The number of times that the whole algorithm (normal smoothing + vertex fitting) is "
			"iterated."));
		parlst.addParam(RichDirection(
			"viewPoint",
			Point3f(0, 0, 0),
			"Viewpoint",
			"The position of the view point that is used to get the constraint direction."));
		parlst.addParam(RichPercentage(
			"delta",
			1.0,
			0,
			1.0,
			"Strength",
			"How much smoothing is applied: 0 (no smooth) e 1 (full smooth)"));
		parlst.addParam(RichBool(
			"Selected",
			md.mm()->cm.sfn > 0,
			"Affect only selection",
			"If checked the filter is performed only on the selected area"));
		break;
	//case FP_DIRECTIONAL_PRESERVATION_STORE:
		//parlst.addParam(RichEnum(
		//	"step",
		//	0,
		//	QStringList() << "Store Vertex Position"
		//				  << "Blend Vertex Position",
		//	tr("Step:"),
		//	tr("The purpose of this filter is to <b>constrain</b> any smoothing algorithm to "
		//	   "moving vertices only along a give line of sight.<br> First you should store "
		//	   "current vertex position, than after applying  one of the many smoothing algorithms "
		//	   "you should re start this filter and blend the original positions with the smoothed "
		//	   "results.<br>"
		//	   "Given a view point  <i>vp</i> , the smoothed vertex position <i>vs</i> and the "
		//	   "original position  <i>v</i>, The new vertex position is computed as the projection "
		//	   "of  <i>vs</i> on the line  connecting  <i>v</i>  and <i>vp</i>.")));
		//break;
	case FP_DIRECTIONAL_PRESERVATION_BLEND: {
		QString s;
		if (md.mm()->cm.vert_attr.size() != 0) // get the first per vertex custom attribute name
			s = QString::fromStdString((*md.mm()->cm.vert_attr.begin())._name);
		parlst.addParam(RichString(
			"attr_name",
			s,
			"Custom attribute name",
			"The name of the per vertex custom point attribute that contains the previous "
			"geometry."));
		parlst.addParam(RichDirection(
			"viewPoint",
			Point3f(0, 0, 0),
			"Viewpoint",
			"The position of the view point that is used to get the constraint direction."));
	}
		break;
	case FP_TAUBIN_SMOOTH:
		parlst.addParam(RichFloat(
			"lambda",
			(float) 0.5,
			"Lambda",
			"The lambda parameter of the Taubin Smoothing algorithm"));
		parlst.addParam(RichFloat(
			"mu", (float) -0.53, "mu", "The mu parameter of the Taubin Smoothing algorithm"));
		parlst.addParam(RichInt(
			"stepSmoothNum",
			(int) 10,
			"Smoothing steps",
			"The number of times that the taubin smoothing is iterated. Usually it requires a "
			"larger number of iteration than the classical laplacian"));
		parlst.addParam(RichBool(
			"Selected",
			md.mm()->cm.sfn > 0,
			"Affect only selected faces",
			"If checked the filter is performed only on the selected faces"));
		break;
	case FP_SD_LAPLACIAN_SMOOTH: {
		parlst.addParam(RichInt(
			"stepSmoothNum",
			(int) 3,
			"Smoothing steps",
			"The number of times that the whole algorithm (normal smoothing + vertex fitting) is "
			"iterated."));
		float maxVal = md.mm()->cm.bbox.Diag() / 10;
		parlst.addParam(RichPercentage("delta", maxVal * 0.01, 0, maxVal, "delta", ""));
		parlst.addParam(RichBool(
			"Selected",
			md.mm()->cm.sfn > 0,
			"Affect only selected faces",
			"If checked the filter is performed only on the selected faces"));
	} break;
	case FP_LINEAR_MORPH: {
		parlst.addParam(RichMesh(
			"TargetMesh", md.mm()->id(), &md, "Target Mesh", "The mesh that is the morph target."));
		parlst.addParam(RichDynamicFloat(
			"PercentMorph",
			0.0,
			-150,
			250,
			"% Morph",
			tr("The percent you want to morph towards (or away from) the target. <br>"
			   "0 means current mesh <br>"
			   "100 means targe mesh <br>"
			   "<0 and >100 linearly extrapolate between the two mesh <br>")));
	} break;
	case FP_SCALAR_HARMONIC_FIELD:
		parlst.addParam(RichPosition(
			"point1",
			md.mm()->cm.bbox.min,
			"Point 1",
			"A vertex on the mesh that represent one harmonic field boundary condition."));
		parlst.addParam(RichPosition(
			"point2",
			md.mm()->cm.bbox.max,
			"Point 2",
			"A vertex on the mesh that represent one harmonic field boundary condition."));
		parlst.addParam(RichDynamicFloat(
			"value1",
			0.0f,
			0.0f,
			1.0f,
			"value for the 1st point",
			"Harmonic field value for the vertex."));
		parlst.addParam(RichDynamicFloat(
			"value2",
			1.0f,
			0.0f,
			1.0f,
			"value for the 2nd point",
			"Harmonic field value for the vertex."));
		parlst.addParam(RichBool(
			"colorize",
			true,
			"Colorize",
			"Colorize the mesh to provide an indication of the obtained harmonic field."));
		break;
	}
	return parlst;
}

std::map<std::string, QVariant> FilterUnsharp::applyFilter(
	const QAction*           filter,
	const RichParameterList& par,
	MeshDocument&            md,
	unsigned int& /*postConditionMask*/,
	vcg::CallBackPos* cb)
{
	MeshModel& m = *(md.mm());
	switch (ID(filter)) {
	case FP_CREASE_CUT: {
		if (tri::Clean<CMeshO>::CountNonManifoldEdgeFF(m.cm, false) > 0 ||
			tri::Clean<CMeshO>::CountNonManifoldVertexFF(m.cm, false) > 0) {
			throw MLException(
				"Mesh has some not 2 manifold faces, this filter require manifoldness");
		}

		Scalarm angleDeg = par.getFloat("angleDeg");
		tri::CreaseCut(m.cm, math::ToRad(angleDeg));
		m.clearDataMask(MeshModel::MM_FACEFACETOPO);
	} break;

	case FP_FACE_NORMAL_SMOOTHING:
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		tri::Smooth<CMeshO>::FaceNormalLaplacianFF(m.cm);
		break;
	case FP_VERTEX_QUALITY_SMOOTHING:
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		tri::Smooth<CMeshO>::VertexQualityLaplacian(m.cm);
		break;

	case FP_LAPLACIAN_SMOOTH: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		int  stepSmoothNum = par.getInt("stepSmoothNum");
		bool Selected      = par.getBool("Selected");
		if (Selected && m.cm.svn == 0)
			m.cm.svn = tri::UpdateSelection<CMeshO>::VertexFromFaceStrict(m.cm);

		bool boundarySmooth  = par.getBool("Boundary");
		bool cotangentWeight = par.getBool("cotangentWeight");
		if (!boundarySmooth)
			tri::UpdateFlags<CMeshO>::FaceClearB(m.cm);

		tri::Smooth<CMeshO>::VertexCoordLaplacian(
			m.cm, stepSmoothNum, Selected, cotangentWeight, cb);
		log("Smoothed %d vertices", Selected ? m.cm.svn : m.cm.vn);
		m.updateBoxAndNormals();
	} break;
	case FP_DEPTH_SMOOTH: {
		int  stepSmoothNum = par.getInt("stepSmoothNum");
		bool Selected      = par.getBool("Selected");
		if (Selected && m.cm.svn == 0)
			m.cm.svn = tri::UpdateSelection<CMeshO>::VertexFromFaceStrict(m.cm);
		Scalarm delta     = par.getAbsPerc("delta");
		Point3m viewpoint = par.getPoint3m("viewPoint");
		tri::Smooth<CMeshO>::VertexCoordViewDepth(
			m.cm, viewpoint, delta, stepSmoothNum, Selected, true);
		log("depth Smoothed %d vertices", Selected ? m.cm.svn : m.cm.vn);
		m.updateBoxAndNormals();
	} break;
//	case FP_DIRECTIONAL_PRESERVATION_STORE: {
//		const std::string AttribName("SavedVertPosition");
//		if (tri::HasPerVertexAttribute(m.cm, AttribName)) {
//			vcg::tri::Allocator<CMeshO>::DeletePerVertexAttribute(m.cm, AttribName);
//		}
//		CMeshO::PerVertexAttributeHandle<Point3m> h =
//			tri::Allocator<CMeshO>::AddPerVertexAttribute<Point3m>(m.cm, AttribName);
//		CMeshO::VertexIterator vi;

//		for (vi = m.cm.vert.begin(); vi != m.cm.vert.end(); ++vi)
//			h[vi] = vi->cP();

//		log("Stored Position %d vertices", m.cm.vn);
//		break;
//	}
	case FP_DIRECTIONAL_PRESERVATION_BLEND: {
		const std::string attribName = par.getString("attr_name").toStdString();
		Point3m           viewpoint = par.getPoint3m("viewPoint");
		float             alpha     = 1;
		if (!tri::HasPerVertexAttribute(m.cm, attribName)) {
			throw MLException(
				"Failed to retrieve the stored vertex position. Current mesh has not a per vertex "
				"custom point attribute called \"" + QString::fromStdString(attribName) + "\"<br>"
				"You can create it by running the filter \"Define new per vertex custom point "
				"attribute.\"");
		}
		CMeshO::PerVertexAttributeHandle<Point3m> h =
			tri::Allocator<CMeshO>::GetPerVertexAttribute<Point3m>(m.cm, attribName);
		if (!vcg::tri::Allocator<CMeshO>::IsValidHandle(m.cm, h)) {
			throw MLException(
				"Failed to retrieve the stored vertex position. Current mesh has not a per vertex "
				"custom point attribute called \"" + QString::fromStdString(attribName) + "\"<br>"
				"You can create it by running the filter \"Define new per vertex custom point "
				"attribute.\"");
		}

		CMeshO::VertexIterator vi;
		for (vi = m.cm.vert.begin(); vi != m.cm.vert.end(); ++vi) {
			Point3m d = h[vi] - viewpoint;
			d.Normalize();
			Scalarm s = d * ((*vi).cP() - h[vi]);
			(*vi).P() = h[vi] + d * (s * alpha);
		}
		m.updateBoxAndNormals();
		log("Projected smoothed Position %d vertices", m.cm.vn);
		break;
	}
	case FP_SD_LAPLACIAN_SMOOTH: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		int    stepSmoothNum = par.getInt("stepSmoothNum");
		size_t cnt           = tri::UpdateSelection<CMeshO>::VertexFromFaceStrict(m.cm);
		// Small hack
		tri::UpdateFlags<CMeshO>::FaceClearB(m.cm);
		Scalarm delta = par.getAbsPerc("delta");
		tri::Smooth<CMeshO>::VertexCoordScaleDependentLaplacian_Fujiwara(
			m.cm, stepSmoothNum, delta);
		log("Smoothed %d vertices", cnt > 0 ? cnt : m.cm.vn);
		m.updateBoxAndNormals();
	} break;
	case FP_HC_LAPLACIAN_SMOOTH: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		size_t cnt = tri::UpdateSelection<CMeshO>::VertexFromFaceStrict(m.cm);
		tri::Smooth<CMeshO>::VertexCoordLaplacianHC(m.cm, 1, cnt > 0);
		m.updateBoxAndNormals();
	} break;
	case FP_TWO_STEP_SMOOTH: {
		tri::Clean<CMeshO>::RemoveUnreferencedVertex(m.cm);
		tri::UpdateSelection<CMeshO>::VertexFromFaceStrict(m.cm);
		int stepSmoothNum = par.getInt("stepSmoothNum");
		// sigma==0 all is smoothed
		// sigma==1 nothing is smoothed
		Scalarm sigma = cos(math::ToRad(par.getFloat("normalThr")));
		if (sigma < 0)
			sigma = 0;

		int  stepNormalNum = par.getInt("stepNormalNum");
		int  stepFitNum    = par.getInt("stepFitNum");
		bool selectedFlag  = par.getBool("Selected");
		for (int i = 0; i < stepSmoothNum; ++i) {
			tri::UpdateNormal<CMeshO>::PerFaceNormalized(m.cm);
			tri::Smooth<CMeshO>::VertexCoordPasoDoble(
				m.cm, stepNormalNum, sigma, stepFitNum, selectedFlag);
		}
		m.updateBoxAndNormals();
	} break;
	case FP_TAUBIN_SMOOTH: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		int     stepSmoothNum = par.getInt("stepSmoothNum");
		Scalarm lambda        = par.getFloat("lambda");
		Scalarm mu            = par.getFloat("mu");

		size_t cnt = tri::UpdateSelection<CMeshO>::VertexFromFaceStrict(m.cm);
		tri::Smooth<CMeshO>::VertexCoordTaubin(m.cm, stepSmoothNum, lambda, mu, cnt > 0, cb);
		log("Smoothed %d vertices", cnt > 0 ? cnt : m.cm.vn);
		m.updateBoxAndNormals();
	} break;
	case FP_RECOMPUTE_FACE_NORMAL: tri::UpdateNormal<CMeshO>::PerFace(m.cm); break;
	case FP_RECOMPUTE_QUADFACE_NORMAL:
		//            tri::UpdateNormal<CMeshO>::PerBitQuadFaceNormalized(m.cm);
		tri::UpdateNormal<CMeshO>::PerBitPolygonFaceNormalized(m.cm);
		break;
	case FP_RECOMPUTE_VERTEX_NORMAL: {
		/** ToDo: This filter should NEVER modify per face normals... **/
		int weightMode = par.getEnum("weightMode");
		switch (weightMode) {
		case WMP_AVG:
			tri::UpdateNormal<CMeshO>::NormalizePerFace(m.cm);
			tri::UpdateNormal<CMeshO>::PerVertexFromCurrentFaceNormal(m.cm);
			tri::UpdateNormal<CMeshO>::NormalizePerVertex(m.cm);
			break;
		case WMP_AREA:
			tri::UpdateNormal<CMeshO>::NormalizePerFaceByArea(m.cm);
			tri::UpdateNormal<CMeshO>::PerVertexFromCurrentFaceNormal(m.cm);
			tri::UpdateNormal<CMeshO>::NormalizePerVertex(m.cm);
			break;
		case WMP_ANGLE:
			tri::UpdateNormal<CMeshO>::PerVertexAngleWeighted(m.cm);
			tri::UpdateNormal<CMeshO>::NormalizePerVertex(m.cm);
			break;
		case WMP_AS_DEF:
			tri::UpdateNormal<CMeshO>::PerVertexNelsonMaxWeighted(m.cm);
			tri::UpdateNormal<CMeshO>::NormalizePerVertex(m.cm);
			break;
		default: break;
		}
	} break;
	case FP_FACE_NORMAL_NORMALIZE: tri::UpdateNormal<CMeshO>::NormalizePerFace(m.cm); break;
	case FP_VERTEX_NORMAL_NORMALIZE: tri::UpdateNormal<CMeshO>::NormalizePerVertex(m.cm); break;

	case FP_UNSHARP_NORMAL: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		Scalarm alpha      = par.getFloat("weight");
		Scalarm alphaorig  = par.getFloat("weightOrig");
		int     smoothIter = par.getInt("iterations");

		tri::Allocator<CMeshO>::CompactFaceVector(m.cm);
		vector<Point3m> normalOrig(m.cm.fn);

		// Save original normal per face
		for (int i = 0; i < m.cm.fn; ++i)
			normalOrig[i] = m.cm.face[i].cN();

		// Laplacian smooth of normal per face
		for (int i = 0; i < smoothIter; ++i)
			tri::Smooth<CMeshO>::FaceNormalLaplacianFF(m.cm);

		// Unsharp filter normal per face
		for (int i = 0; i < m.cm.fn; ++i)
			m.cm.face[i].N() =
				normalOrig[i] * alphaorig + (normalOrig[i] - m.cm.face[i].N()) * alpha;

	} break;
	case FP_UNSHARP_GEOMETRY: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		Scalarm alpha      = par.getFloat("weight");
		Scalarm alphaorig  = par.getFloat("weightOrig");
		int     smoothIter = par.getInt("iterations");

		tri::Allocator<CMeshO>::CompactVertexVector(m.cm);
		vector<Point3m> geomOrig(m.cm.vn);
		for (int i = 0; i < m.cm.vn; ++i)
			geomOrig[i] = m.cm.vert[i].P();

		tri::Smooth<CMeshO>::VertexCoordLaplacian(m.cm, smoothIter);

		for (int i = 0; i < m.cm.vn; ++i)
			m.cm.vert[i].P() = geomOrig[i] * alphaorig + (geomOrig[i] - m.cm.vert[i].P()) * alpha;

		m.updateBoxAndNormals();

	} break;
	case FP_UNSHARP_VERTEX_COLOR: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		Scalarm alpha      = par.getFloat("weight");
		Scalarm alphaorig  = par.getFloat("weightOrig");
		int     smoothIter = par.getInt("iterations");

		tri::Allocator<CMeshO>::CompactVertexVector(m.cm);
		vector<Color4f> colorOrig(m.cm.vn);
		for (int i = 0; i < m.cm.vn; ++i)
			colorOrig[i].Import(m.cm.vert[i].C());

		tri::Smooth<CMeshO>::VertexColorLaplacian(m.cm, smoothIter);
		for (int i = 0; i < m.cm.vn; ++i) {
			Color4f colorDelta = colorOrig[i] - Color4f::Construct(m.cm.vert[i].C());
			Color4f newCol     = colorOrig[i] * alphaorig + colorDelta * alpha; // Unsharp formula
			Clamp(newCol); // Clamp everything in the 0..1 range
			m.cm.vert[i].C().Import(newCol);
		}
	} break;
	case FP_UNSHARP_QUALITY: {
		tri::UpdateFlags<CMeshO>::FaceBorderFromNone(m.cm);
		Scalarm alpha      = par.getFloat("weight");
		Scalarm alphaorig  = par.getFloat("weightOrig");
		int     smoothIter = par.getInt("iterations");

		tri::Allocator<CMeshO>::CompactVertexVector(m.cm);
		vector<float> qualityOrig(m.cm.vn);
		for (int i = 0; i < m.cm.vn; ++i)
			qualityOrig[i] = m.cm.vert[i].Q();

		tri::Smooth<CMeshO>::VertexQualityLaplacian(m.cm, smoothIter);
		for (int i = 0; i < m.cm.vn; ++i) {
			float qualityDelta = qualityOrig[i] - m.cm.vert[i].Q();
			m.cm.vert[i].Q() = qualityOrig[i] * alphaorig + qualityDelta * alpha; // Unsharp formula
		}
	} break;

	case FP_LINEAR_MORPH: {
		CMeshO& targetMesh = md.getMesh(par.getMeshId("TargetMesh"))->cm;
		CMeshO& sourceMesh = m.cm;

		// if the numbers of vertices don't match up
		if (sourceMesh.vn != targetMesh.vn) {
			throw MLException(
				"Number of vertices is not the same so you can't morph between these two meshes.");
		}

		vcg::tri::Allocator<CMeshO>::CompactEveryVector(sourceMesh);
		vcg::tri::Allocator<CMeshO>::CompactEveryVector(targetMesh);
		Scalarm percentage = par.getDynamicFloat("PercentMorph") / 100.f;

		int i;
		for (i = 0; i < targetMesh.vn; ++i) {
			CMeshO::CoordType& srcP = sourceMesh.vert[i].P();
			CMeshO::CoordType& trgP = targetMesh.vert[i].P();
			srcP                    = srcP + (trgP - srcP) * percentage;
		}

		m.updateBoxAndNormals();
	} break;
	case FP_SCALAR_HARMONIC_FIELD: {
		typedef MESHLAB_SCALAR FieldScalar;
		md.mm()->updateDataMask(MeshModel::MM_FACEFACETOPO);

		cb(1, "Computing harmonic field...");

		CMeshO& m = md.mm()->cm;
		vcg::tri::Allocator<CMeshO>::CompactEveryVector(m);
		if (vcg::tri::Clean<CMeshO>::CountConnectedComponents(m) > 1) {
			throw MLException(
				"A mesh composed by a single connected component is required by the filter to "
				"properly work.");
		}
		if (vcg::tri::Clean<CMeshO>::CountNonManifoldEdgeFF(md.mm()->cm) > 0) {
			throw MLException(
				"Mesh has some not 2-manifold faces, this filter requires manifoldness");
		}
		if (vcg::tri::Clean<CMeshO>::CountNonManifoldVertexFF(md.mm()->cm) > 0) {
			throw MLException(
				"Mesh has some not 2-manifold vertices, this filter requires manifoldness");
		}

		md.mm()->updateDataMask(
			MeshModel::MM_VERTMARK | MeshModel::MM_FACEMARK | MeshModel::MM_FACEFLAG);
		// Get the two vertices with value set
		vcg::GridStaticPtr<CVertexO, Scalarm> vg;
		vg.Set(m.vert.begin(), m.vert.end());

		vcg::vertex::PointDistanceFunctor<Scalarm> pd;
		vcg::tri::Tmark<CMeshO, CVertexO>          mv;
		mv.SetMesh(&m);
		mv.UnMarkAll();
		Point3m   closestP;
		Scalarm   minDist = 0;
		CVertexO* vp0     = vcg::GridClosest(
			vg, pd, mv, par.getPoint3m("point1"), m.bbox.Diag(), minDist, closestP);
		CVertexO* vp1 = vcg::GridClosest(
			vg, pd, mv, par.getPoint3m("point2"), m.bbox.Diag(), minDist, closestP);
		if (vp0 == NULL || vp1 == NULL || vp0 == vp1) {
			throw MLException("Error occurred for selected points.");
		}

		vcg::tri::Harmonic<CMeshO, FieldScalar>::ConstraintVec constraints;
		constraints.push_back(vcg::tri::Harmonic<CMeshO, FieldScalar>::Constraint(
			vp0, FieldScalar(par.getFloat("value1"))));
		constraints.push_back(vcg::tri::Harmonic<CMeshO, FieldScalar>::Constraint(
			vp1, FieldScalar(par.getFloat("value2"))));

		CMeshO::PerVertexAttributeHandle<FieldScalar> handle =
			vcg::tri::Allocator<CMeshO>::GetPerVertexAttribute<FieldScalar>(m, "harmonic");

		bool ok =
			vcg::tri::Harmonic<CMeshO, FieldScalar>::ComputeScalarField(m, constraints, handle);

		if (!ok) {
			throw MLException("An error occurred.");
		}
		md.mm()->updateDataMask(MeshModel::MM_VERTQUALITY);
		for (auto vi = m.vert.begin(); vi != m.vert.end(); ++vi)
			vi->Q() = handle[vi];

		if (par.getBool("colorize")) {
			md.mm()->updateDataMask(MeshModel::MM_VERTCOLOR);
			vcg::tri::UpdateColor<CMeshO>::PerVertexQualityRamp(m);
		}

		cb(100, "Done.");
	} break;
	default: wrongActionCalled(filter);
	}
	return std::map<std::string, QVariant>();
}

FilterPlugin::FilterArity FilterUnsharp::filterArity(const QAction* filter) const
{
	switch (ID(filter)) {
	case FP_LAPLACIAN_SMOOTH:
	case FP_HC_LAPLACIAN_SMOOTH:
	case FP_SD_LAPLACIAN_SMOOTH:
	case FP_TWO_STEP_SMOOTH:
	case FP_TAUBIN_SMOOTH:
	case FP_DEPTH_SMOOTH:
	case FP_DIRECTIONAL_PRESERVATION_BLEND:
	case FP_CREASE_CUT:
	case FP_FACE_NORMAL_NORMALIZE:
	case FP_VERTEX_NORMAL_NORMALIZE:
	case FP_FACE_NORMAL_SMOOTHING:
	case FP_VERTEX_QUALITY_SMOOTHING:
	case FP_UNSHARP_NORMAL:
	case FP_UNSHARP_GEOMETRY:
	case FP_UNSHARP_QUALITY:
	case FP_UNSHARP_VERTEX_COLOR:
	case FP_RECOMPUTE_VERTEX_NORMAL:
	case FP_RECOMPUTE_FACE_NORMAL:
	case FP_RECOMPUTE_QUADFACE_NORMAL:
	case FP_SCALAR_HARMONIC_FIELD: return FilterPlugin::SINGLE_MESH;
	case FP_LINEAR_MORPH: return FilterPlugin::FIXED;
	}
	return FilterPlugin::NONE;
}

MESHLAB_PLUGIN_NAME_EXPORTER(FilterUnsharp)
