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From cfd569a8414e2a7c9edc0576da8b84970fb01525 Mon Sep 17 00:00:00 2001
From: Bart Janssens <bart@bartjanssens.org>
Date: Tue, 24 Jul 2018 15:53:35 +0200
Subject: [PATCH 11/16] ENH: Add SelectPointsAboveNumber tool

---
 modules/selection/module.cpp                  |   3 +-
 .../selection/select_points_above_number.cpp  | 100 ++++++++++++++++++
 2 files changed, 102 insertions(+), 1 deletion(-)
 create mode 100644 modules/selection/select_points_above_number.cpp

diff --git a/modules/selection/module.cpp b/modules/selection/module.cpp
index 1464eac2..5b3c326a 100644
--- a/modules/selection/module.cpp
+++ b/modules/selection/module.cpp
@@ -57,6 +57,7 @@ extern k3d::iplugin_factory& select_n_sided_factory();
 extern k3d::iplugin_factory& select_nurbs_curve_by_number_factory();
 extern k3d::iplugin_factory& select_nurbs_patch_by_number_factory();
 extern k3d::iplugin_factory& select_point_by_number_factory();
+extern k3d::iplugin_factory &select_points_above_number_factory();
 
 } // namespace selection
 
@@ -90,5 +91,5 @@ K3D_MODULE_START(Registry)
 	Registry.register_factory(module::selection::select_nurbs_curve_by_number_factory());
 	Registry.register_factory(module::selection::select_nurbs_patch_by_number_factory());
 	Registry.register_factory(module::selection::select_point_by_number_factory());
+	Registry.register_factory(module::selection::select_points_above_number_factory());
 K3D_MODULE_END
-
diff --git a/modules/selection/select_points_above_number.cpp b/modules/selection/select_points_above_number.cpp
new file mode 100644
index 00000000..d999e833
--- /dev/null
+++ b/modules/selection/select_points_above_number.cpp
@@ -0,0 +1,100 @@
+// K-3D
+// Copyright (c) 1995-2005, Timothy M. Shead
+//
+// Contact: tshead@k-3d.com
+//
+// 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+/** \file
+	\author Timothy M. Shead (tshead@k-3d.com)
+	\author Romain Behar (romainbehar@yahoo.com)
+*/
+
+#include <k3d-i18n-config.h>
+#include <k3dsdk/document_plugin_factory.h>
+#include <k3dsdk/measurement.h>
+#include <k3dsdk/mesh_selection_modifier.h>
+#include <k3dsdk/node.h>
+
+namespace module
+{
+
+namespace selection
+{
+
+/////////////////////////////////////////////////////////////////////////////
+// select_points_above_number
+
+class select_points_above_number :
+	public k3d::mesh_selection_modifier<k3d::node>
+{
+	typedef k3d::mesh_selection_modifier<k3d::node> base;
+
+public:
+	select_points_above_number(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
+		base(Factory, Document),
+		m_index(init_owner(*this) + init_name("index") + init_label(_("Point Index")) + init_description(_("Point Index")) + init_value(0L) + init_step_increment(1) + init_units(typeid(k3d::measurement::scalar)))
+	{
+		m_index.changed_signal().connect(k3d::hint::converter<
+			k3d::hint::convert<k3d::hint::any, k3d::hint::selection_changed> >(make_update_mesh_slot()));
+	}
+
+	void on_update_selection(const k3d::mesh& Input, k3d::mesh& Output)
+	{
+		if(Output.point_selection)
+		{
+			k3d::mesh::selection_t& point_selection = Output.point_selection.writable();
+			std::fill(point_selection.begin(), point_selection.end(), 0.0);
+
+			const k3d::int32_t index = m_index.pipeline_value();
+      const k3d::int32_t npoints = point_selection.size();
+      for(k3d::int32_t pt_idx = 0; pt_idx != npoints; ++pt_idx)
+      {
+        if(pt_idx >= index)
+          point_selection[pt_idx] = 1.0;
+      }
+		}
+	}
+
+	static k3d::iplugin_factory& get_factory()
+	{
+		static k3d::document_plugin_factory<select_points_above_number,
+			k3d::interface_list<k3d::imesh_source,
+			k3d::interface_list<k3d::imesh_sink> > > factory(
+				k3d::uuid(0x01c131dc, 0x821c4bf1, 0xba13bb1e, 0xc73af3a5),
+				"SelectPointsAboveNumber",
+				"Selects all points with an index above or equal to the given number",
+				"Selection",
+				k3d::iplugin_factory::STABLE);
+
+		return factory;
+	}
+
+private:
+	k3d_data(k3d::int32_t, immutable_name, change_signal, with_undo, local_storage, no_constraint, measurement_property, with_serialization) m_index;
+};
+
+/////////////////////////////////////////////////////////////////////////////
+// select_points_above_number_factory
+
+k3d::iplugin_factory& select_points_above_number_factory()
+{
+	return select_points_above_number::get_factory();
+}
+
+} // namespace selection
+
+} // namespace module
+
-- 
2.20.1