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/*
* 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 "BKE_pointcloud.h"
#include "BKE_spline.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "node_geometry_util.hh"
static bNodeSocketTemplate geo_node_curve_sample_points_in[] = {
{SOCK_GEOMETRY, N_("Curve")},
{SOCK_INT, N_("Count"), 10.0f, 0.0f, 0.0f, 0.0f, 0.0f, FLT_MAX},
{SOCK_FLOAT, N_("Length"), 0.1f, 0.0f, 0.0f, 0.0f, 0.0f, FLT_MAX, PROP_DISTANCE},
{-1, ""},
};
static bNodeSocketTemplate geo_node_curve_sample_points_out[] = {
{SOCK_GEOMETRY, N_("Points")},
{-1, ""},
};
static void geo_node_curve_sample_points_layout(uiLayout *layout,
bContext *UNUSED(C),
PointerRNA *ptr)
{
uiItemR(layout, ptr, "mode", UI_ITEM_R_EXPAND, nullptr, ICON_NONE);
}
static void geo_node_curve_sample_points_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeGeometryCurveSamplePoints *data = (NodeGeometryCurveSamplePoints *)MEM_callocN(
sizeof(NodeGeometryCurveSamplePoints), __func__);
data->mode = GEO_NODE_CURVE_SAMPLE_POINTS_LENGTH;
node->storage = data;
}
static void geo_node_curve_sample_points_update(bNodeTree *UNUSED(ntree), bNode *node)
{
NodeGeometryCurveSamplePoints &node_storage = *(NodeGeometryCurveSamplePoints *)node->storage;
const GeometryNodeCurveSamplePointsMode mode = (GeometryNodeCurveSamplePointsMode)
node_storage.mode;
bNodeSocket *count_socket = ((bNodeSocket *)node->inputs.first)->next;
bNodeSocket *length_socket = count_socket->next;
nodeSetSocketAvailability(count_socket, mode == GEO_NODE_CURVE_SAMPLE_POINTS_COUNT);
nodeSetSocketAvailability(length_socket, mode == GEO_NODE_CURVE_SAMPLE_POINTS_LENGTH);
}
namespace blender::nodes {
static void sample_points_from_spline(const Spline &spline,
const int offset,
const float sample_length,
PointCloudComponent &point_component)
{
}
static Array<int> get_result_point_offsets(const DCurve &curve,
const GeometryNodeCurveSamplePointsMode mode,
const int count,
const float length)
{
Array<int> offsets(curve.splines.size() + 1);
if (mode == GEO_NODE_CURVE_SAMPLE_POINTS_COUNT) {
for (const int i : curve.splines.index_range()) {
offsets[i] = count * i;
}
offsets.last() = curve.splines.size() * count;
}
else {
int offset = 0;
for (const int i : curve.splines.index_range()) {
offsets[i] = offset;
offset += curve.splines[i]->length() / length;
}
offsets.last() = offset;
}
return offsets;
}
static void geo_node_curve_sample_points_exec(GeoNodeExecParams params)
{
const GeometrySet input_geometry_set = params.extract_input<GeometrySet>("Curve");
const bNode &node = params.node();
const NodeGeometryCurveSamplePoints &node_storage = *(const NodeGeometryCurveSamplePoints *)
node.storage;
const GeometryNodeCurveSamplePointsMode mode = (GeometryNodeCurveSamplePointsMode)
node_storage.mode;
if (!input_geometry_set.has_curve()) {
params.set_output("Points", GeometrySet());
}
const DCurve &curve = *input_geometry_set.get_curve_for_read();
const int count = (mode == GEO_NODE_CURVE_SAMPLE_POINTS_COUNT) ?
params.extract_input<int>("Count") :
0;
const float length = (mode == GEO_NODE_CURVE_SAMPLE_POINTS_LENGTH) ?
params.extract_input<float>("Length") :
0.0f;
Array<int> offsets = get_result_point_offsets(curve, mode, count, length);
PointCloud *pointcloud = BKE_pointcloud_new_nomain(offsets.last());
GeometrySet result_geometry_set = GeometrySet::create_with_pointcloud(pointcloud);
PointCloudComponent &point_component =
result_geometry_set.get_component_for_write<PointCloudComponent>();
if (mode == GEO_NODE_CURVE_SAMPLE_POINTS_COUNT) {
const int count = params.extract_input<int>("Count");
for (const int i : curve.splines.index_range()) {
Spline &spline = *curve.splines[i];
sample_points_from_spline(spline, offsets[i], spline.length() / count, point_component);
}
}
else {
}
params.set_output("Geometry", result_geometry_set);
}
} // namespace blender::nodes
void register_node_type_geo_curve_sample_points()
{
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_CURVE_SAMPLE_POINTS, "Sample Curve Points", NODE_CLASS_GEOMETRY, 0);
node_type_socket_templates(
&ntype, geo_node_curve_sample_points_in, geo_node_curve_sample_points_out);
node_type_init(&ntype, geo_node_curve_sample_points_init);
node_type_update(&ntype, geo_node_curve_sample_points_update);
node_type_storage(
&ntype, "NodeGeometryCurveTrim", node_free_standard_storage, node_copy_standard_storage);
ntype.geometry_node_execute = blender::nodes::geo_node_curve_sample_points_exec;
ntype.draw_buttons = geo_node_curve_sample_points_layout;
nodeRegisterType(&ntype);
}
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