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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_spline.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "node_geometry_util.hh"
namespace blender::nodes {
static void geo_node_curve_primitive_bezier_segment_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Int>("Resolution").default_value(16).min(1).max(256).subtype(PROP_UNSIGNED);
b.add_input<decl::Vector>("Start").default_value({-1.0f, 0.0f, 0.0f}).subtype(PROP_TRANSLATION);
b.add_input<decl::Vector>("Start Handle")
.default_value({-0.5f, 0.5f, 0.0f})
.subtype(PROP_TRANSLATION);
b.add_input<decl::Vector>("End Handle").subtype(PROP_TRANSLATION);
b.add_input<decl::Vector>("End").default_value({1.0f, 0.0f, 0.0f}).subtype(PROP_TRANSLATION);
b.add_output<decl::Geometry>("Curve");
}
static void geo_node_curve_primitive_bezier_segment_layout(uiLayout *layout,
bContext *UNUSED(C),
PointerRNA *ptr)
{
uiItemR(layout, ptr, "mode", UI_ITEM_R_EXPAND, nullptr, ICON_NONE);
}
static void geo_node_curve_primitive_bezier_segment_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeGeometryCurvePrimitiveBezierSegment *data = (NodeGeometryCurvePrimitiveBezierSegment *)
MEM_callocN(sizeof(NodeGeometryCurvePrimitiveBezierSegment), __func__);
data->mode = GEO_NODE_CURVE_PRIMITIVE_BEZIER_SEGMENT_POSITION;
node->storage = data;
}
static std::unique_ptr<CurveEval> create_bezier_segment_curve(
const float3 start,
const float3 start_handle_right,
const float3 end,
const float3 end_handle_left,
const int resolution,
const GeometryNodeCurvePrimitiveBezierSegmentMode mode)
{
std::unique_ptr<CurveEval> curve = std::make_unique<CurveEval>();
std::unique_ptr<BezierSpline> spline = std::make_unique<BezierSpline>();
if (mode == GEO_NODE_CURVE_PRIMITIVE_BEZIER_SEGMENT_POSITION) {
spline->add_point(start,
BezierSpline::HandleType::Align,
2.0f * start - start_handle_right,
BezierSpline::HandleType::Align,
start_handle_right,
1.0f,
0.0f);
spline->add_point(end,
BezierSpline::HandleType::Align,
end_handle_left,
BezierSpline::HandleType::Align,
2.0f * end - end_handle_left,
1.0f,
0.0f);
}
else {
spline->add_point(start,
BezierSpline::HandleType::Align,
start - start_handle_right,
BezierSpline::HandleType::Align,
start + start_handle_right,
1.0f,
0.0f);
spline->add_point(end,
BezierSpline::HandleType::Align,
end + end_handle_left,
BezierSpline::HandleType::Align,
end - end_handle_left,
1.0f,
0.0f);
}
spline->set_resolution(resolution);
spline->attributes.reallocate(spline->size());
curve->add_spline(std::move(spline));
curve->attributes.reallocate(curve->splines().size());
return curve;
}
static void geo_node_curve_primitive_bezier_segment_exec(GeoNodeExecParams params)
{
const NodeGeometryCurvePrimitiveBezierSegment *node_storage =
(NodeGeometryCurvePrimitiveBezierSegment *)params.node().storage;
const GeometryNodeCurvePrimitiveBezierSegmentMode mode =
(const GeometryNodeCurvePrimitiveBezierSegmentMode)node_storage->mode;
std::unique_ptr<CurveEval> curve = create_bezier_segment_curve(
params.extract_input<float3>("Start"),
params.extract_input<float3>("Start Handle"),
params.extract_input<float3>("End"),
params.extract_input<float3>("End Handle"),
std::max(params.extract_input<int>("Resolution"), 1),
mode);
params.set_output("Curve", GeometrySet::create_with_curve(curve.release()));
}
} // namespace blender::nodes
void register_node_type_geo_curve_primitive_bezier_segment()
{
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_CURVE_PRIMITIVE_BEZIER_SEGMENT, "Bezier Segment", NODE_CLASS_GEOMETRY, 0);
node_type_init(&ntype, blender::nodes::geo_node_curve_primitive_bezier_segment_init);
node_type_storage(&ntype,
"NodeGeometryCurvePrimitiveBezierSegment",
node_free_standard_storage,
node_copy_standard_storage);
ntype.declare = blender::nodes::geo_node_curve_primitive_bezier_segment_declare;
ntype.draw_buttons = blender::nodes::geo_node_curve_primitive_bezier_segment_layout;
ntype.geometry_node_execute = blender::nodes::geo_node_curve_primitive_bezier_segment_exec;
nodeRegisterType(&ntype);
}
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