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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::node_geo_curve_primitive_bezier_segment_cc {
NODE_STORAGE_FUNCS(NodeGeometryCurvePrimitiveBezierSegment)
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Int>(N_("Resolution"))
.default_value(16)
.min(1)
.max(256)
.subtype(PROP_UNSIGNED)
.description(N_("The number of evaluated points on the curve"));
b.add_input<decl::Vector>(N_("Start"))
.default_value({-1.0f, 0.0f, 0.0f})
.subtype(PROP_TRANSLATION)
.description(N_("Position of the start control point of the curve"));
b.add_input<decl::Vector>(N_("Start Handle"))
.default_value({-0.5f, 0.5f, 0.0f})
.subtype(PROP_TRANSLATION)
.description(
N_("Position of the start handle used to define the shape of the curve. In Offset mode, "
"relative to Start point"));
b.add_input<decl::Vector>(N_("End Handle"))
.subtype(PROP_TRANSLATION)
.description(
N_("Position of the end handle used to define the shape of the curve. In Offset mode, "
"relative to End point"));
b.add_input<decl::Vector>(N_("End"))
.default_value({1.0f, 0.0f, 0.0f})
.subtype(PROP_TRANSLATION)
.description(N_("Position of the end control point of the curve"));
b.add_output<decl::Geometry>(N_("Curve"));
}
static void node_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
{
uiItemR(layout, ptr, "mode", UI_ITEM_R_EXPAND, nullptr, ICON_NONE);
}
static void node_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeGeometryCurvePrimitiveBezierSegment *data =
MEM_cnew<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>();
spline->set_resolution(resolution);
spline->resize(2);
MutableSpan<float3> positions = spline->positions();
spline->handle_types_left().fill(BezierSpline::HandleType::Align);
spline->handle_types_right().fill(BezierSpline::HandleType::Align);
spline->radii().fill(1.0f);
spline->tilts().fill(0.0f);
positions.first() = start;
positions.last() = end;
if (mode == GEO_NODE_CURVE_PRIMITIVE_BEZIER_SEGMENT_POSITION) {
spline->set_handle_position_right(0, start_handle_right);
spline->set_handle_position_left(1, end_handle_left);
}
else {
spline->set_handle_position_right(0, start + start_handle_right);
spline->set_handle_position_left(1, end + end_handle_left);
}
curve->add_spline(std::move(spline));
curve->attributes.reallocate(1);
return curve;
}
static void node_geo_exec(GeoNodeExecParams params)
{
const NodeGeometryCurvePrimitiveBezierSegment &storage = node_storage(params.node());
const GeometryNodeCurvePrimitiveBezierSegmentMode mode =
(const GeometryNodeCurvePrimitiveBezierSegmentMode)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::node_geo_curve_primitive_bezier_segment_cc
void register_node_type_geo_curve_primitive_bezier_segment()
{
namespace file_ns = blender::nodes::node_geo_curve_primitive_bezier_segment_cc;
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_CURVE_PRIMITIVE_BEZIER_SEGMENT, "Bezier Segment", NODE_CLASS_GEOMETRY);
node_type_init(&ntype, file_ns::node_init);
node_type_storage(&ntype,
"NodeGeometryCurvePrimitiveBezierSegment",
node_free_standard_storage,
node_copy_standard_storage);
ntype.declare = file_ns::node_declare;
ntype.draw_buttons = file_ns::node_layout;
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
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