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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BKE_curves.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 * /*C*/, PointerRNA *ptr)
{
uiItemR(layout, ptr, "mode", UI_ITEM_R_EXPAND, nullptr, ICON_NONE);
}
static void node_init(bNodeTree * /*tree*/, bNode *node)
{
NodeGeometryCurvePrimitiveBezierSegment *data =
MEM_cnew<NodeGeometryCurvePrimitiveBezierSegment>(__func__);
data->mode = GEO_NODE_CURVE_PRIMITIVE_BEZIER_SEGMENT_POSITION;
node->storage = data;
}
static Curves *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)
{
Curves *curves_id = bke::curves_new_nomain_single(2, CURVE_TYPE_BEZIER);
bke::CurvesGeometry &curves = bke::CurvesGeometry::wrap(curves_id->geometry);
curves.resolution_for_write().fill(resolution);
MutableSpan<float3> positions = curves.positions_for_write();
curves.handle_types_left_for_write().fill(BEZIER_HANDLE_ALIGN);
curves.handle_types_right_for_write().fill(BEZIER_HANDLE_ALIGN);
positions.first() = start;
positions.last() = end;
MutableSpan<float3> handles_right = curves.handle_positions_right_for_write();
MutableSpan<float3> handles_left = curves.handle_positions_left_for_write();
if (mode == GEO_NODE_CURVE_PRIMITIVE_BEZIER_SEGMENT_POSITION) {
handles_left.first() = 2.0f * start - start_handle_right;
handles_right.first() = start_handle_right;
handles_left.last() = end_handle_left;
handles_right.last() = 2.0f * end - end_handle_left;
}
else {
handles_left.first() = start - start_handle_right;
handles_right.first() = start + start_handle_right;
handles_left.last() = end + end_handle_left;
handles_right.last() = end - end_handle_left;
}
return curves_id;
}
static void node_geo_exec(GeoNodeExecParams params)
{
const NodeGeometryCurvePrimitiveBezierSegment &storage = node_storage(params.node());
const GeometryNodeCurvePrimitiveBezierSegmentMode mode =
(const GeometryNodeCurvePrimitiveBezierSegmentMode)storage.mode;
Curves *curves = 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_curves(curves));
}
} // 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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