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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BKE_curves.hh"
#include "BLI_task.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "NOD_socket_search_link.hh"
#include "GEO_trim_curves.hh"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_curve_trim_cc {
NODE_STORAGE_FUNCS(NodeGeometryCurveTrim)
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Curve")).supported_type(GEO_COMPONENT_TYPE_CURVE);
b.add_input<decl::Float>(N_("Start"))
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR)
.make_available([](bNode &node) { node_storage(node).mode = GEO_NODE_CURVE_SAMPLE_FACTOR; })
.supports_field();
b.add_input<decl::Float>(N_("End"))
.min(0.0f)
.max(1.0f)
.default_value(1.0f)
.subtype(PROP_FACTOR)
.make_available([](bNode &node) { node_storage(node).mode = GEO_NODE_CURVE_SAMPLE_FACTOR; })
.supports_field();
b.add_input<decl::Float>(N_("Start"), "Start_001")
.min(0.0f)
.subtype(PROP_DISTANCE)
.make_available([](bNode &node) { node_storage(node).mode = GEO_NODE_CURVE_SAMPLE_LENGTH; })
.supports_field();
b.add_input<decl::Float>(N_("End"), "End_001")
.min(0.0f)
.default_value(1.0f)
.subtype(PROP_DISTANCE)
.make_available([](bNode &node) { node_storage(node).mode = GEO_NODE_CURVE_SAMPLE_LENGTH; })
.supports_field();
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)
{
NodeGeometryCurveTrim *data = MEM_cnew<NodeGeometryCurveTrim>(__func__);
data->mode = GEO_NODE_CURVE_SAMPLE_FACTOR;
node->storage = data;
}
static void node_update(bNodeTree *ntree, bNode *node)
{
const NodeGeometryCurveTrim &storage = node_storage(*node);
const GeometryNodeCurveSampleMode mode = (GeometryNodeCurveSampleMode)storage.mode;
bNodeSocket *start_fac = static_cast<bNodeSocket *>(node->inputs.first)->next;
bNodeSocket *end_fac = start_fac->next;
bNodeSocket *start_len = end_fac->next;
bNodeSocket *end_len = start_len->next;
nodeSetSocketAvailability(ntree, start_fac, mode == GEO_NODE_CURVE_SAMPLE_FACTOR);
nodeSetSocketAvailability(ntree, end_fac, mode == GEO_NODE_CURVE_SAMPLE_FACTOR);
nodeSetSocketAvailability(ntree, start_len, mode == GEO_NODE_CURVE_SAMPLE_LENGTH);
nodeSetSocketAvailability(ntree, end_len, mode == GEO_NODE_CURVE_SAMPLE_LENGTH);
}
class SocketSearchOp {
public:
StringRef socket_name;
GeometryNodeCurveSampleMode mode;
void operator()(LinkSearchOpParams ¶ms)
{
bNode &node = params.add_node("GeometryNodeTrimCurve");
node_storage(node).mode = mode;
params.update_and_connect_available_socket(node, socket_name);
}
};
static void node_gather_link_searches(GatherLinkSearchOpParams ¶ms)
{
const NodeDeclaration &declaration = *params.node_type().fixed_declaration;
search_link_ops_for_declarations(params, declaration.outputs());
search_link_ops_for_declarations(params, declaration.inputs().take_front(1));
if (params.in_out() == SOCK_IN) {
if (params.node_tree().typeinfo->validate_link(eNodeSocketDatatype(params.other_socket().type),
SOCK_FLOAT)) {
params.add_item(IFACE_("Start (Factor)"),
SocketSearchOp{"Start", GEO_NODE_CURVE_SAMPLE_FACTOR});
params.add_item(IFACE_("End (Factor)"), SocketSearchOp{"End", GEO_NODE_CURVE_SAMPLE_FACTOR});
params.add_item(IFACE_("Start (Length)"),
SocketSearchOp{"Start", GEO_NODE_CURVE_SAMPLE_LENGTH});
params.add_item(IFACE_("End (Length)"), SocketSearchOp{"End", GEO_NODE_CURVE_SAMPLE_LENGTH});
}
}
}
static void geometry_set_curve_trim(GeometrySet &geometry_set,
const GeometryNodeCurveSampleMode mode,
Field<float> &start_field,
Field<float> &end_field)
{
if (!geometry_set.has_curves()) {
return;
}
const Curves &src_curves_id = *geometry_set.get_curves_for_read();
const bke::CurvesGeometry &src_curves = bke::CurvesGeometry::wrap(src_curves_id.geometry);
if (src_curves.curves_num() == 0) {
return;
}
bke::CurvesFieldContext field_context{src_curves, ATTR_DOMAIN_CURVE};
fn::FieldEvaluator evaluator{field_context, src_curves.curves_num()};
evaluator.add(start_field);
evaluator.add(end_field);
evaluator.evaluate();
const VArray<float> starts = evaluator.get_evaluated<float>(0);
const VArray<float> ends = evaluator.get_evaluated<float>(1);
const VArray<bool> cyclic = src_curves.cyclic();
/* If node length input is on form [0, 1] instead of [0, length]*/
const bool normalized_length_lookup = mode == GEO_NODE_CURVE_SAMPLE_FACTOR;
/* Stack start + end field. */
Vector<float> length_factors(src_curves.curves_num() * 2);
Vector<int64_t> lookup_indices(src_curves.curves_num() * 2);
threading::parallel_for(src_curves.curves_range(), 512, [&](IndexRange curve_range) {
for (const int64_t curve_i : curve_range) {
const bool negative_trim = !cyclic[curve_i] && starts[curve_i] > ends[curve_i];
length_factors[curve_i] = starts[curve_i];
length_factors[curve_i + src_curves.curves_num()] = negative_trim ? starts[curve_i] :
ends[curve_i];
lookup_indices[curve_i] = curve_i;
lookup_indices[curve_i + src_curves.curves_num()] = curve_i;
}
});
/* Create curve trim lookup table. */
Array<bke::curves::CurvePoint, 12> point_lookups = geometry::lookup_curve_points(
src_curves, length_factors, lookup_indices, normalized_length_lookup);
bke::CurvesGeometry dst_curves = geometry::trim_curves(
src_curves,
src_curves.curves_range().as_span(),
point_lookups.as_span().slice(0, src_curves.curves_num()),
point_lookups.as_span().slice(src_curves.curves_num(), src_curves.curves_num()));
Curves *dst_curves_id = bke::curves_new_nomain(std::move(dst_curves));
bke::curves_copy_parameters(src_curves_id, *dst_curves_id);
geometry_set.replace_curves(dst_curves_id);
}
static void node_geo_exec(GeoNodeExecParams params)
{
const NodeGeometryCurveTrim &storage = node_storage(params.node());
const GeometryNodeCurveSampleMode mode = (GeometryNodeCurveSampleMode)storage.mode;
GeometrySet geometry_set = params.extract_input<GeometrySet>("Curve");
GeometryComponentEditData::remember_deformed_curve_positions_if_necessary(geometry_set);
if (mode == GEO_NODE_CURVE_SAMPLE_FACTOR) {
Field<float> start_field = params.extract_input<Field<float>>("Start");
Field<float> end_field = params.extract_input<Field<float>>("End");
geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
geometry_set_curve_trim(geometry_set, mode, start_field, end_field);
});
}
else if (mode == GEO_NODE_CURVE_SAMPLE_LENGTH) {
Field<float> start_field = params.extract_input<Field<float>>("Start_001");
Field<float> end_field = params.extract_input<Field<float>>("End_001");
geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
geometry_set_curve_trim(geometry_set, mode, start_field, end_field);
});
}
params.set_output("Curve", std::move(geometry_set));
}
} // namespace blender::nodes::node_geo_curve_trim_cc
void register_node_type_geo_curve_trim()
{
namespace file_ns = blender::nodes::node_geo_curve_trim_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_TRIM_CURVE, "Trim Curve", NODE_CLASS_GEOMETRY);
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.draw_buttons = file_ns::node_layout;
ntype.declare = file_ns::node_declare;
node_type_storage(
&ntype, "NodeGeometryCurveTrim", node_free_standard_storage, node_copy_standard_storage);
node_type_init(&ntype, file_ns::node_init);
node_type_update(&ntype, file_ns::node_update);
ntype.gather_link_search_ops = file_ns::node_gather_link_searches;
nodeRegisterType(&ntype);
}
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