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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_set_curve_handles_cc {
NODE_STORAGE_FUNCS(NodeGeometrySetCurveHandlePositions)
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Geometry>(N_("Curve")).supported_type(GEO_COMPONENT_TYPE_CURVE);
b.add_input<decl::Bool>(N_("Selection")).default_value(true).hide_value().supports_field();
b.add_input<decl::Vector>(N_("Position")).implicit_field();
b.add_input<decl::Vector>(N_("Offset")).default_value(float3(0.0f, 0.0f, 0.0f)).supports_field();
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)
{
NodeGeometrySetCurveHandlePositions *data = MEM_cnew<NodeGeometrySetCurveHandlePositions>(
__func__);
data->mode = GEO_NODE_CURVE_HANDLE_LEFT;
node->storage = data;
}
static void set_position_in_component(const GeometryNodeCurveHandleMode mode,
GeometryComponent &component,
const Field<bool> &selection_field,
const Field<float3> &position_field,
const Field<float3> &offset_field)
{
GeometryComponentFieldContext field_context{component, ATTR_DOMAIN_POINT};
const int domain_size = component.attribute_domain_size(ATTR_DOMAIN_POINT);
if (domain_size == 0) {
return;
}
fn::FieldEvaluator evaluator{field_context, domain_size};
evaluator.set_selection(selection_field);
evaluator.add(position_field);
evaluator.add(offset_field);
evaluator.evaluate();
const IndexMask selection = evaluator.get_evaluated_selection_as_mask();
CurveComponent *curve_component = static_cast<CurveComponent *>(&component);
CurveEval *curve = curve_component->get_for_write();
StringRef side = mode & GEO_NODE_CURVE_HANDLE_LEFT ? "handle_left" : "handle_right";
int current_point = 0;
int current_mask = 0;
for (const SplinePtr &spline : curve->splines()) {
if (spline->type() == Spline::Type::Bezier) {
BezierSpline &bezier = static_cast<BezierSpline &>(*spline);
for (int i : bezier.positions().index_range()) {
if (current_mask < selection.size() && selection[current_mask] == current_point) {
if (mode & GEO_NODE_CURVE_HANDLE_LEFT) {
if (bezier.handle_types_left()[i] == BezierSpline::HandleType::Vector) {
bezier.ensure_auto_handles();
bezier.handle_types_left()[i] = BezierSpline::HandleType::Free;
}
else if (bezier.handle_types_left()[i] == BezierSpline::HandleType::Auto) {
bezier.ensure_auto_handles();
bezier.handle_types_left()[i] = BezierSpline::HandleType::Align;
}
}
else {
if (bezier.handle_types_right()[i] == BezierSpline::HandleType::Vector) {
bezier.ensure_auto_handles();
bezier.handle_types_right()[i] = BezierSpline::HandleType::Free;
}
else if (bezier.handle_types_right()[i] == BezierSpline::HandleType::Auto) {
bezier.ensure_auto_handles();
bezier.handle_types_right()[i] = BezierSpline::HandleType::Align;
}
}
current_mask++;
}
current_point++;
}
}
else {
for (int UNUSED(i) : spline->positions().index_range()) {
if (current_mask < selection.size() && selection[current_mask] == current_point) {
current_mask++;
}
current_point++;
}
}
}
const VArray<float3> &positions_input = evaluator.get_evaluated<float3>(0);
const VArray<float3> &offsets_input = evaluator.get_evaluated<float3>(1);
OutputAttribute_Typed<float3> positions = component.attribute_try_get_for_output<float3>(
side, ATTR_DOMAIN_POINT, {0, 0, 0});
MutableSpan<float3> position_mutable = positions.as_span();
for (int i : selection) {
position_mutable[i] = positions_input[i] + offsets_input[i];
}
positions.save();
}
static void node_geo_exec(GeoNodeExecParams params)
{
const NodeGeometrySetCurveHandlePositions &storage = node_storage(params.node());
const GeometryNodeCurveHandleMode mode = (GeometryNodeCurveHandleMode)storage.mode;
GeometrySet geometry_set = params.extract_input<GeometrySet>("Curve");
Field<bool> selection_field = params.extract_input<Field<bool>>("Selection");
Field<float3> position_field = params.extract_input<Field<float3>>("Position");
Field<float3> offset_field = params.extract_input<Field<float3>>("Offset");
bool has_bezier = false;
geometry_set.modify_geometry_sets([&](GeometrySet &geometry_set) {
if (geometry_set.has_curve() &&
geometry_set.get_curve_for_read()->has_spline_with_type(Spline::Type::Bezier)) {
has_bezier = true;
set_position_in_component(mode,
geometry_set.get_component_for_write<CurveComponent>(),
selection_field,
position_field,
offset_field);
}
});
if (!has_bezier) {
params.error_message_add(NodeWarningType::Info,
TIP_("The input geometry does not contain a Bezier spline"));
}
params.set_output("Curve", std::move(geometry_set));
}
} // namespace blender::nodes::node_geo_set_curve_handles_cc
void register_node_type_geo_set_curve_handles()
{
namespace file_ns = blender::nodes::node_geo_set_curve_handles_cc;
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_SET_CURVE_HANDLES, "Set Handle Positions", NODE_CLASS_GEOMETRY);
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.declare = file_ns::node_declare;
ntype.minwidth = 100.0f;
node_type_init(&ntype, file_ns::node_init);
node_type_storage(&ntype,
"NodeGeometrySetCurveHandlePositions",
node_free_standard_storage,
node_copy_standard_storage);
ntype.draw_buttons = file_ns::node_layout;
nodeRegisterType(&ntype);
}
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