diff options
author | Johnny Matthews <guitargeek> | 2021-07-22 17:55:50 +0300 |
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committer | Hans Goudey <h.goudey@me.com> | 2021-07-22 17:55:50 +0300 |
commit | 0e8d1c6bcfcf232b94346af69a216bc4bc413b84 (patch) | |
tree | f01839d2eccda95e5d66c55ea8785a4538b508e0 /source/blender/nodes/geometry | |
parent | 320f34af86eb4ad4466fb4ef40baa1cf3fd0c617 (diff) |
Geometry Nodes: Set Bezier Handle Type Node
This node takes a curve and a point selection and allows you to set the
specified (or all) points left/right or both handles to a given type.
Differential Revision: https://developer.blender.org/D11992
Diffstat (limited to 'source/blender/nodes/geometry')
-rw-r--r-- | source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc new file mode 100644 index 00000000000..96987df9de3 --- /dev/null +++ b/source/blender/nodes/geometry/nodes/node_geo_curve_set_handles.cc @@ -0,0 +1,143 @@ +/* + * 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" + +static bNodeSocketTemplate geo_node_curve_set_handles_in[] = { + {SOCK_GEOMETRY, N_("Curve")}, + {SOCK_STRING, N_("Selection")}, + {-1, ""}, +}; + +static bNodeSocketTemplate geo_node_curve_set_handles_out[] = { + {SOCK_GEOMETRY, N_("Curve")}, + {-1, ""}, +}; + +static void geo_node_curve_set_handles_layout(uiLayout *layout, + bContext *UNUSED(C), + PointerRNA *ptr) +{ + uiItemR(layout, ptr, "mode", UI_ITEM_R_EXPAND, nullptr, ICON_NONE); + uiItemR(layout, ptr, "handle_type", 0, "", ICON_NONE); +} + +namespace blender::nodes { + +static void geo_node_curve_set_handles_init(bNodeTree *UNUSED(tree), bNode *node) +{ + NodeGeometryCurveSetHandles *data = (NodeGeometryCurveSetHandles *)MEM_callocN( + sizeof(NodeGeometryCurveSetHandles), __func__); + + data->handle_type = GEO_NODE_CURVE_HANDLE_AUTO; + data->mode = GEO_NODE_CURVE_HANDLE_LEFT | GEO_NODE_CURVE_HANDLE_RIGHT; + node->storage = data; +} + +static BezierSpline::HandleType handle_type_from_input_type(GeometryNodeCurveHandleType type) +{ + switch (type) { + case GEO_NODE_CURVE_HANDLE_AUTO: + return BezierSpline::HandleType::Auto; + case GEO_NODE_CURVE_HANDLE_ALIGN: + return BezierSpline::HandleType::Align; + case GEO_NODE_CURVE_HANDLE_FREE: + return BezierSpline::HandleType::Free; + case GEO_NODE_CURVE_HANDLE_VECTOR: + return BezierSpline::HandleType::Vector; + } + BLI_assert_unreachable(); + return BezierSpline::HandleType::Auto; +} + +static void geo_node_curve_set_handles_exec(GeoNodeExecParams params) +{ + const NodeGeometryCurveSetHandles *node_storage = + (NodeGeometryCurveSetHandles *)params.node().storage; + const GeometryNodeCurveHandleType type = (GeometryNodeCurveHandleType)node_storage->handle_type; + const GeometryNodeCurveHandleMode mode = (GeometryNodeCurveHandleMode)node_storage->mode; + + GeometrySet geometry_set = params.extract_input<GeometrySet>("Curve"); + geometry_set = bke::geometry_set_realize_instances(geometry_set); + if (!geometry_set.has_curve()) { + params.set_output("Curve", geometry_set); + return; + } + + /* Retrieve data for write access so we can avoid new allocations for the handles data. */ + CurveComponent &curve_component = geometry_set.get_component_for_write<CurveComponent>(); + CurveEval &curve = *curve_component.get_for_write(); + MutableSpan<SplinePtr> splines = curve.splines(); + + const std::string selection_name = params.extract_input<std::string>("Selection"); + GVArray_Typed<bool> selection = curve_component.attribute_get_for_read( + selection_name, ATTR_DOMAIN_POINT, true); + + const BezierSpline::HandleType new_handle_type = handle_type_from_input_type(type); + int point_index = 0; + bool has_bezier_spline = false; + for (SplinePtr &spline : splines) { + if (spline->type() != Spline::Type::Bezier) { + point_index += spline->positions().size(); + continue; + } + + BezierSpline &bezier_spline = static_cast<BezierSpline &>(*spline); + has_bezier_spline = true; + for (int i_point : IndexRange(bezier_spline.size())) { + if (selection[point_index]) { + if (mode & GEO_NODE_CURVE_HANDLE_LEFT) { + bezier_spline.handle_types_left()[i_point] = new_handle_type; + } + if (mode & GEO_NODE_CURVE_HANDLE_RIGHT) { + bezier_spline.handle_types_right()[i_point] = new_handle_type; + } + } + point_index++; + } + bezier_spline.mark_cache_invalid(); + } + + if (!has_bezier_spline) { + params.error_message_add(NodeWarningType::Info, TIP_("No Bezier splines in input curve")); + } + + params.set_output("Curve", geometry_set); +} +} // namespace blender::nodes + +void register_node_type_geo_curve_set_handles() +{ + static bNodeType ntype; + geo_node_type_base( + &ntype, GEO_NODE_CURVE_SET_HANDLES, "Set Handle Type", NODE_CLASS_GEOMETRY, 0); + node_type_socket_templates( + &ntype, geo_node_curve_set_handles_in, geo_node_curve_set_handles_out); + ntype.geometry_node_execute = blender::nodes::geo_node_curve_set_handles_exec; + node_type_init(&ntype, blender::nodes::geo_node_curve_set_handles_init); + node_type_storage(&ntype, + "NodeGeometryCurveSetHandles", + node_free_standard_storage, + node_copy_standard_storage); + ntype.draw_buttons = geo_node_curve_set_handles_layout; + + nodeRegisterType(&ntype); +} |