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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 {
static void geo_node_curve_handle_type_selection_declare(NodeDeclarationBuilder &b)
{
b.add_output<decl::Bool>("Selection").field_source();
}
static void geo_node_curve_handle_type_selection_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);
}
static void geo_node_curve_handle_type_selection_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeGeometryCurveSelectHandles *data = (NodeGeometryCurveSelectHandles *)MEM_callocN(
sizeof(NodeGeometryCurveSelectHandles), __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(const 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 select_by_handle_type(const CurveEval &curve,
const BezierSpline::HandleType type,
const GeometryNodeCurveHandleMode mode,
const MutableSpan<bool> r_selection)
{
int offset = 0;
for (const SplinePtr &spline : curve.splines()) {
if (spline->type() != Spline::Type::Bezier) {
r_selection.slice(offset, spline->size()).fill(false);
offset += spline->size();
}
else {
BezierSpline *b = static_cast<BezierSpline *>(spline.get());
for (int i : IndexRange(b->size())) {
r_selection[offset++] = (mode & GEO_NODE_CURVE_HANDLE_LEFT &&
b->handle_types_left()[i] == type) ||
(mode & GEO_NODE_CURVE_HANDLE_RIGHT &&
b->handle_types_right()[i] == type);
}
}
}
}
class HandleTypeFieldInput final : public fn::FieldInput {
BezierSpline::HandleType type_;
GeometryNodeCurveHandleMode mode_;
public:
HandleTypeFieldInput(BezierSpline::HandleType type, GeometryNodeCurveHandleMode mode)
: FieldInput(CPPType::get<bool>(), "Selection"), type_(type), mode_(mode)
{
}
const GVArray *get_varray_for_context(const fn::FieldContext &context,
IndexMask mask,
ResourceScope &scope) const final
{
if (const GeometryComponentFieldContext *geometry_context =
dynamic_cast<const GeometryComponentFieldContext *>(&context)) {
const GeometryComponent &component = geometry_context->geometry_component();
const AttributeDomain domain = geometry_context->domain();
if (component.type() != GEO_COMPONENT_TYPE_CURVE) {
return nullptr;
}
const CurveComponent &curve_component = static_cast<const CurveComponent &>(component);
const CurveEval *curve = curve_component.get_for_read();
if (curve == nullptr) {
return nullptr;
}
if (domain == ATTR_DOMAIN_POINT) {
Array<bool> selection(mask.min_array_size());
select_by_handle_type(*curve, type_, mode_, selection);
return &scope.construct<fn::GVArray_For_ArrayContainer<Array<bool>>>(std::move(selection));
}
}
return nullptr;
};
uint64_t hash() const override
{
return get_default_hash_2((int)mode_, (int)type_);
}
bool is_equal_to(const fn::FieldNode &other) const override
{
return dynamic_cast<const HandleTypeFieldInput *>(&other) != nullptr;
if (const HandleTypeFieldInput *other_handle_selection =
dynamic_cast<const HandleTypeFieldInput *>(&other)) {
return mode_ == other_handle_selection->mode_ && type_ == other_handle_selection->type_;
}
return false;
}
};
static void geo_node_curve_handle_type_selection_exec(GeoNodeExecParams params)
{
const NodeGeometryCurveSelectHandles *storage =
(const NodeGeometryCurveSelectHandles *)params.node().storage;
const BezierSpline::HandleType handle_type = handle_type_from_input_type(
(GeometryNodeCurveHandleType)storage->handle_type);
const GeometryNodeCurveHandleMode mode = (GeometryNodeCurveHandleMode)storage->mode;
Field<bool> selection_field{std::make_shared<HandleTypeFieldInput>(handle_type, mode)};
params.set_output("Selection", std::move(selection_field));
}
} // namespace blender::nodes
void register_node_type_geo_curve_handle_type_selection()
{
static bNodeType ntype;
geo_node_type_base(&ntype,
GEO_NODE_CURVE_HANDLE_TYPE_SELECTION,
"Handle Type Selection",
NODE_CLASS_GEOMETRY,
0);
ntype.declare = blender::nodes::geo_node_curve_handle_type_selection_declare;
ntype.geometry_node_execute = blender::nodes::geo_node_curve_handle_type_selection_exec;
node_type_init(&ntype, blender::nodes::geo_node_curve_handle_type_selection_init);
node_type_storage(&ntype,
"NodeGeometryCurveSelectHandles",
node_free_standard_storage,
node_copy_standard_storage);
ntype.draw_buttons = blender::nodes::geo_node_curve_handle_type_selection_layout;
nodeRegisterType(&ntype);
}
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