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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_curve_primitive_line_cc {
NODE_STORAGE_FUNCS(NodeGeometryCurvePrimitiveLine)
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Vector>(N_("Start"))
.subtype(PROP_TRANSLATION)
.description(N_("Position of the first control point"));
b.add_input<decl::Vector>(N_("End"))
.default_value({0.0f, 0.0f, 1.0f})
.subtype(PROP_TRANSLATION)
.description(N_("Position of the second control point"));
b.add_input<decl::Vector>(N_("Direction"))
.default_value({0.0f, 0.0f, 1.0f})
.description(
N_("Direction the line is going in. The length of this vector does not matter"));
b.add_input<decl::Float>(N_("Length"))
.default_value(1.0f)
.subtype(PROP_DISTANCE)
.description(N_("Distance between the two points"));
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)
{
NodeGeometryCurvePrimitiveLine *data = MEM_cnew<NodeGeometryCurvePrimitiveLine>(__func__);
data->mode = GEO_NODE_CURVE_PRIMITIVE_LINE_MODE_POINTS;
node->storage = data;
}
static void node_update(bNodeTree *ntree, bNode *node)
{
const NodeGeometryCurvePrimitiveLine &storage = node_storage(*node);
const GeometryNodeCurvePrimitiveLineMode mode = (GeometryNodeCurvePrimitiveLineMode)storage.mode;
bNodeSocket *p2_socket = ((bNodeSocket *)node->inputs.first)->next;
bNodeSocket *direction_socket = p2_socket->next;
bNodeSocket *length_socket = direction_socket->next;
nodeSetSocketAvailability(ntree, p2_socket, mode == GEO_NODE_CURVE_PRIMITIVE_LINE_MODE_POINTS);
nodeSetSocketAvailability(
ntree, direction_socket, mode == GEO_NODE_CURVE_PRIMITIVE_LINE_MODE_DIRECTION);
nodeSetSocketAvailability(
ntree, length_socket, mode == GEO_NODE_CURVE_PRIMITIVE_LINE_MODE_DIRECTION);
}
static std::unique_ptr<CurveEval> create_point_line_curve(const float3 start, const float3 end)
{
std::unique_ptr<CurveEval> curve = std::make_unique<CurveEval>();
std::unique_ptr<PolySpline> spline = std::make_unique<PolySpline>();
spline->resize(2);
MutableSpan<float3> positions = spline->positions();
positions[0] = start;
positions[1] = end;
spline->radii().fill(1.0f);
spline->tilts().fill(0.0f);
curve->add_spline(std::move(spline));
curve->attributes.reallocate(curve->splines().size());
return curve;
}
static std::unique_ptr<CurveEval> create_direction_line_curve(const float3 start,
const float3 direction,
const float length)
{
std::unique_ptr<CurveEval> curve = std::make_unique<CurveEval>();
std::unique_ptr<PolySpline> spline = std::make_unique<PolySpline>();
spline->resize(2);
MutableSpan<float3> positions = spline->positions();
positions[0] = start;
positions[1] = math::normalize(direction) * length + start;
spline->radii().fill(1.0f);
spline->tilts().fill(0.0f);
curve->add_spline(std::move(spline));
curve->attributes.reallocate(curve->splines().size());
return curve;
}
static void node_geo_exec(GeoNodeExecParams params)
{
const NodeGeometryCurvePrimitiveLine &storage = node_storage(params.node());
const GeometryNodeCurvePrimitiveLineMode mode = (GeometryNodeCurvePrimitiveLineMode)storage.mode;
std::unique_ptr<CurveEval> curve;
if (mode == GEO_NODE_CURVE_PRIMITIVE_LINE_MODE_POINTS) {
curve = create_point_line_curve(params.extract_input<float3>("Start"),
params.extract_input<float3>("End"));
}
else if (mode == GEO_NODE_CURVE_PRIMITIVE_LINE_MODE_DIRECTION) {
curve = create_direction_line_curve(params.extract_input<float3>("Start"),
params.extract_input<float3>("Direction"),
params.extract_input<float>("Length"));
}
params.set_output("Curve", GeometrySet::create_with_curve(curve.release()));
}
} // namespace blender::nodes::node_geo_curve_primitive_line_cc
void register_node_type_geo_curve_primitive_line()
{
namespace file_ns = blender::nodes::node_geo_curve_primitive_line_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_CURVE_PRIMITIVE_LINE, "Curve Line", NODE_CLASS_GEOMETRY);
node_type_init(&ntype, file_ns::node_init);
node_type_update(&ntype, file_ns::node_update);
node_type_storage(&ntype,
"NodeGeometryCurvePrimitiveLine",
node_free_standard_storage,
node_copy_standard_storage);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
ntype.draw_buttons = file_ns::node_layout;
nodeRegisterType(&ntype);
}
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