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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 "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BKE_mesh.h"
#include "UI_interface.h"
#include "UI_resources.h"
#include "node_geometry_util.hh"
static bNodeSocketTemplate geo_node_mesh_primitive_line_in[] = {
{SOCK_INT, N_("Count"), 10, 0.0f, 0.0f, 0.0f, 1, 10000},
{SOCK_FLOAT, N_("Resolution"), 1.0f, 0.0f, 0.0f, 0.0f, 0.01f, FLT_MAX, PROP_DISTANCE},
{SOCK_VECTOR,
N_("Start Location"),
0.0f,
0.0f,
0.0f,
1.0f,
-FLT_MAX,
FLT_MAX,
PROP_TRANSLATION},
{SOCK_VECTOR, N_("Offset"), 0.0f, 0.0f, 1.0f, 0.0f, -FLT_MAX, FLT_MAX, PROP_TRANSLATION},
{-1, ""},
};
static bNodeSocketTemplate geo_node_mesh_primitive_line_out[] = {
{SOCK_GEOMETRY, N_("Geometry")},
{-1, ""},
};
static void geo_node_mesh_primitive_line_layout(uiLayout *layout,
bContext *UNUSED(C),
PointerRNA *ptr)
{
uiLayoutSetPropSep(layout, true);
uiLayoutSetPropDecorate(layout, false);
uiItemR(layout, ptr, "mode", 0, "", ICON_NONE);
if (RNA_enum_get(ptr, "mode") == GEO_NODE_MESH_LINE_MODE_END_POINTS) {
uiItemR(layout, ptr, "count_mode", 0, "", ICON_NONE);
}
}
static void geo_node_mesh_primitive_line_init(bNodeTree *UNUSED(ntree), bNode *node)
{
NodeGeometryMeshLine *node_storage = (NodeGeometryMeshLine *)MEM_callocN(
sizeof(NodeGeometryMeshLine), __func__);
node_storage->mode = GEO_NODE_MESH_LINE_MODE_OFFSET;
node_storage->count_mode = GEO_NODE_MESH_LINE_COUNT_TOTAL;
node->storage = node_storage;
}
static void geo_node_mesh_primitive_line_update(bNodeTree *UNUSED(tree), bNode *node)
{
bNodeSocket *count_socket = (bNodeSocket *)node->inputs.first;
bNodeSocket *resolution_socket = count_socket->next;
bNodeSocket *start_socket = resolution_socket->next;
bNodeSocket *end_and_offset_socket = start_socket->next;
const NodeGeometryMeshLine &storage = *(const NodeGeometryMeshLine *)node->storage;
const GeometryNodeMeshLineMode mode = (const GeometryNodeMeshLineMode)storage.mode;
const GeometryNodeMeshLineCountMode count_mode = (const GeometryNodeMeshLineCountMode)
storage.count_mode;
node_sock_label(end_and_offset_socket,
(mode == GEO_NODE_MESH_LINE_MODE_END_POINTS) ? N_("End Location") :
N_("Offset"));
nodeSetSocketAvailability(resolution_socket,
mode == GEO_NODE_MESH_LINE_MODE_END_POINTS &&
count_mode == GEO_NODE_MESH_LINE_COUNT_RESOLUTION);
nodeSetSocketAvailability(count_socket,
mode == GEO_NODE_MESH_LINE_MODE_OFFSET ||
count_mode == GEO_NODE_MESH_LINE_COUNT_TOTAL);
}
namespace blender::nodes {
static void fill_edge_data(MutableSpan<MEdge> edges)
{
for (const int i : edges.index_range()) {
edges[i].v1 = i;
edges[i].v2 = i + 1;
edges[i].flag |= ME_LOOSEEDGE;
}
}
static Mesh *create_line_mesh(const float3 start, const float3 delta, const int count)
{
if (count < 1) {
return nullptr;
}
Mesh *mesh = BKE_mesh_new_nomain(count, count - 1, 0, 0, 0);
MutableSpan<MVert> verts{mesh->mvert, mesh->totvert};
MutableSpan<MEdge> edges{mesh->medge, mesh->totedge};
short normal[3];
normal_float_to_short_v3(normal, delta.normalized());
float3 co = start;
for (const int i : verts.index_range()) {
copy_v3_v3(verts[i].co, co);
copy_v3_v3_short(verts[i].no, normal);
co += delta;
}
fill_edge_data(edges);
return mesh;
}
static void geo_node_mesh_primitive_line_exec(GeoNodeExecParams params)
{
const NodeGeometryMeshLine &storage = *(const NodeGeometryMeshLine *)params.node().storage;
const GeometryNodeMeshLineMode mode = (const GeometryNodeMeshLineMode)storage.mode;
const GeometryNodeMeshLineCountMode count_mode = (const GeometryNodeMeshLineCountMode)
storage.count_mode;
Mesh *mesh = nullptr;
const float3 start = params.extract_input<float3>("Start Location");
if (mode == GEO_NODE_MESH_LINE_MODE_END_POINTS) {
/* The label switches to "End Location", but the same socket is used. */
const float3 end = params.extract_input<float3>("Offset");
const float3 total_delta = end - start;
if (count_mode == GEO_NODE_MESH_LINE_COUNT_RESOLUTION) {
/* Don't allow asymptotic count increase for low resolution values. */
const float resolution = std::max(params.extract_input<float>("Resolution"), 0.0001f);
const int count = total_delta.length() / resolution + 1;
const float3 delta = total_delta.normalized() * resolution;
mesh = create_line_mesh(start, delta, count);
}
else if (count_mode == GEO_NODE_MESH_LINE_COUNT_TOTAL) {
const int count = params.extract_input<int>("Count");
if (count == 1) {
mesh = create_line_mesh(start, float3(0), count);
}
else {
const float3 delta = total_delta / (float)(count - 1);
mesh = create_line_mesh(start, delta, count);
}
}
}
else if (mode == GEO_NODE_MESH_LINE_MODE_OFFSET) {
const float3 delta = params.extract_input<float3>("Offset");
const int count = params.extract_input<int>("Count");
mesh = create_line_mesh(start, delta, count);
}
params.set_output("Geometry", GeometrySet::create_with_mesh(mesh));
}
} // namespace blender::nodes
void register_node_type_geo_mesh_primitive_line()
{
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_MESH_PRIMITIVE_LINE, "Line", NODE_CLASS_GEOMETRY, 0);
node_type_socket_templates(
&ntype, geo_node_mesh_primitive_line_in, geo_node_mesh_primitive_line_out);
node_type_init(&ntype, geo_node_mesh_primitive_line_init);
node_type_update(&ntype, geo_node_mesh_primitive_line_update);
node_type_storage(
&ntype, "NodeGeometryMeshLine", node_free_standard_storage, node_copy_standard_storage);
ntype.geometry_node_execute = blender::nodes::geo_node_mesh_primitive_line_exec;
ntype.draw_buttons = geo_node_mesh_primitive_line_layout;
nodeRegisterType(&ntype);
}
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