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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 "node_geometry_util.hh"
#include "BKE_attribute.h"
#include "BKE_attribute_access.hh"
#include "BLI_array.hh"
#include "BLI_math_base_safe.h"
#include "BLI_rand.hh"
#include "DNA_mesh_types.h"
#include "DNA_pointcloud_types.h"
#include "NOD_math_functions.hh"
static bNodeSocketTemplate geo_node_attribute_math_in[] = {
{SOCK_GEOMETRY, N_("Geometry")},
{SOCK_STRING, N_("A")},
{SOCK_FLOAT, N_("A"), 0.0f, 0.0f, 0.0f, 0.0f, -FLT_MAX, FLT_MAX},
{SOCK_STRING, N_("B")},
{SOCK_FLOAT, N_("B"), 0.0f, 0.0f, 0.0f, 0.0f, -FLT_MAX, FLT_MAX},
{SOCK_STRING, N_("Result")},
{-1, ""},
};
static bNodeSocketTemplate geo_node_attribute_math_out[] = {
{SOCK_GEOMETRY, N_("Geometry")},
{-1, ""},
};
static void geo_node_attribute_math_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeAttributeMath *data = (NodeAttributeMath *)MEM_callocN(sizeof(NodeAttributeMath),
"NodeAttributeMath");
data->operation = NODE_MATH_ADD;
data->input_type_a = GEO_NODE_ATTRIBUTE_INPUT_ATTRIBUTE;
data->input_type_b = GEO_NODE_ATTRIBUTE_INPUT_ATTRIBUTE;
node->storage = data;
}
namespace blender::nodes {
static void geo_node_attribute_math_update(bNodeTree *UNUSED(ntree), bNode *node)
{
NodeAttributeMath *node_storage = (NodeAttributeMath *)node->storage;
update_attribute_input_socket_availabilities(
*node, "A", (GeometryNodeAttributeInputMode)node_storage->input_type_a);
update_attribute_input_socket_availabilities(
*node, "B", (GeometryNodeAttributeInputMode)node_storage->input_type_b);
}
static void do_math_operation(const FloatReadAttribute &input_a,
const FloatReadAttribute &input_b,
FloatWriteAttribute result,
const int operation)
{
const int size = input_a.size();
Span<float> span_a = input_a.get_span();
Span<float> span_b = input_b.get_span();
MutableSpan<float> span_result = result.get_span_for_write_only();
bool success = try_dispatch_float_math_fl_fl_to_fl(
operation, [&](auto math_function, const FloatMathOperationInfo &UNUSED(info)) {
for (const int i : IndexRange(size)) {
const float in1 = span_a[i];
const float in2 = span_b[i];
const float out = math_function(in1, in2);
span_result[i] = out;
}
});
result.apply_span();
/* The operation is not supported by this node currently. */
BLI_assert(success);
UNUSED_VARS_NDEBUG(success);
}
static void attribute_math_calc(GeometryComponent &component, const GeoNodeExecParams ¶ms)
{
const bNode &node = params.node();
const NodeAttributeMath *node_storage = (const NodeAttributeMath *)node.storage;
const int operation = node_storage->operation;
/* The result type of this node is always float. */
const CustomDataType result_type = CD_PROP_FLOAT;
/* The result domain is always point for now. */
const AttributeDomain result_domain = ATTR_DOMAIN_POINT;
/* Get result attribute first, in case it has to overwrite one of the existing attributes. */
const std::string result_name = params.get_input<std::string>("Result");
WriteAttributePtr attribute_result = component.attribute_try_ensure_for_write(
result_name, result_domain, result_type);
if (!attribute_result) {
return;
}
ReadAttributePtr attribute_a = params.get_input_attribute(
"A", component, result_domain, result_type, nullptr);
ReadAttributePtr attribute_b = params.get_input_attribute(
"B", component, result_domain, result_type, nullptr);
if (!attribute_a || !attribute_b) {
/* Attribute wasn't found. */
return;
}
do_math_operation(
std::move(attribute_a), std::move(attribute_b), std::move(attribute_result), operation);
}
static void geo_node_attribute_math_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
if (geometry_set.has<MeshComponent>()) {
attribute_math_calc(geometry_set.get_component_for_write<MeshComponent>(), params);
}
if (geometry_set.has<PointCloudComponent>()) {
attribute_math_calc(geometry_set.get_component_for_write<PointCloudComponent>(), params);
}
params.set_output("Geometry", geometry_set);
}
} // namespace blender::nodes
void register_node_type_geo_attribute_math()
{
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_ATTRIBUTE_MATH, "Attribute Math", NODE_CLASS_ATTRIBUTE, 0);
node_type_socket_templates(&ntype, geo_node_attribute_math_in, geo_node_attribute_math_out);
ntype.geometry_node_execute = blender::nodes::geo_node_attribute_math_exec;
node_type_update(&ntype, blender::nodes::geo_node_attribute_math_update);
node_type_init(&ntype, geo_node_attribute_math_init);
node_type_storage(
&ntype, "NodeAttributeCompare", node_free_standard_storage, node_copy_standard_storage);
nodeRegisterType(&ntype);
}
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