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source/blender/nodes/geometry/nodes/node_geo_attribute_compare.cc

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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_compare_in[] = {
{SOCK_GEOMETRY, N_("Geometry")},
{SOCK_STRING, N_("A")},
{SOCK_FLOAT, N_("A"), 0.0, 0.0, 0.0, 0.0, -FLT_MAX, FLT_MAX},
{SOCK_VECTOR, N_("A"), 0.0, 0.0, 0.0, 0.0, -FLT_MAX, FLT_MAX},
{SOCK_RGBA, N_("A"), 0.5, 0.5, 0.5, 1.0},
{SOCK_STRING, N_("B")},
{SOCK_FLOAT, N_("B"), 0.0, 0.0, 0.0, 0.0, -FLT_MAX, FLT_MAX},
{SOCK_VECTOR, N_("B"), 0.0, 0.0, 0.0, 0.0, -FLT_MAX, FLT_MAX},
{SOCK_RGBA, N_("B"), 0.5, 0.5, 0.5, 1.0},
{SOCK_FLOAT, N_("Threshold"), 0.01f, 0.0f, 0.0f, 0.0f, 0.0f, FLT_MAX},
{SOCK_STRING, N_("Result")},
{-1, ""},
};
static bNodeSocketTemplate geo_node_attribute_compare_out[] = {
{SOCK_GEOMETRY, N_("Geometry")},
{-1, ""},
};
static void geo_node_attribute_compare_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeAttributeCompare *data = (NodeAttributeCompare *)MEM_callocN(sizeof(NodeAttributeCompare),
"attribute mix node");
data->operation = NODE_FLOAT_COMPARE_GREATER_THAN;
data->input_type_a = GEO_NODE_ATTRIBUTE_INPUT_ATTRIBUTE;
data->input_type_b = GEO_NODE_ATTRIBUTE_INPUT_ATTRIBUTE;
node->storage = data;
}
static bool operation_is_equality(const NodeAttributeCompare &node_storage)
{
JacquesLuckeUnsubmitted
Done
Inline Actions

operation_tests_equality maybe?

JacquesLucke: `operation_tests_equality` maybe?
return ELEM(node_storage.operation, NODE_FLOAT_COMPARE_EQUAL, NODE_FLOAT_COMPARE_NOT_EQUAL);
}
namespace blender::nodes {
static void geo_node_attribute_compare_update(bNodeTree *UNUSED(ntree), bNode *node)
{
NodeAttributeCompare *node_storage = (NodeAttributeCompare *)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);
bNodeSocket *socket_threshold = (bNodeSocket *)BLI_findlink(&node->inputs, 9);
nodeSetSocketAvailability(socket_threshold, operation_is_equality(*node_storage));
}
static void do_math_operation(const FloatReadAttribute &input_a,
const FloatReadAttribute &input_b,
const FloatCompareOperation operation,
MutableSpan<bool> span_result)
{
const int size = input_a.size();
Span<float> span_a = input_a.get_span();
Span<float> span_b = input_b.get_span();
if (try_dispatch_float_math_fl_fl_to_bool(
operation, [&](auto math_function, const FloatMathOperationInfo &UNUSED(info)) {
for (const int i : IndexRange(size)) {
const float a = span_a[i];
const float b = span_b[i];
const bool out = math_function(a, b);
span_result[i] = out;
}
})) {
return;
}
/* The operation is not supported by this node currently. */
BLI_assert(false);
}
static void do_equal_operation(const FloatReadAttribute &input_a,
const FloatReadAttribute &input_b,
const float threshold,
MutableSpan<bool> span_result)
{
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const float a = input_a[i];
const float b = input_b[i];
span_result[i] = compare_ff(a, b, threshold);
}
}
static void do_equal_operation(const Float3ReadAttribute &input_a,
const Float3ReadAttribute &input_b,
const float threshold,
MutableSpan<bool> span_result)
{
const float threshold_squared = pow2f(threshold);
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const float3 a = input_a[i];
const float3 b = input_b[i];
span_result[i] = len_squared_v3v3(a, b) < threshold_squared;
}
}
static void do_equal_operation(const Color4fReadAttribute &input_a,
const Color4fReadAttribute &input_b,
const float threshold,
MutableSpan<bool> span_result)
{
const float threshold_squared = pow2f(threshold);
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const Color4f a = input_a[i];
const Color4f b = input_b[i];
span_result[i] = len_squared_v4v4(a, b) < threshold_squared;
}
}
static void do_equal_operation(const BooleanReadAttribute &input_a,
const BooleanReadAttribute &input_b,
const float UNUSED(threshold),
MutableSpan<bool> span_result)
{
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const bool a = input_a[i];
const bool b = input_b[i];
span_result[i] = a == b;
}
}
static void do_not_equal_operation(const FloatReadAttribute &input_a,
const FloatReadAttribute &input_b,
const float threshold,
MutableSpan<bool> span_result)
{
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const float a = input_a[i];
const float b = input_b[i];
span_result[i] = !compare_ff(a, b, threshold);
}
}
static void do_not_equal_operation(const Float3ReadAttribute &input_a,
const Float3ReadAttribute &input_b,
const float threshold,
MutableSpan<bool> span_result)
{
const float threshold_squared = pow2f(threshold);
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const float3 a = input_a[i];
const float3 b = input_b[i];
span_result[i] = len_squared_v3v3(a, b) >= threshold_squared;
}
}
static void do_not_equal_operation(const Color4fReadAttribute &input_a,
const Color4fReadAttribute &input_b,
const float threshold,
MutableSpan<bool> span_result)
{
const float threshold_squared = pow2f(threshold);
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const Color4f a = input_a[i];
const Color4f b = input_b[i];
span_result[i] = len_squared_v4v4(a, b) >= threshold_squared;
}
}
static void do_not_equal_operation(const BooleanReadAttribute &input_a,
const BooleanReadAttribute &input_b,
const float UNUSED(threshold),
MutableSpan<bool> span_result)
{
const int size = input_a.size();
for (const int i : IndexRange(size)) {
const bool a = input_a[i];
const bool b = input_b[i];
span_result[i] = a != b;
}
}
static CustomDataType get_data_type(GeometryComponent &component,
const GeoNodeExecParams &params,
const NodeAttributeCompare &node_storage)
{
if (operation_is_equality(node_storage)) {
CustomDataType data_type_a = params.get_input_attribute_data_type(
"A", component, CD_PROP_FLOAT);
CustomDataType data_type_b = params.get_input_attribute_data_type(
"B", component, CD_PROP_FLOAT);
/* Convert the input attributes to the same data type for the equality tests. Use the higher
* complexity attribute type, otherwise information necessary to the comparison may be lost. */
return attribute_domain_highest_complexity({data_type_a, data_type_b});
}
/* Use float compare for every operation besides equality. */
return CD_PROP_FLOAT;
}
static void attribute_compare_calc(GeometryComponent &component, const GeoNodeExecParams &params)
{
const bNode &node = params.node();
NodeAttributeCompare *node_storage = (NodeAttributeCompare *)node.storage;
const FloatCompareOperation operation = static_cast<FloatCompareOperation>(
node_storage->operation);
/* The result type of this node is always float. */
const CustomDataType result_type = CD_PROP_BOOL;
/* 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;
}
const CustomDataType input_data_type = get_data_type(component, params, *node_storage);
ReadAttributePtr attribute_a = params.get_input_attribute(
"A", component, result_domain, input_data_type, nullptr);
ReadAttributePtr attribute_b = params.get_input_attribute(
"B", component, result_domain, input_data_type, nullptr);
if (!attribute_a || !attribute_b) {
/* Attribute wasn't found. */
return;
}
BooleanWriteAttribute attribute_result_bool = std::move(attribute_result);
MutableSpan<bool> result_span = attribute_result_bool.get_span();
/* Use specific types for correct equality operations, but for other operations we use implicit
* conversions and float comparison. In other words, the comparison is not element-wise. */
if (operation_is_equality(*node_storage)) {
const float threshold = params.get_input<float>("Threshold");
if (operation == NODE_FLOAT_COMPARE_EQUAL) {
if (input_data_type == CD_PROP_FLOAT) {
FloatReadAttribute attribute_a_float = std::move(attribute_a);
FloatReadAttribute attribute_b_float = std::move(attribute_b);
do_equal_operation(
std::move(attribute_a_float), std::move(attribute_b_float), threshold, result_span);
}
else if (input_data_type == CD_PROP_FLOAT3) {
Float3ReadAttribute attribute_a_float3 = std::move(attribute_a);
Float3ReadAttribute attribute_b_float3 = std::move(attribute_b);
do_equal_operation(
std::move(attribute_a_float3), std::move(attribute_b_float3), threshold, result_span);
}
else if (input_data_type == CD_PROP_COLOR) {
Color4fReadAttribute attribute_a_color = std::move(attribute_a);
Color4fReadAttribute attribute_b_color = std::move(attribute_b);
do_equal_operation(
std::move(attribute_a_color), std::move(attribute_b_color), threshold, result_span);
}
else if (input_data_type == CD_PROP_BOOL) {
BooleanReadAttribute attribute_a_bool = std::move(attribute_a);
BooleanReadAttribute attribute_b_bool = std::move(attribute_b);
do_equal_operation(
std::move(attribute_a_bool), std::move(attribute_b_bool), threshold, result_span);
}
}
else if (operation == NODE_FLOAT_COMPARE_NOT_EQUAL) {
if (input_data_type == CD_PROP_FLOAT) {
FloatReadAttribute attribute_a_float = std::move(attribute_a);
FloatReadAttribute attribute_b_float = std::move(attribute_b);
do_not_equal_operation(
std::move(attribute_a_float), std::move(attribute_b_float), threshold, result_span);
}
else if (input_data_type == CD_PROP_FLOAT3) {
Float3ReadAttribute attribute_a_float3 = std::move(attribute_a);
Float3ReadAttribute attribute_b_float3 = std::move(attribute_b);
do_not_equal_operation(
std::move(attribute_a_float3), std::move(attribute_b_float3), threshold, result_span);
}
else if (input_data_type == CD_PROP_COLOR) {
Color4fReadAttribute attribute_a_color = std::move(attribute_a);
Color4fReadAttribute attribute_b_color = std::move(attribute_b);
do_not_equal_operation(
std::move(attribute_a_color), std::move(attribute_b_color), threshold, result_span);
}
else if (input_data_type == CD_PROP_BOOL) {
BooleanReadAttribute attribute_a_bool = std::move(attribute_a);
BooleanReadAttribute attribute_b_bool = std::move(attribute_b);
do_not_equal_operation(
std::move(attribute_a_bool), std::move(attribute_b_bool), threshold, result_span);
}
}
}
else {
do_math_operation(std::move(attribute_a), std::move(attribute_b), operation, result_span);
}
attribute_result_bool.apply_span();
}
static void geo_node_attribute_compare_exec(GeoNodeExecParams params)
{
GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry");
if (geometry_set.has<MeshComponent>()) {
attribute_compare_calc(geometry_set.get_component_for_write<MeshComponent>(), params);
}
if (geometry_set.has<PointCloudComponent>()) {
attribute_compare_calc(geometry_set.get_component_for_write<PointCloudComponent>(), params);
}
params.set_output("Geometry", geometry_set);
}
} // namespace blender::nodes
void register_node_type_geo_attribute_compare()
{
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_ATTRIBUTE_COMPARE, "Attribute Compare", NODE_CLASS_ATTRIBUTE, 0);
node_type_socket_templates(
&ntype, geo_node_attribute_compare_in, geo_node_attribute_compare_out);
ntype.geometry_node_execute = blender::nodes::geo_node_attribute_compare_exec;
node_type_update(&ntype, blender::nodes::geo_node_attribute_compare_update);
node_type_storage(
&ntype, "NodeAttributeCompare", node_free_standard_storage, node_copy_standard_storage);
node_type_init(&ntype, geo_node_attribute_compare_init);
nodeRegisterType(&ntype);
}