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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "node_function_util.hh"
#include "BLI_hash.h"
namespace blender::nodes::node_fn_random_float_cc {
static void fn_node_legacy_random_float_declare(NodeDeclarationBuilder &b)
{
b.is_function_node();
b.add_input<decl::Float>(N_("Min")).min(-10000.0f).max(10000.0f);
b.add_input<decl::Float>(N_("Max")).default_value(1.0f).min(-10000.0f).max(10000.0f);
b.add_input<decl::Int>(N_("Seed")).min(-10000).max(10000);
b.add_output<decl::Float>(N_("Value"));
}
class RandomFloatFunction : public blender::fn::MultiFunction {
public:
RandomFloatFunction()
{
static blender::fn::MFSignature signature = create_signature();
this->set_signature(&signature);
}
static blender::fn::MFSignature create_signature()
{
blender::fn::MFSignatureBuilder signature{"Random float"};
signature.single_input<float>("Min");
signature.single_input<float>("Max");
signature.single_input<int>("Seed");
signature.single_output<float>("Value");
return signature.build();
}
void call(blender::IndexMask mask,
blender::fn::MFParams params,
blender::fn::MFContext UNUSED(context)) const override
{
const blender::VArray<float> &min_values = params.readonly_single_input<float>(0, "Min");
const blender::VArray<float> &max_values = params.readonly_single_input<float>(1, "Max");
const blender::VArray<int> &seeds = params.readonly_single_input<int>(2, "Seed");
blender::MutableSpan<float> values = params.uninitialized_single_output<float>(3, "Value");
for (int64_t i : mask) {
const float min_value = min_values[i];
const float max_value = max_values[i];
const int seed = seeds[i];
const float value = BLI_hash_int_01(static_cast<uint32_t>(seed));
values[i] = value * (max_value - min_value) + min_value;
}
}
};
static void fn_node_legacy_random_float_build_multi_function(
blender::nodes::NodeMultiFunctionBuilder &builder)
{
static RandomFloatFunction fn;
builder.set_matching_fn(fn);
}
} // namespace blender::nodes::node_fn_random_float_cc
void register_node_type_fn_legacy_random_float()
{
namespace file_ns = blender::nodes::node_fn_random_float_cc;
static bNodeType ntype;
fn_node_type_base(&ntype, FN_NODE_LEGACY_RANDOM_FLOAT, "Random Float", 0);
ntype.declare = file_ns::fn_node_legacy_random_float_declare;
ntype.build_multi_function = file_ns::fn_node_legacy_random_float_build_multi_function;
nodeRegisterType(&ntype);
}
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