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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_function_util.hh"
#include "BLI_hash.h"
static bNodeSocketTemplate fn_node_random_float_in[] = {
{SOCK_FLOAT, N_("Min"), 0.0f, 0.0f, 0.0f, 0.0f, -10000.0f, 10000.0f, PROP_NONE},
{SOCK_FLOAT, N_("Max"), 1.0f, 0.0f, 0.0f, 0.0f, -10000.0f, 10000.0f, PROP_NONE},
{SOCK_INT, N_("Seed"), 0, 0, 0, 0, -10000, 10000},
{-1, ""},
};
static bNodeSocketTemplate fn_node_random_float_out[] = {
{SOCK_FLOAT, N_("Value")},
{-1, ""},
};
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_random_float_expand_in_mf_network(
blender::nodes::NodeMFNetworkBuilder &builder)
{
builder.construct_and_set_matching_fn<RandomFloatFunction>();
}
void register_node_type_fn_random_float()
{
static bNodeType ntype;
fn_node_type_base(&ntype, FN_NODE_RANDOM_FLOAT, "Random Float", 0, 0);
node_type_socket_templates(&ntype, fn_node_random_float_in, fn_node_random_float_out);
ntype.expand_in_mf_network = fn_node_random_float_expand_in_mf_network;
nodeRegisterType(&ntype);
}
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