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source/blender/nodes/function/nodes/node_fn_random.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.
*/
/*
* 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 "BLI_hash.h"
#include "node_function_util.hh"
#include "UI_interface.h"
#include "UI_resources.h"
namespace blender::nodes {
static void fn_node_random_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Vector>("Min");
b.add_input<decl::Vector>("Max").default_value({1.0f, 1.0f, 1.0f});
b.add_input<decl::Float>("Min", "Min_001");
b.add_input<decl::Float>("Max", "Max_001").default_value(1.0f);
b.add_input<decl::Int>("Min", "Min_002").min(-100000).max(100000);
b.add_input<decl::Int>("Max", "Max_002").default_value(100).min(-100000).max(100000);
b.add_input<decl::Int>("Seed").default_value(0).min(-10000).max(10000);
b.add_output<decl::Vector>("Value");
b.add_output<decl::Float>("Value", "Value_001");
b.add_output<decl::Int>("Value", "Value_002");
b.add_output<decl::Bool>("Value", "Value_003");
}
static void fn_node_random_layout(uiLayout *layout, bContext *UNUSED(C), PointerRNA *ptr)
{
uiItemR(layout, ptr, "data_type", 0, "", ICON_NONE);
}
static void fn_node_random_init(bNodeTree *UNUSED(tree), bNode *node)
{
NodeRandom *data = (NodeRandom *)MEM_callocN(sizeof(NodeRandom), __func__);
data->data_type = CD_PROP_FLOAT;
node->storage = data;
}
static void fn_node_random_update(bNodeTree *UNUSED(ntree), bNode *node)
{
const NodeRandom &storage = *(const NodeRandom *)node->storage;
const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type);
bNodeSocket *sock_min_vector = (bNodeSocket *)node->inputs.first;
bNodeSocket *sock_max_vector = sock_min_vector->next;
bNodeSocket *sock_min_float = sock_max_vector->next;
bNodeSocket *sock_max_float = sock_min_float->next;
bNodeSocket *sock_min_int = sock_max_float->next;
bNodeSocket *sock_max_int = sock_min_int->next;
bNodeSocket *sock_out_vector = (bNodeSocket *)node->outputs.first;
bNodeSocket *sock_out_float = sock_out_vector->next;
bNodeSocket *sock_out_int = sock_out_float->next;
bNodeSocket *sock_out_bool = sock_out_int->next;
nodeSetSocketAvailability(sock_min_vector, data_type == CD_PROP_FLOAT3);
nodeSetSocketAvailability(sock_max_vector, data_type == CD_PROP_FLOAT3);
nodeSetSocketAvailability(sock_min_float, data_type == CD_PROP_FLOAT);
nodeSetSocketAvailability(sock_max_float, data_type == CD_PROP_FLOAT);
nodeSetSocketAvailability(sock_min_int, data_type == CD_PROP_INT32);
nodeSetSocketAvailability(sock_max_int, data_type == CD_PROP_INT32);
nodeSetSocketAvailability(sock_out_vector, data_type == CD_PROP_FLOAT3);
nodeSetSocketAvailability(sock_out_float, data_type == CD_PROP_FLOAT);
nodeSetSocketAvailability(sock_out_int, data_type == CD_PROP_INT32);
nodeSetSocketAvailability(sock_out_bool, data_type == CD_PROP_BOOL);
}
class RandomVectorFunction : public blender::fn::MultiFunction {
public:
RandomVectorFunction()
{
static blender::fn::MFSignature signature = create_signature();
this->set_signature(&signature);
}
static blender::fn::MFSignature create_signature()
{
blender::fn::MFSignatureBuilder signature{"Random"};
signature.single_input<float3>("Min");
signature.single_input<float3>("Max");
signature.single_input<int>("Seed");
signature.single_output<float3>("Value");
return signature.build();
}
void call(blender::IndexMask mask,
blender::fn::MFParams params,
blender::fn::MFContext UNUSED(context)) const override
{
const blender::VArray<float3> &min_values = params.readonly_single_input<float3>(0, "Min");
const blender::VArray<float3> &max_values = params.readonly_single_input<float3>(1, "Max");
const blender::VArray<int> &seeds = params.readonly_single_input<int>(2, "Seed");
blender::MutableSpan<float3> values = params.uninitialized_single_output<float3>(3, "Value");
for (int64_t i : mask) {
const float3 min_value = min_values[i];
const float3 max_value = max_values[i];
const int seed = seeds[i];
const float x = BLI_hash_int_3d_to_float(seed, i, 435109);
const float y = BLI_hash_int_3d_to_float(seed, i, 380867);
const float z = BLI_hash_int_3d_to_float(seed, i, 1059217);
values[i] = float3(x, y, z) * (max_value - min_value) + min_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"};
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;
}
}
};
class RandomIntFunction : public blender::fn::MultiFunction {
public:
RandomIntFunction()
{
static blender::fn::MFSignature signature = create_signature();
this->set_signature(&signature);
}
static blender::fn::MFSignature create_signature()
{
blender::fn::MFSignatureBuilder signature{"Random"};
signature.single_input<int>("Min");
signature.single_input<int>("Max");
signature.single_input<int>("Seed");
signature.single_output<int>("Value");
return signature.build();
}
void call(blender::IndexMask mask,
blender::fn::MFParams params,
blender::fn::MFContext UNUSED(context)) const override
{
const blender::VArray<int> &min_values = params.readonly_single_input<int>(0, "Min");
const blender::VArray<int> &max_values = params.readonly_single_input<int>(1, "Max");
const blender::VArray<int> &seeds = params.readonly_single_input<int>(2, "Seed");
blender::MutableSpan<int> values = params.uninitialized_single_output<int>(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] = round_fl_to_int(value * (max_value - min_value) + min_value);
}
}
};
class RandomBoolFunction : public blender::fn::MultiFunction {
public:
RandomBoolFunction()
{
static blender::fn::MFSignature signature = create_signature();
this->set_signature(&signature);
}
static blender::fn::MFSignature create_signature()
{
blender::fn::MFSignatureBuilder signature{"Random"};
signature.single_input<int>("Seed");
signature.single_output<bool>("Value");
return signature.build();
}
void call(blender::IndexMask mask,
blender::fn::MFParams params,
blender::fn::MFContext UNUSED(context)) const override
{
const blender::VArray<int> &seeds = params.readonly_single_input<int>(2, "Seed");
blender::MutableSpan<bool> values = params.uninitialized_single_output<bool>(3, "Value");
for (int64_t i : mask) {
const int seed = seeds[i];
values[i] = BLI_hash_int_2d_to_float(i, seed) > 0.5f;
}
}
};
static void fn_node_random_build_multi_function(blender::nodes::NodeMultiFunctionBuilder &builder)
{
const NodeRandom &storage = *(const NodeRandom *)builder.node().storage;
const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type);
if (data_type == CD_PROP_FLOAT3) {
static RandomVectorFunction fn;
builder.set_matching_fn(fn);
}
else if (data_type == CD_PROP_FLOAT) {
static RandomFloatFunction fn;
builder.set_matching_fn(fn);
}
else if (data_type == CD_PROP_INT32) {
static RandomIntFunction fn;
builder.set_matching_fn(fn);
}
else if (data_type == CD_PROP_BOOL) {
static RandomBoolFunction fn;
builder.set_matching_fn(fn);
}
else {
BLI_assert_unreachable("Unavailable Datatype Specified");
}
}
} // namespace blender::nodes
void register_node_type_fn_random()
{
static bNodeType ntype;
fn_node_type_base(&ntype, FN_NODE_RANDOM, "Random", NODE_CLASS_CONVERTER, 0);
node_type_init(&ntype, blender::nodes::fn_node_random_init);
node_type_update(&ntype, blender::nodes::fn_node_random_update);
ntype.draw_buttons = blender::nodes::fn_node_random_layout;
ntype.declare = blender::nodes::fn_node_random_declare;
ntype.build_multi_function = blender::nodes::fn_node_random_build_multi_function;
node_type_storage(&ntype, "NodeRandom", node_free_standard_storage, node_copy_standard_storage);
nodeRegisterType(&ntype);
}