diff options
Diffstat (limited to 'source/blender/nodes/geometry/nodes/legacy/node_geo_attribute_randomize.cc')
| -rw-r--r-- | source/blender/nodes/geometry/nodes/legacy/node_geo_attribute_randomize.cc | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/source/blender/nodes/geometry/nodes/legacy/node_geo_attribute_randomize.cc b/source/blender/nodes/geometry/nodes/legacy/node_geo_attribute_randomize.cc new file mode 100644 index 00000000000..2e6ba456725 --- /dev/null +++ b/source/blender/nodes/geometry/nodes/legacy/node_geo_attribute_randomize.cc @@ -0,0 +1,344 @@ +/* + * 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 "BLI_rand.hh" +#include "BLI_task.hh" + +#include "UI_interface.h" +#include "UI_resources.h" + +#include "node_geometry_util.hh" + +namespace blender::nodes { + +static void geo_node_legacy_attribute_randomize_declare(NodeDeclarationBuilder &b) +{ + b.add_input<decl::Geometry>("Geometry"); + b.add_input<decl::String>("Attribute"); + 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").min(-10000).max(10000); + b.add_output<decl::Geometry>("Geometry"); +} + +static void geo_node_legacy_attribute_random_layout(uiLayout *layout, + bContext *UNUSED(C), + PointerRNA *ptr) +{ + uiItemR(layout, ptr, "data_type", 0, "", ICON_NONE); + uiItemR(layout, ptr, "operation", 0, "", ICON_NONE); +} + +static void geo_node_legacy_attribute_randomize_init(bNodeTree *UNUSED(tree), bNode *node) +{ + NodeAttributeRandomize *data = (NodeAttributeRandomize *)MEM_callocN( + sizeof(NodeAttributeRandomize), __func__); + data->data_type = CD_PROP_FLOAT; + data->domain = ATTR_DOMAIN_POINT; + data->operation = GEO_NODE_ATTRIBUTE_RANDOMIZE_REPLACE_CREATE; + node->storage = data; +} + +static void geo_node_legacy_attribute_randomize_update(bNodeTree *UNUSED(ntree), bNode *node) +{ + bNodeSocket *sock_min_vector = (bNodeSocket *)BLI_findlink(&node->inputs, 2); + 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; + + const NodeAttributeRandomize &storage = *(const NodeAttributeRandomize *)node->storage; + const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type); + 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); +} + +template<typename T> +T random_value_in_range(const uint32_t id, const uint32_t seed, const T min, const T max); + +template<> +inline float random_value_in_range(const uint32_t id, + const uint32_t seed, + const float min, + const float max) +{ + return BLI_hash_int_2d_to_float(id, seed) * (max - min) + min; +} + +template<> +inline int random_value_in_range(const uint32_t id, + const uint32_t seed, + const int min, + const int max) +{ + return round_fl_to_int( + random_value_in_range<float>(id, seed, static_cast<float>(min), static_cast<float>(max))); +} + +template<> +inline float3 random_value_in_range(const uint32_t id, + const uint32_t seed, + const float3 min, + const float3 max) +{ + const float x = BLI_hash_int_3d_to_float(seed, id, 435109); + const float y = BLI_hash_int_3d_to_float(seed, id, 380867); + const float z = BLI_hash_int_3d_to_float(seed, id, 1059217); + + return float3(x, y, z) * (max - min) + min; +} + +template<typename T> +static void randomize_attribute(MutableSpan<T> span, + const T min, + const T max, + Span<uint32_t> ids, + const uint32_t seed, + const GeometryNodeAttributeRandomizeMode operation) +{ + /* The operations could be templated too, but it doesn't make the code much shorter. */ + switch (operation) { + case GEO_NODE_ATTRIBUTE_RANDOMIZE_REPLACE_CREATE: + threading::parallel_for(span.index_range(), 512, [&](IndexRange range) { + for (const int i : range) { + const T random_value = random_value_in_range<T>(ids[i], seed, min, max); + span[i] = random_value; + } + }); + break; + case GEO_NODE_ATTRIBUTE_RANDOMIZE_ADD: + threading::parallel_for(span.index_range(), 512, [&](IndexRange range) { + for (const int i : range) { + const T random_value = random_value_in_range<T>(ids[i], seed, min, max); + span[i] = span[i] + random_value; + } + }); + break; + case GEO_NODE_ATTRIBUTE_RANDOMIZE_SUBTRACT: + threading::parallel_for(span.index_range(), 512, [&](IndexRange range) { + for (const int i : range) { + const T random_value = random_value_in_range<T>(ids[i], seed, min, max); + span[i] = span[i] - random_value; + } + }); + break; + case GEO_NODE_ATTRIBUTE_RANDOMIZE_MULTIPLY: + threading::parallel_for(span.index_range(), 512, [&](IndexRange range) { + for (const int i : range) { + const T random_value = random_value_in_range<T>(ids[i], seed, min, max); + span[i] = span[i] * random_value; + } + }); + break; + default: + BLI_assert(false); + break; + } +} + +static void randomize_attribute_bool(MutableSpan<bool> span, + Span<uint32_t> ids, + const uint32_t seed, + const GeometryNodeAttributeRandomizeMode operation) +{ + BLI_assert(operation == GEO_NODE_ATTRIBUTE_RANDOMIZE_REPLACE_CREATE); + UNUSED_VARS_NDEBUG(operation); + threading::parallel_for(span.index_range(), 512, [&](IndexRange range) { + for (const int i : range) { + const bool random_value = BLI_hash_int_2d_to_float(ids[i], seed) > 0.5f; + span[i] = random_value; + } + }); +} + +Array<uint32_t> get_geometry_element_ids_as_uints(const GeometryComponent &component, + const AttributeDomain domain) +{ + const int domain_size = component.attribute_domain_size(domain); + + /* Hash the reserved name attribute "id" as a (hopefully) stable seed for each point. */ + GVArrayPtr hash_attribute = component.attribute_try_get_for_read("id", domain); + Array<uint32_t> hashes(domain_size); + if (hash_attribute) { + BLI_assert(hashes.size() == hash_attribute->size()); + const CPPType &cpp_type = hash_attribute->type(); + BLI_assert(cpp_type.is_hashable()); + GVArray_GSpan items{*hash_attribute}; + threading::parallel_for(hashes.index_range(), 512, [&](IndexRange range) { + for (const int i : range) { + hashes[i] = cpp_type.hash(items[i]); + } + }); + } + else { + /* If there is no "id" attribute for per-point variation, just create it here. */ + RandomNumberGenerator rng(0); + for (const int i : hashes.index_range()) { + hashes[i] = rng.get_uint32(); + } + } + + return hashes; +} + +static AttributeDomain get_result_domain(const GeometryComponent &component, + const GeoNodeExecParams ¶ms, + const StringRef name) +{ + /* Use the domain of the result attribute if it already exists. */ + std::optional<AttributeMetaData> result_info = component.attribute_get_meta_data(name); + if (result_info) { + return result_info->domain; + } + + /* Otherwise use the input domain chosen in the interface. */ + const bNode &node = params.node(); + return static_cast<AttributeDomain>(node.custom2); +} + +static void randomize_attribute_on_component(GeometryComponent &component, + const GeoNodeExecParams ¶ms, + StringRef attribute_name, + const CustomDataType data_type, + const GeometryNodeAttributeRandomizeMode operation, + const int seed) +{ + /* If the node is not in "replace / create" mode and the attribute + * doesn't already exist, don't do the operation. */ + if (operation != GEO_NODE_ATTRIBUTE_RANDOMIZE_REPLACE_CREATE) { + if (!component.attribute_exists(attribute_name)) { + params.error_message_add(NodeWarningType::Error, + TIP_("No attribute with name \"") + attribute_name + "\""); + return; + } + } + + const AttributeDomain domain = get_result_domain(component, params, attribute_name); + + OutputAttribute attribute = component.attribute_try_get_for_output( + attribute_name, domain, data_type); + if (!attribute) { + return; + } + + GMutableSpan span = attribute.as_span(); + + Array<uint32_t> hashes = get_geometry_element_ids_as_uints(component, domain); + + switch (data_type) { + case CD_PROP_FLOAT3: { + const float3 min = params.get_input<float3>("Min"); + const float3 max = params.get_input<float3>("Max"); + randomize_attribute<float3>(span.typed<float3>(), min, max, hashes, seed, operation); + break; + } + case CD_PROP_FLOAT: { + const float min = params.get_input<float>("Min_001"); + const float max = params.get_input<float>("Max_001"); + randomize_attribute<float>(span.typed<float>(), min, max, hashes, seed, operation); + break; + } + case CD_PROP_BOOL: { + randomize_attribute_bool(span.typed<bool>(), hashes, seed, operation); + break; + } + case CD_PROP_INT32: { + const int min = params.get_input<int>("Min_002"); + const int max = params.get_input<int>("Max_002"); + randomize_attribute<int>(span.typed<int>(), min, max, hashes, seed, operation); + break; + } + default: { + BLI_assert(false); + break; + } + } + + attribute.save(); +} + +static void geo_node_legacy_random_attribute_exec(GeoNodeExecParams params) +{ + GeometrySet geometry_set = params.extract_input<GeometrySet>("Geometry"); + const std::string attribute_name = params.get_input<std::string>("Attribute"); + if (attribute_name.empty()) { + params.set_output("Geometry", geometry_set); + return; + } + const int seed = params.get_input<int>("Seed"); + const NodeAttributeRandomize &storage = *(const NodeAttributeRandomize *)params.node().storage; + const CustomDataType data_type = static_cast<CustomDataType>(storage.data_type); + const GeometryNodeAttributeRandomizeMode operation = + static_cast<GeometryNodeAttributeRandomizeMode>(storage.operation); + + geometry_set = geometry_set_realize_instances(geometry_set); + + if (geometry_set.has<MeshComponent>()) { + randomize_attribute_on_component(geometry_set.get_component_for_write<MeshComponent>(), + params, + attribute_name, + data_type, + operation, + seed); + } + if (geometry_set.has<PointCloudComponent>()) { + randomize_attribute_on_component(geometry_set.get_component_for_write<PointCloudComponent>(), + params, + attribute_name, + data_type, + operation, + seed); + } + if (geometry_set.has<CurveComponent>()) { + randomize_attribute_on_component(geometry_set.get_component_for_write<CurveComponent>(), + params, + attribute_name, + data_type, + operation, + seed); + } + + params.set_output("Geometry", geometry_set); +} + +} // namespace blender::nodes + +void register_node_type_geo_legacy_attribute_randomize() +{ + static bNodeType ntype; + + geo_node_type_base( + &ntype, GEO_NODE_LEGACY_ATTRIBUTE_RANDOMIZE, "Attribute Randomize", NODE_CLASS_ATTRIBUTE, 0); + node_type_init(&ntype, blender::nodes::geo_node_legacy_attribute_randomize_init); + node_type_update(&ntype, blender::nodes::geo_node_legacy_attribute_randomize_update); + + ntype.declare = blender::nodes::geo_node_legacy_attribute_randomize_declare; + ntype.geometry_node_execute = blender::nodes::geo_node_legacy_random_attribute_exec; + ntype.draw_buttons = blender::nodes::geo_node_legacy_attribute_random_layout; + node_type_storage( + &ntype, "NodeAttributeRandomize", node_free_standard_storage, node_copy_standard_storage); + nodeRegisterType(&ntype); +} |