79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
#ifndef VOXEL_GENERATOR_H
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#define VOXEL_GENERATOR_H
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#include "../util/math/vector3f.h"
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#include "../util/span.h"
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#include <core/io/resource.h>
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#include <core/math/vector3i.h>
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#include <core/variant/typed_array.h>
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namespace zylann::voxel {
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class VoxelBufferInternal;
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namespace gd {
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class VoxelBuffer;
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}
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// Non-encoded, generic voxel value.
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// (Voxels stored inside VoxelBuffers are encoded to take less space)
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union VoxelSingleValue {
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uint64_t i;
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float f;
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};
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// Provides access to read-only generated voxels.
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// Must be implemented in a multi-thread-safe way.
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class VoxelGenerator : public Resource {
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GDCLASS(VoxelGenerator, Resource)
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public:
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VoxelGenerator();
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struct Result {
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// Used for block optimization when LOD is used.
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// If this is `false`, more precise data may be found if a lower LOD index is requested.
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// If `true`, any block below this LOD are considered to not bring more details or will be the same.
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// This allows to reduce the number of blocks to load when LOD is used.
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bool max_lod_hint = false;
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};
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struct VoxelQueryData {
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VoxelBufferInternal &voxel_buffer;
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Vector3i origin_in_voxels;
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uint32_t lod;
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};
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virtual Result generate_block(VoxelQueryData &input);
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virtual bool supports_single_generation() const {
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return false;
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}
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virtual bool supports_series_generation() const {
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return false;
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}
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// TODO Not sure if it's a good API regarding performance
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virtual VoxelSingleValue generate_single(Vector3i pos, unsigned int channel);
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virtual void generate_series(Span<const float> positions_x, Span<const float> positions_y,
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Span<const float> positions_z, unsigned int channel, Span<float> out_values, Vector3f min_pos,
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Vector3f max_pos);
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// Declares the channels this generator will use
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virtual int get_used_channels_mask() const;
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#ifdef TOOLS_ENABLED
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virtual void get_configuration_warnings(TypedArray<String> &out_warnings) const {}
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#endif
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protected:
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static void _bind_methods();
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void _b_generate_block(Ref<gd::VoxelBuffer> out_buffer, Vector3 origin_in_voxels, int lod);
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};
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} // namespace zylann::voxel
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#endif // VOXEL_GENERATOR_H
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