fcddf4da61
Adds enough stuff to test the approach. It is not correct at the moment, probably needs to project to triangles to make cells line up, currently it's using planes. There might be incorrect coordinates too, did that with bit of guessing. A grid-like pattern is also showing, so might have to make tiles a bit larger to account for filtering.
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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