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Diffstat (limited to 'intern/cycles/scene/hair.h')
| -rw-r--r-- | intern/cycles/scene/hair.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/intern/cycles/scene/hair.h b/intern/cycles/scene/hair.h new file mode 100644 index 00000000000..832015058fe --- /dev/null +++ b/intern/cycles/scene/hair.h @@ -0,0 +1,164 @@ +/* + * Copyright 2011-2020 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __HAIR_H__ +#define __HAIR_H__ + +#include "scene/geometry.h" + +CCL_NAMESPACE_BEGIN + +struct KernelCurveSegment; + +class Hair : public Geometry { + public: + NODE_DECLARE + + /* Hair Curve */ + struct Curve { + int first_key; + int num_keys; + + int num_segments() const + { + return num_keys - 1; + } + + void bounds_grow(const int k, + const float3 *curve_keys, + const float *curve_radius, + BoundBox &bounds) const; + void bounds_grow(float4 keys[4], BoundBox &bounds) const; + void bounds_grow(const int k, + const float3 *curve_keys, + const float *curve_radius, + const Transform &aligned_space, + BoundBox &bounds) const; + + void motion_keys(const float3 *curve_keys, + const float *curve_radius, + const float3 *key_steps, + size_t num_curve_keys, + size_t num_steps, + float time, + size_t k0, + size_t k1, + float4 r_keys[2]) const; + void cardinal_motion_keys(const float3 *curve_keys, + const float *curve_radius, + const float3 *key_steps, + size_t num_curve_keys, + size_t num_steps, + float time, + size_t k0, + size_t k1, + size_t k2, + size_t k3, + float4 r_keys[4]) const; + + void keys_for_step(const float3 *curve_keys, + const float *curve_radius, + const float3 *key_steps, + size_t num_curve_keys, + size_t num_steps, + size_t step, + size_t k0, + size_t k1, + float4 r_keys[2]) const; + void cardinal_keys_for_step(const float3 *curve_keys, + const float *curve_radius, + const float3 *key_steps, + size_t num_curve_keys, + size_t num_steps, + size_t step, + size_t k0, + size_t k1, + size_t k2, + size_t k3, + float4 r_keys[4]) const; + }; + + NODE_SOCKET_API_ARRAY(array<float3>, curve_keys) + NODE_SOCKET_API_ARRAY(array<float>, curve_radius) + NODE_SOCKET_API_ARRAY(array<int>, curve_first_key) + NODE_SOCKET_API_ARRAY(array<int>, curve_shader) + + /* BVH */ + size_t curve_key_offset; + size_t curve_segment_offset; + CurveShapeType curve_shape; + + /* Constructor/Destructor */ + Hair(); + ~Hair(); + + /* Geometry */ + void clear(bool preserve_shaders = false) override; + + void resize_curves(int numcurves, int numkeys); + void reserve_curves(int numcurves, int numkeys); + void add_curve_key(float3 loc, float radius); + void add_curve(int first_key, int shader); + + void copy_center_to_motion_step(const int motion_step); + + void compute_bounds() override; + void apply_transform(const Transform &tfm, const bool apply_to_motion) override; + + /* Curves */ + Curve get_curve(size_t i) const + { + int first = curve_first_key[i]; + int next_first = (i + 1 < curve_first_key.size()) ? curve_first_key[i + 1] : curve_keys.size(); + + Curve curve = {first, next_first - first}; + return curve; + } + + size_t num_keys() const + { + return curve_keys.size(); + } + + size_t num_curves() const + { + return curve_first_key.size(); + } + + size_t num_segments() const + { + return curve_keys.size() - curve_first_key.size(); + } + + /* UDIM */ + void get_uv_tiles(ustring map, unordered_set<int> &tiles) override; + + /* BVH */ + void pack_curves(Scene *scene, + float4 *curve_key_co, + KernelCurve *curve, + KernelCurveSegment *curve_segments); + + PrimitiveType primitive_type() const override; + + /* Attributes */ + bool need_shadow_transparency(); + bool update_shadow_transparency(Device *device, Scene *scene, Progress &progress); +}; + +CCL_NAMESPACE_END + +#endif /* __HAIR_H__ */ |