forked from bartvdbraak/blender
152 lines
4.5 KiB
C++
152 lines
4.5 KiB
C++
/*
|
|
* 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 "render/geometry.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
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;
|
|
};
|
|
|
|
array<float3> curve_keys;
|
|
array<float> curve_radius;
|
|
array<int> curve_first_key;
|
|
array<int> curve_shader;
|
|
|
|
/* BVH */
|
|
size_t curvekey_offset;
|
|
|
|
/* Constructor/Destructor */
|
|
Hair();
|
|
~Hair();
|
|
|
|
/* Geometry */
|
|
void clear() 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, float4 *curve_data, size_t curvekey_offset);
|
|
};
|
|
|
|
CCL_NAMESPACE_END
|
|
|
|
#endif /* __HAIR_H__ */
|