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/*
* Copyright 2011-2013 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 __MESH_H__
#define __MESH_H__
#include "attribute.h"
#include "shader.h"
#include "util_boundbox.h"
#include "util_list.h"
#include "util_map.h"
#include "util_param.h"
#include "util_transform.h"
#include "util_types.h"
#include "util_vector.h"
CCL_NAMESPACE_BEGIN
class BVH;
class Device;
class DeviceScene;
class Mesh;
class Progress;
class Scene;
class SceneParams;
class AttributeRequest;
/* Mesh */
class Mesh {
public:
/* Mesh Triangle */
struct Triangle {
int v[3];
void bounds_grow(const float3 *verts, BoundBox& bounds) const;
};
/* Mesh Curve */
struct Curve {
int first_key;
int num_keys;
uint shader;
int num_segments() { return num_keys - 1; }
void bounds_grow(const int k, const float4 *curve_keys, BoundBox& bounds) const;
};
/* Displacement */
enum DisplacementMethod {
DISPLACE_BUMP,
DISPLACE_TRUE,
DISPLACE_BOTH
};
ustring name;
/* Mesh Data */
enum GeometryFlags {
GEOMETRY_NONE = 0,
GEOMETRY_TRIANGLES = (1 << 0),
GEOMETRY_CURVES = (1 << 1),
};
int geometry_flags; /* used to distinguish meshes with no verts
and meshed for which geometry is not created */
vector<float3> verts;
vector<Triangle> triangles;
vector<uint> shader;
vector<bool> smooth;
bool has_volume; /* Set in the device_update_flags(). */
vector<float4> curve_keys; /* co + radius */
vector<Curve> curves;
vector<uint> used_shaders;
AttributeSet attributes;
AttributeSet curve_attributes;
BoundBox bounds;
bool transform_applied;
bool transform_negative_scaled;
Transform transform_normal;
DisplacementMethod displacement_method;
uint motion_steps;
bool use_motion_blur;
/* Update Flags */
bool need_update;
bool need_update_rebuild;
/* BVH */
BVH *bvh;
size_t tri_offset;
size_t vert_offset;
size_t curve_offset;
size_t curvekey_offset;
/* Functions */
Mesh();
~Mesh();
void reserve(int numverts, int numfaces, int numcurves, int numcurvekeys);
void clear();
void set_triangle(int i, int v0, int v1, int v2, int shader, bool smooth);
void add_triangle(int v0, int v1, int v2, int shader, bool smooth);
void add_curve_key(float3 loc, float radius);
void add_curve(int first_key, int num_keys, int shader);
int split_vertex(int vertex);
void compute_bounds();
void add_face_normals();
void add_vertex_normals();
void pack_normals(Scene *scene, uint *shader, float4 *vnormal);
void pack_verts(float4 *tri_verts, float4 *tri_vindex, size_t vert_offset);
void pack_curves(Scene *scene, float4 *curve_key_co, float4 *curve_data, size_t curvekey_offset);
void compute_bvh(SceneParams *params, Progress *progress, int n, int total);
bool need_attribute(Scene *scene, AttributeStandard std);
bool need_attribute(Scene *scene, ustring name);
void tag_update(Scene *scene, bool rebuild);
bool has_motion_blur() const;
};
/* Mesh Manager */
class MeshManager {
public:
BVH *bvh;
bool need_update;
bool need_flags_update;
MeshManager();
~MeshManager();
bool displace(Device *device, DeviceScene *dscene, Scene *scene, Mesh *mesh, Progress& progress);
/* attributes */
void update_osl_attributes(Device *device, Scene *scene, vector<AttributeRequestSet>& mesh_attributes);
void update_svm_attributes(Device *device, DeviceScene *dscene, Scene *scene, vector<AttributeRequestSet>& mesh_attributes);
void device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
void device_update_object(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
void device_update_mesh(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
void device_update_attributes(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
void device_update_bvh(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
void device_update_flags(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
void device_update_displacement_images(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress);
void device_free(Device *device, DeviceScene *dscene);
void tag_update(Scene *scene);
};
CCL_NAMESPACE_END
#endif /* __MESH_H__ */
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