Brecht Van Lommel
9cd2b19999
This does not support staying fixed while the surface deforms, but for static meshes it should match up with the surface texture coordinates. Implemented as a matrix transform from objects space to mesh texture space. Making this work for deforming surfaces would be quite complicated, you might need something like harmonic coordinates as used in the mesh deform modifier, probably will not be possible anytime soon.
151 lines
3.8 KiB
C++
151 lines
3.8 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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#ifndef __ATTRIBUTE_H__
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#define __ATTRIBUTE_H__
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#include "kernel_types.h"
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#include "util_list.h"
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#include "util_param.h"
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#include "util_types.h"
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#include "util_vector.h"
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CCL_NAMESPACE_BEGIN
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class Attribute;
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class AttributeSet;
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class AttributeRequest;
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class AttributeRequestSet;
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class Mesh;
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struct Transform;
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/* Attribute
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*
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* Arbitrary data layers on meshes.
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* Supported types: Float, Color, Vector, Normal, Point */
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class Attribute {
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public:
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ustring name;
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AttributeStandard std;
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TypeDesc type;
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vector<char> buffer;
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AttributeElement element;
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Attribute() {}
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void set(ustring name, TypeDesc type, AttributeElement element);
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void reserve(int numverts, int numfaces, int numcurves, int numkeys);
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size_t data_sizeof() const;
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size_t element_size(int numverts, int numfaces, int numcurves, int numkeys) const;
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size_t buffer_size(int numverts, int numfaces, int numcurves, int numkeys) const;
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char *data() { return (buffer.size())? &buffer[0]: NULL; };
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float3 *data_float3() { return (float3*)data(); }
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float *data_float() { return (float*)data(); }
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Transform *data_transform() { return (Transform*)data(); }
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const char *data() const { return (buffer.size())? &buffer[0]: NULL; }
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const float3 *data_float3() const { return (const float3*)data(); }
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const float *data_float() const { return (const float*)data(); }
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const Transform *data_transform() const { return (const Transform*)data(); }
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void add(const float& f);
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void add(const float3& f);
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void add(const Transform& f);
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static bool same_storage(TypeDesc a, TypeDesc b);
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static const char *standard_name(AttributeStandard std);
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};
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/* Attribute Set
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*
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* Set of attributes on a mesh. */
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class AttributeSet {
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public:
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Mesh *triangle_mesh;
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Mesh *curve_mesh;
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list<Attribute> attributes;
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AttributeSet();
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~AttributeSet();
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Attribute *add(ustring name, TypeDesc type, AttributeElement element);
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Attribute *find(ustring name) const;
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void remove(ustring name);
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Attribute *add(AttributeStandard std, ustring name = ustring());
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Attribute *find(AttributeStandard std) const;
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void remove(AttributeStandard std);
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Attribute *find(AttributeRequest& req);
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void reserve();
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void clear();
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};
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/* AttributeRequest
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*
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* Request from a shader to use a certain attribute, so we can figure out
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* which ones we need to export from the host app end store for the kernel.
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* The attribute is found either by name or by standard attribute type. */
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class AttributeRequest {
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public:
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ustring name;
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AttributeStandard std;
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/* temporary variables used by MeshManager */
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TypeDesc triangle_type, curve_type;
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AttributeElement triangle_element, curve_element;
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int triangle_offset, curve_offset;
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AttributeRequest(ustring name_);
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AttributeRequest(AttributeStandard std);
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};
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/* AttributeRequestSet
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*
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* Set of attributes requested by a shader. */
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class AttributeRequestSet {
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public:
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vector<AttributeRequest> requests;
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AttributeRequestSet();
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~AttributeRequestSet();
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void add(ustring name);
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void add(AttributeStandard std);
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void add(AttributeRequestSet& reqs);
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bool find(ustring name);
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bool find(AttributeStandard std);
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size_t size();
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void clear();
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bool modified(const AttributeRequestSet& other);
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};
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CCL_NAMESPACE_END
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#endif /* __ATTRIBUTE_H__ */
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