| // Copyright 2017 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef GARNET_LIB_UI_GFX_RESOURCES_SHAPES_SHAPE_H_ |
| #define GARNET_LIB_UI_GFX_RESOURCES_SHAPES_SHAPE_H_ |
| |
| #include "garnet/lib/ui/gfx/resources/resource.h" |
| #include "lib/escher/geometry/types.h" |
| #include "lib/escher/scene/object.h" |
| |
| namespace scenic_impl { |
| namespace gfx { |
| |
| class Shape : public Resource { |
| public: |
| static const ResourceTypeInfo kTypeInfo; |
| |
| // Computes the closest point of intersection between the ray's origin |
| // and the front side of the shape. |
| // |
| // |out_distance| is set to the distance from the ray's origin to the |
| // closest point of intersection in multiples of the ray's direction vector. |
| // |
| // Returns true if there is an intersection, otherwise returns false and |
| // leaves |out_distance| unmodified. |
| virtual bool GetIntersection(const escher::ray4& ray, |
| float* out_distance) const = 0; |
| |
| // Generate an object to add to an escher::Model. |
| virtual escher::Object GenerateRenderObject( |
| const escher::mat4& transform, const escher::MaterialPtr& material) = 0; |
| |
| protected: |
| Shape(Session* session, ResourceId id, const ResourceTypeInfo& type_info); |
| }; |
| |
| using ShapePtr = fxl::RefPtr<Shape>; |
| |
| } // namespace gfx |
| } // namespace scenic_impl |
| |
| #endif // GARNET_LIB_UI_GFX_RESOURCES_SHAPES_SHAPE_H_ |