1 #ifndef DALI_INTERNAL_SCENE_GRAPH_RENDER_ITEM_H
2 #define DALI_INTERNAL_SCENE_GRAPH_RENDER_ITEM_H
5 * Copyright (c) 2018 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/common/vector-wrapper.h>
23 #include <dali/public-api/actors/layer.h>
24 #include <dali/public-api/math/matrix.h>
25 #include <dali/internal/update/nodes/node.h>
37 * A RenderItem contains all the data needed for rendering
42 * Construct a new RenderItem
43 * @return A pointer to a new RenderItem.
45 static RenderItem* New();
48 * Non-virtual destructor; RenderItem is not suitable as a base class.
53 * @brief This method is an optimized calculation of a viewport-space AABB (Axis-Aligned-Bounding-Box).
55 * We use the model-view-matrix, but we do not use projection. Therefore we assume Z = 0.
56 * As the box is Axis-Aligned (in viewport space) rotations on Z axis are correctly delt with by expanding the box as necessary.
57 * Rotations on X & Y axis will resize the AABB, but it will not handle the projection error due to the new coordinates having non-zero Z values.
59 * Note: We pass in the viewport dimensions rather than allow the caller to modify the raw AABB in order to optimally generate the final result.
61 * @param[in] viewportWidth The width of the viewport to calculate for
62 * @param[in] viewportHeight The height of the viewport to calculate for
63 * @return The AABB coordinates in viewport-space (x, y, width, height)
65 ClippingBox CalculateViewportSpaceAABB( const int viewportWidth, const int viewportHeight ) const;
68 * Overriden delete operator.
69 * Deletes the RenderItem from its global memory pool
70 * @param[in] A pointer to the RenderItem to delete.
72 void operator delete( void* ptr );
75 Matrix mModelViewMatrix;
78 const void* mTextureSet; //< Used for sorting only
85 * Private constructor. See RenderItem::New
89 // RenderItems should not be copied as they are heavy
90 RenderItem( const RenderItem& item );
91 RenderItem& operator = ( const RenderItem& item );
95 } // namespace SceneGraph
97 } // namespace Internal
101 #endif // DALI_INTERNAL_SCENE_GRAPH_RENDER_ITEM_H