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CullNoneStrategy.ixx File

Frustum culling strategy that returns all nodes (no culling). More...

Included Headers​

#include <vector> #include <helios.scene.SceneNode> #include <helios.scene.CameraSceneNode> #include <helios.scene.FrustumCullingStrategy>

Namespaces Index​

namespacehelios
namespacescene

Scene graph and camera management. More...

Classes Index​

classCullNoneStrategy

A default FrustumCullingStrategy that simply returns all SceneNodes found, e.g. no culling is applied. More...

Description​

Frustum culling strategy that returns all nodes (no culling).

File Listing​

The file content with the documentation metadata removed is:

1/**
2 * @file CullNoneStrategy.ixx
3 * @brief Frustum culling strategy that returns all nodes (no culling).
4 */
5module;
6
7#include <vector>
8
9export module helios.scene.CullNoneStrategy;
10
11import helios.scene.FrustumCullingStrategy;
12import helios.scene.CameraSceneNode;
13import helios.scene.SceneNode;
14
15export namespace helios::scene {
16
17
18 /**
19 * @brief A default FrustumCullingStrategy that simply returns all
20 * SceneNodes found, e.g. no culling is applied.
21 */
22 class CullNoneStrategy final : public helios::scene::FrustumCullingStrategy {
23
24
25 protected:
26 /**
27 * @brief Internal function to populate the vector recursively with the node and its children.
28 *
29 * @param nodes The vector holding the const pointers to the SceneNodes
30 * @param node The current node to process. This node is added to nodes, then this
31 * method is called for each child node of node.
32 */
33 void cull(
34 std::vector<const helios::scene::SceneNode*>& nodes, const SceneNode& node
35 ) const {
36 if (node.isActive()) {
37 nodes.push_back(&node);
38 }
39 for (auto& child: node.children()) {
40 cull(nodes, *child);
41 }
42 }
43
44
45 public:
46
47 /**
48 * @brief Returns all SceneNode of the specified scene, regardless of their visibility
49 * relative to the CameraSceneNode's camera view frustum.
50 *
51 * @param cameraSceneNode The camera defining the view frustum.
52 * @param root The parent of the hierarchy to cull.
53 *
54 * @return A vector with const pointers to the SceneNodes found under `root`.
55 */
56 [[nodiscard]] std::vector<const helios::scene::SceneNode*> cull(
57 const helios::scene::CameraSceneNode* cameraSceneNode, const helios::scene::SceneNode& root
58 ) override {
59
60 auto nodes = std::vector<const helios::scene::SceneNode*>();
61
62 cull(nodes, root);
63
64 return nodes;
65 }
66
67
68 };
69}

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