PerspectiveCameraUpdateSystem.ixx File

System that updates view and projection matrices for active perspective cameras. More...

Included Headers

#include <helios.engine.core.types.ComponentTypeTags> #include <helios.math> #include <helios.engine.spatial.components> #include <helios.ecs.components> #include <helios.engine.scene.components> #include <helios.engine.runtime.world.UpdateContext> #include <helios.engine.runtime.world.tags.SystemRole>

Namespaces Index

namespace	helios
namespace	engine
namespace	scene
namespace	systems

Classes Index

class	PerspectiveCameraUpdateSystem<TMemberHandle>
	Updates camera transforms for active perspective cameras. More...

Description

System that updates view and projection matrices for active perspective cameras.

File Listing

The file content with the documentation metadata removed is:

1

5module;

6

7export module helios.engine.scene.systems.PerspectiveCameraUpdateSystem;

8

9import helios.engine.runtime.world.tags.SystemRole;

10

11import helios.engine.runtime.world.UpdateContext;

12

13import helios.ecs.components;

14import helios.engine.scene.components;

15import helios.engine.spatial.components;

16

17import helios.math;

18import helios.engine.core.types.ComponentTypeTags;

19

20using namespace helios::engine::core::types;

21using namespace helios::ecs::components;

22using namespace helios::engine::scene::components;

23using namespace helios::engine::spatial::components;

24using namespace helios::engine::runtime::world;

25using namespace helios::engine::runtime::world::tags;

26export namespace helios::engine::scene::systems {

27

36 template<typename TMemberHandle>

37 class PerspectiveCameraUpdateSystem {

38

39 public:

40

44 using EngineRoleTag = SystemRole;

45

51 void update(UpdateContext& updateContext) noexcept {

52

53

54 for (auto [entity, tcw, tp3c, pcc, pmc, vmc, active] : updateContext.view<

55 TMemberHandle,

56 TransformComponent<TMemberHandle, World>,

57 TargetPosition3DComponent<TMemberHandle, World>,

58 PerspectiveCameraComponent<TMemberHandle>,

59 ProjectionMatrixComponent<TMemberHandle>,

60 ViewMatrixComponent<TMemberHandle>,

61 Active<TMemberHandle>

62 >().whereEnabled()) {

63

64 if (tcw->isDirty() || tp3c->isDirty()) {

65 vmc->setValue(helios::math::lookAt(

66 tcw->value().translation(),

67 tp3c->value(),

68 tcw->value().column(1).toVec3().normalize()

69 ));

70 }

71

72

73 if (pcc->isDirty()) {

74 pmc->setValue(helios::math::perspective(

75 pcc->fovY(),

76 pcc->aspectRatio(),

77 pcc->zNear(),

78 pcc->zFar()

79 ));

80 }

81

82 }

83

84 }

85

86

87 };

88

89

90}

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