RadialDeadzoneStrategy.ixx File

Radial (circular) deadzone strategy for gamepad analog stick input. More...

Included Headers

#include <cmath> #include <helios.math.utils> #include <helios.engine.input.gamepad.DeadzoneStrategy>

Namespaces Index

namespace	helios
namespace	engine
namespace	input
namespace	gamepad

Classes Index

class	RadialDeadzoneStrategy
	Implements a radial (circular) deadzone strategy for analog stick normalization. More...

Description

Radial (circular) deadzone strategy for gamepad analog stick input.

File Listing

The file content with the documentation metadata removed is:

1

5module;

6

7#include <cmath>

8

9export module helios.engine.input.gamepad.RadialDeadzoneStrategy;

10

11import helios.engine.input.gamepad.DeadzoneStrategy;

12import helios.math.utils;

13

14

15export namespace helios::engine::input::gamepad {

16

37 class RadialDeadzoneStrategy : public DeadzoneStrategy {

38

39 public:

40

44 RadialDeadzoneStrategy() : DeadzoneStrategy() {}

45

49 RadialDeadzoneStrategy(float stickNoiseThreshold) : DeadzoneStrategy(stickNoiseThreshold) {}

50

61 void normalize(float deadzone, float& x, float& y) const noexcept override {

62

63 auto len = std::hypot(x, y);

64

65 if (len <= stickNoiseThreshold() || len <= deadzone || deadzone >= 1.0f) {

66 x = 0;

67 y = 0;

68 return;

69 }

70

71 const float clampedLen = len > 1.0f ? 1.0f : len;

72

73 const float normalizedLen = (clampedLen - deadzone)/(1.0f - deadzone);

74

75 const float scale = normalizedLen / len;

76

77 x *= scale;

78 y *= scale;

79 }

80

81

82 };

83

84

85}

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