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36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
// SPDX-FileCopyrightText: 2019-2026 Connor McLaughlin <stenzek@gmail.com>
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// SPDX-License-Identifier: CC-BY-NC-ND-4.0
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#pragma once
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#include "common/types.h"
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#include <cmath>
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namespace ControllerHelpers {
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/// Returns true if the specified coordinates are inside a circular deadzone.
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ALWAYS_INLINE bool InCircularDeadzone(float deadzone, float pos_x, float pos_y)
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{
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// Calculate the actual distance from center, and compare to deadzone radius.
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const float distance = std::sqrt(pos_x * pos_x + pos_y * pos_y);
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return (distance <= deadzone);
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}
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/// Converts a 0..255 half-axis value to an unsigned 8-bit value, with 128 indicating center.
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ALWAYS_INLINE u8 MergeHalfAxes(u8 neg_value, u8 pos_value, bool invert)
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{
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if (invert)
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std::swap(neg_value, pos_value);
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return static_cast<u8>(128 + (static_cast<u32>(pos_value) / 2) - ((static_cast<u32>(neg_value) + 1) / 2));
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}
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/// Converts a 0..255 half-axis value to a normalized floating-point value, with 0 indicating center.
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ALWAYS_INLINE float MergeHalfAxesToFloat(u8 neg_value, u8 pos_value, bool invert)
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{
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const float result = (static_cast<s32>(pos_value) - static_cast<s32>(neg_value)) / 255.0f;
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return (invert ? -result : result);
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}
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} // namespace ControllerHelpers
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