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- New tablet configurations: Wacom CTL-4100 (USB only model), XP-Pen G540 Pro, XP-Pen Deco 01 and Huion osu!tablet - Added `ResetDistance` command - Code refactoring.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| #include "stdafx.h" | ||
| #include "PositionRingBuffer.h" | ||
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| // | ||
| // Constructor | ||
| // | ||
| PositionRingBuffer::PositionRingBuffer() { | ||
| maxLength = sizeof(buffer) / sizeof(Vector2D); | ||
| length = 0; | ||
| count = 0; | ||
| index = 0; | ||
| isValid = false; | ||
| } | ||
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| // | ||
| // Destructor | ||
| // | ||
| PositionRingBuffer::~PositionRingBuffer() { | ||
| } | ||
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| // | ||
| // Set buffer length | ||
| // | ||
| void PositionRingBuffer::SetLength(int len) { | ||
| if(len > maxLength) { | ||
| length = maxLength; | ||
| } else { | ||
| length = len; | ||
| } | ||
| } | ||
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| // | ||
| // Add position to buffer | ||
| // | ||
| void PositionRingBuffer::Add(Vector2D vector) { | ||
| buffer[index].x = vector.x; | ||
| buffer[index].y = vector.y; | ||
| index++; | ||
| count++; | ||
| if(count > length) { | ||
| count = length; | ||
| } | ||
| if(index >= length) { | ||
| index = 0; | ||
| } | ||
| isValid = true; | ||
| } | ||
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| // | ||
| // Get position history from the buffer | ||
| // | ||
| bool PositionRingBuffer::GetLatest(Vector2D *output, int delta) { | ||
| int newIndex; | ||
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| // Buffer empty? | ||
| if(count == 0) return false; | ||
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| // Valid delta? | ||
| if(delta > 0 || delta <= -count) return false; | ||
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| newIndex = index - 1 + delta; | ||
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| // Limits | ||
| if(newIndex < 0) newIndex = count + newIndex; | ||
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| if(newIndex < 0 || newIndex >= count) { | ||
| return false; | ||
| } | ||
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| output->x = buffer[newIndex].x; | ||
| output->y = buffer[newIndex].y; | ||
| return true; | ||
| } | ||
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| // | ||
| // Reset buffer | ||
| // | ||
| void PositionRingBuffer::Reset() { | ||
| count = 0; | ||
| index = 0; | ||
| isValid = false; | ||
| } | ||
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| // | ||
| // [] operator | ||
| // | ||
| Vector2D *PositionRingBuffer::operator[](std::size_t index) { | ||
| return &(buffer[index]); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| #pragma once | ||
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| #include "Vector2D.h" | ||
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| class PositionRingBuffer { | ||
| public: | ||
| Vector2D buffer[100]; | ||
| int maxLength; | ||
| int length; | ||
| int count; | ||
| int index; | ||
| bool isValid; | ||
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| void SetLength(int length); | ||
| void Add(Vector2D vector); | ||
| bool GetLatest(Vector2D *output, int delta); | ||
| void Reset(); | ||
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| Vector2D *operator[](std::size_t index); | ||
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| PositionRingBuffer(); | ||
| ~PositionRingBuffer(); | ||
| }; | ||
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