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Fix Various Absolute Mouse Coordinate Conversion Issues 

This change fixes various absolute mouse coordinate conversion issues. It fixes 1) the video clamping range which instead of from 0 to effectiveWidth (or effectiveHeight) should instead be from 0 to effectiveWidth - 1 (or effectiveHeight - 1), 2) the mouse coordinate size which instead of 32767 should instead be 32768 since the min value is 0x0000 and the max value is 0x7FFF (32767), and 3) a rounding operation which should instead of a truncation operation.
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rmschooley 2025-05-25 20:49:55 -05:00 committed by GitHub
parent 1f7c5c94d8
commit 1f47273468
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1 changed files with 4 additions and 4 deletions
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8
ui/src/components/WebRTCVideo.tsx
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@ -229,16 +229,16 @@ export default function WebRTCVideo() {
}
// Clamp mouse position within the effective video boundaries
const clampedX = Math.min(Math.max(offsetX, e.offsetX), offsetX + effectiveWidth);
const clampedY = Math.min(Math.max(offsetY, e.offsetY), offsetY + effectiveHeight);
const clampedX = Math.min(Math.max(offsetX, e.offsetX), offsetX + effectiveWidth - 1);
const clampedY = Math.min(Math.max(offsetY, e.offsetY), offsetY + effectiveHeight - 1);
// Map clamped mouse position to the video stream's coordinate system
const relativeX = (clampedX - offsetX) / effectiveWidth;
const relativeY = (clampedY - offsetY) / effectiveHeight;
// Convert to HID absolute coordinate system (0-32767 range)
const x = Math.round(relativeX * 32767);
const y = Math.round(relativeY * 32767);
const x = Math.trunc(relativeX * 32768);
const y = Math.trunc(relativeY * 32768);
// Send mouse movement
const { buttons } = e;