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Tune hand-tip and palm chip layout coordinates

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Adjust HandTipMatrix / HandPalmChip center, angle, and size in render.rs and propagate the spacing tweak through shader.wgsl.
This commit is contained in:
lenn
2026-07-03 15:30:25 +08:00
parent a999d9c064
commit 5264f0c247
2 changed files with 124 additions and 85 deletions
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37
src/render.rs
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@@ -44,43 +44,43 @@ pub struct HandGatewayMode {
const HAND_TIP_MATRICES: [HandTipMatrix; 5] = [
HandTipMatrix {
center_px: [260.0, 490.0],
center_px: [265.0, 495.0],
size_px: [70.0, 120.0],
angle_rad: -0.45,
angle_rad: -0.40,
},
HandTipMatrix {
center_px: [360.0, 255.0],
center_px: [359.0, 260.0],
size_px: [70.0, 120.0],
angle_rad: -0.05,
angle_rad: -0.17,
},
HandTipMatrix {
center_px: [485.0, 225.0],
center_px: [482.0, 228.0],
size_px: [70.0, 120.0],
angle_rad: 0.0,
angle_rad: -0.03,
},
HandTipMatrix {
center_px: [595.0, 260.0],
center_px: [596.0, 265.0],
size_px: [70.0, 120.0],
angle_rad: 0.12,
angle_rad: 0.10,
},
HandTipMatrix {
center_px: [705.0, 385.0],
center_px: [693.0, 370.0],
size_px: [70.0, 120.0],
angle_rad: 0.28,
angle_rad: 0.22,
},
];
const HAND_PALM_CHIPS: [HandPalmChip; 2] = [
HandPalmChip {
center_px: [538.0, 608.0],
size_px: [248.0, 82.0],
angle_rad: 0.06,
center_px: [530.0, 593.0],
size_px: [224.0, 68.0],
angle_rad: 0.12,
rows: 5,
cols: 14,
},
HandPalmChip {
center_px: [606.0, 780.0],
size_px: [72.0, 214.0],
center_px: [610.0, 778.0],
size_px: [60.0, 190.0],
angle_rad: 0.05,
rows: 11,
cols: 4,
@@ -90,6 +90,7 @@ const HAND_PALM_CHIPS: [HandPalmChip; 2] = [
const HAND_FINGER_SENSOR_CELLS: usize = 12 * 7;
const HAND_PALM_HORIZONTAL_OFFSET: usize = HAND_FINGER_SENSOR_CELLS * 5;
const HAND_PALM_VERTICAL_OFFSET: usize = HAND_PALM_HORIZONTAL_OFFSET + 5 * 14;
const HAND_TIP_DOT_LOCAL_Y_OFFSET_PX: f32 = 14.0;
// Each entry pins one miniature matrix to a fingertip in hand.png.
// Coordinates are authored in source-image pixels so they are easy to tune by eye.
@@ -1144,7 +1145,7 @@ fn build_hand_membrane_instances(image_width: f32, image_height: f32) -> Vec<Gly
.map(|tip| {
let uv_x = tip.center_px[0] / image_width.max(1.0);
let uv_y = tip.center_px[1] / image_height.max(1.0);
let membrane_size = [tip.size_px[0] * 1.62, tip.size_px[1] * 1.56];
let membrane_size = [tip.size_px[0] * 1.44, tip.size_px[1] * 1.36];
GlyphInstance {
// Membrane shaders read xy as hand.png UV.
@@ -1202,7 +1203,9 @@ fn build_hand_dot_instances(
// Lay out a rows x cols matrix in fingertip-local pixel space.
let local_x = (col as f32 - cols as f32 / 2.0 + 0.5) / cols as f32 * tip.size_px[0];
let local_y = (row as f32 - rows as f32 / 2.0 + 0.5) / rows as f32 * tip.size_px[1];
let local_y = (row as f32 - rows as f32 / 2.0 + 0.5) / rows as f32
* tip.size_px[1]
+ HAND_TIP_DOT_LOCAL_Y_OFFSET_PX;
// Rotate the local matrix so it follows the direction of the finger.
let x = tip.center_px[0] + local_x * cos - local_y * sin;