Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 | import type { EuclidViewportState, ConstructionState, ConstructionPoint } from '../types' import { getAllCircles, getPoint, getRadius } from './constructionState' // ── Auto-fit constants ── export const AUTO_FIT_PAD_PX = 56 export const AUTO_FIT_PAD_PX_MOBILE = 72 export const AUTO_FIT_LERP = 0.12 export const AUTO_FIT_MIN_PPU = 0.2 export const AUTO_FIT_MIN_WORLD_HIT_RADIUS = 0.08 export const AUTO_FIT_MAX_PPU_HEADROOM = 1.1 export const AUTO_FIT_HIT_RADIUS_TOUCH = 44 export const AUTO_FIT_HIT_RADIUS_MOUSE = 30 export const AUTO_FIT_DOCK_GAP = 12 export const AUTO_FIT_SOFT_MARGIN = 24 export const AUTO_FIT_SWEEP_LERP_MIN = 0.03 export const AUTO_FIT_POST_SWEEP_MS = 750 export const AUTO_FIT_MAX_CENTER_PX = 2 export const AUTO_FIT_MAX_PPU_DELTA = 1 export const AUTO_FIT_SWEEP_PPU_DELTA = 3 export const AUTO_FIT_CEREMONY_PPU_DELTA = 4 /** Fraction of pad used as tip margin in the hard visibility constraint */ export const AUTO_FIT_TIP_PAD_FRACTION = 0.5 // ── Viewport centering ── /** Compute a good initial viewport center for a proposition's given elements. */ export function computeInitialViewport( givenElements: readonly { kind: string; x?: number; y?: number }[] ): EuclidViewportState { const points = givenElements.filter( (e) => e.kind === 'point' && e.x !== undefined && e.y !== undefined ) as { x: number; y: number }[] if (points.length === 0) return { center: { x: 0, y: 0 }, pixelsPerUnit: 60 } const minX = Math.min(...points.map((p) => p.x)) const maxX = Math.max(...points.map((p) => p.x)) const minY = Math.min(...points.map((p) => p.y)) const maxY = Math.max(...points.map((p) => p.y)) // Center on given points, shifted up a bit to leave room for construction above const cx = (minX + maxX) / 2 const cy = (minY + maxY) / 2 + 1.5 return { center: { x: cx, y: cy }, pixelsPerUnit: 50 } } export function getAutoFitMaxPpu(isTouch: boolean): number { const hitRadius = isTouch ? AUTO_FIT_HIT_RADIUS_TOUCH : AUTO_FIT_HIT_RADIUS_MOUSE return (hitRadius / AUTO_FIT_MIN_WORLD_HIT_RADIUS) * AUTO_FIT_MAX_PPU_HEADROOM } export function clampPpu(ppu: number, maxPpu: number): number { return Math.max(AUTO_FIT_MIN_PPU, Math.min(maxPpu, ppu)) } export function clampPpuWithMin(ppu: number, minPpu: number, maxPpu: number): number { return Math.max(minPpu, Math.min(maxPpu, ppu)) } export function getConstructionBounds(state: ConstructionState): { minX: number minY: number maxX: number maxY: number } | null { const points = state.elements.filter((e): e is ConstructionPoint => e.kind === 'point') if (points.length === 0) return null let minX = Infinity let minY = Infinity let maxX = -Infinity let maxY = -Infinity for (const pt of points) { minX = Math.min(minX, pt.x) minY = Math.min(minY, pt.y) maxX = Math.max(maxX, pt.x) maxY = Math.max(maxY, pt.y) } for (const circle of getAllCircles(state)) { const r = getRadius(state, circle.id) const centerPoint = getPoint(state, circle.centerId) if (!centerPoint || r <= 0) continue minX = Math.min(minX, centerPoint.x - r) minY = Math.min(minY, centerPoint.y - r) maxX = Math.max(maxX, centerPoint.x + r) maxY = Math.max(maxY, centerPoint.y + r) } return { minX, minY, maxX, maxY } } export function expandBounds( bounds: { minX: number; minY: number; maxX: number; maxY: number }, x: number, y: number, r: number ) { bounds.minX = Math.min(bounds.minX, x - r) bounds.minY = Math.min(bounds.minY, y - r) bounds.maxX = Math.max(bounds.maxX, x + r) bounds.maxY = Math.max(bounds.maxY, y + r) } export function normalizeAngle(angle: number): number { const twoPi = Math.PI * 2 let a = angle % twoPi if (a < 0) a += twoPi return a } export function isAngleOnArc(start: number, end: number, angle: number, ccw: boolean): boolean { if (ccw) { if (end >= start) return angle >= start && angle <= end return angle >= start || angle <= end } if (end <= start) return angle <= start && angle >= end return angle <= start || angle >= end } export function expandBoundsForArc( bounds: { minX: number; minY: number; maxX: number; maxY: number }, cx: number, cy: number, r: number, startAngle: number, sweep: number ) { if (r <= 0) return const ccw = sweep >= 0 const start = normalizeAngle(startAngle) const end = normalizeAngle(startAngle + sweep) const candidates = [start, end, 0, Math.PI / 2, Math.PI, (3 * Math.PI) / 2] for (const a of candidates) { const ang = normalizeAngle(a) if (!isAngleOnArc(start, end, ang, ccw)) continue const x = cx + Math.cos(ang) * r const y = cy + Math.sin(ang) * r bounds.minX = Math.min(bounds.minX, x) bounds.minY = Math.min(bounds.minY, y) bounds.maxX = Math.max(bounds.maxX, x) bounds.maxY = Math.max(bounds.maxY, y) } } export function getFitRect( cssWidth: number, cssHeight: number, canvasRect: DOMRect | null, dockRect: DOMRect | null, pad: number, dockGap: number, reservedBottom: number ) { let left = 0 let right = cssWidth let top = 0 let bottom = Math.max(0, cssHeight - reservedBottom) if (canvasRect && dockRect) { const dockLeft = dockRect.left - canvasRect.left const dockRight = dockRect.right - canvasRect.left const dockTop = dockRect.top - canvasRect.top const dockBottom = dockRect.bottom - canvasRect.top const overlapsY = dockBottom > 0 && dockTop < cssHeight const overlapsX = dockRight > 0 && dockLeft < cssWidth if (overlapsX && overlapsY) { if (dockLeft >= cssWidth / 2) { right = Math.min(right, dockLeft - dockGap) } else if (dockRight <= cssWidth / 2) { left = Math.max(left, dockRight + dockGap) } else if (dockTop >= cssHeight / 2) { bottom = Math.min(bottom, dockTop - dockGap) } else { top = Math.max(top, dockBottom + dockGap) } } } return { left, right, top, bottom, width: Math.max(1, right - left), height: Math.max(1, bottom - top), centerX: (left + right) / 2, centerY: (top + bottom) / 2, } } export function getScreenBounds( bounds: { minX: number; minY: number; maxX: number; maxY: number }, viewport: EuclidViewportState, cssWidth: number, cssHeight: number ) { const toScreenX = (x: number) => (x - viewport.center.x) * viewport.pixelsPerUnit + cssWidth / 2 const toScreenY = (y: number) => (viewport.center.y - y) * viewport.pixelsPerUnit + cssHeight / 2 const sx1 = toScreenX(bounds.minX) const sx2 = toScreenX(bounds.maxX) const sy1 = toScreenY(bounds.minY) const sy2 = toScreenY(bounds.maxY) return { minX: Math.min(sx1, sx2), maxX: Math.max(sx1, sx2), minY: Math.min(sy1, sy2), maxY: Math.max(sy1, sy2), } } export function boundsWithinRect( screenBounds: { minX: number; maxX: number; minY: number; maxY: number }, rect: { left: number; right: number; top: number; bottom: number }, margin: number ) { return ( screenBounds.minX >= rect.left + margin && screenBounds.maxX <= rect.right - margin && screenBounds.minY >= rect.top + margin && screenBounds.maxY <= rect.bottom - margin ) } export function clampViewportToRect( viewport: EuclidViewportState, bounds: { minX: number; minY: number; maxX: number; maxY: number }, rect: { left: number; right: number; top: number; bottom: number }, margin: number, cssWidth: number, cssHeight: number ) { const screenBounds = getScreenBounds(bounds, viewport, cssWidth, cssHeight) let shiftX = 0 let shiftY = 0 if (screenBounds.minX < rect.left + margin) { shiftX = rect.left + margin - screenBounds.minX } else if (screenBounds.maxX > rect.right - margin) { shiftX = rect.right - margin - screenBounds.maxX } if (screenBounds.minY < rect.top + margin) { shiftY = rect.top + margin - screenBounds.minY } else if (screenBounds.maxY > rect.bottom - margin) { shiftY = rect.bottom - margin - screenBounds.maxY } if (shiftX !== 0) { viewport.center.x -= shiftX / viewport.pixelsPerUnit } if (shiftY !== 0) { viewport.center.y += shiftY / viewport.pixelsPerUnit } } export function getScreenBoundsForViewport( bounds: { minX: number; minY: number; maxX: number; maxY: number }, centerX: number, centerY: number, ppu: number, cssWidth: number, cssHeight: number ) { const toScreenX = (x: number) => (x - centerX) * ppu + cssWidth / 2 const toScreenY = (y: number) => (centerY - y) * ppu + cssHeight / 2 const sx1 = toScreenX(bounds.minX) const sx2 = toScreenX(bounds.maxX) const sy1 = toScreenY(bounds.minY) const sy2 = toScreenY(bounds.maxY) return { minX: Math.min(sx1, sx2), maxX: Math.max(sx1, sx2), minY: Math.min(sy1, sy2), maxY: Math.max(sy1, sy2), } } export function clampCenterToRect( centerX: number, centerY: number, ppu: number, bounds: { minX: number; minY: number; maxX: number; maxY: number }, rect: { left: number; right: number; top: number; bottom: number }, margin: number, cssWidth: number, cssHeight: number ) { const screenBounds = getScreenBoundsForViewport( bounds, centerX, centerY, ppu, cssWidth, cssHeight ) let shiftX = 0 let shiftY = 0 if (screenBounds.minX < rect.left + margin) { shiftX = rect.left + margin - screenBounds.minX } else if (screenBounds.maxX > rect.right - margin) { shiftX = rect.right - margin - screenBounds.maxX } if (screenBounds.minY < rect.top + margin) { shiftY = rect.top + margin - screenBounds.minY } else if (screenBounds.maxY > rect.bottom - margin) { shiftY = rect.bottom - margin - screenBounds.maxY } return { centerX: centerX - shiftX / ppu, centerY: centerY + shiftY / ppu, } } export function rotatePoint( pt: { x: number; y: number }, center: { x: number; y: number }, angle: number ) { const cos = Math.cos(angle) const sin = Math.sin(angle) const dx = pt.x - center.x const dy = pt.y - center.y return { x: center.x + dx * cos - dy * sin, y: center.y + dx * sin + dy * cos, } } |