Jonathan Calvert
94 lines
2.4 KiB
JavaScript
94 lines
2.4 KiB
JavaScript
/**
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* Functions taken directly from the hex-size-support module (https://github.com/Ourobor/Hex-Size-Support/releases/tag/1.1.0).
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* Unless otherwise stated, these functions are taken as-is.
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*/
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/**
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* Altered version of this function.
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* - Instead of taking a token as a parameter to retrieve the altOrientationFlag, receive the flag value directly
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* - Instead of taking a grid parameter, get the grid value from the globas canvas
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*/
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export function findVertexSnapPoint(x, y, altOrientationFlag) {
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const grid = canvas.grid.grid;
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if (grid.columns) {
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return findSnapPointCols(x, y, grid.h, grid.w, altOrientationFlag);
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} else {
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return findSnapPointRows(x, y, grid.h, grid.w, altOrientationFlag);
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}
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}
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function findSnapPointRows(x, y, h, w, alt) {
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let xOffset = 0.0
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if (canvas.grid.grid.even) {
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xOffset = -0.5
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}
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let yOffset1 = 0.75
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let yOffset2 = 0.00
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if (alt) {
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yOffset1 = 0.25
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yOffset2 = 1.00
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}
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let row1 = calculateSnapPointsRows(x, y, h, w, 0.5 + xOffset, yOffset1);
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let row2 = calculateSnapPointsRows(x, y, h, w, 1.0 + xOffset, yOffset2);
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let dist1 = Math.pow((row1.x - x), 2) + Math.pow((row1.y - y), 2)
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let dist2 = Math.pow((row2.x - x), 2) + Math.pow((row2.y - y), 2)
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if (dist1 < dist2) {
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return row1
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}
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else {
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return row2
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}
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}
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function calculateSnapPointsRows(x, y, h, w, xOff, yOff) {
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let c = Math.floor(((x + ((0.5 - xOff) * w)) / w) + 1)
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let r = Math.floor(((y + ((0.75 - yOff) * h)) / (1.5 * h)) + 1)
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let snapX = (c * w) - ((1 - xOff) * w)
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let snapY = (r * h * 1.5) - ((1.5 - yOff) * h)
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return {x: snapX, y: snapY}
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}
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function findSnapPointCols(x, y, h, w, alt) {
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let yOffset = 0.0
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if (canvas.grid.grid.even) {
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yOffset = -0.5
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}
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let xOffset1 = 0.25
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let xOffset2 = 1.00
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if (alt) {
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xOffset1 = 0.75
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xOffset2 = 0.00
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}
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let row1 = calculateSnapPointsCols(x, y, h, w, xOffset1, 0.5 + yOffset);
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let row2 = calculateSnapPointsCols(x, y, h, w, xOffset2, 1.0 + yOffset);
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let dist1 = Math.pow((row1.x - x), 2) + Math.pow((row1.y - y), 2)
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let dist2 = Math.pow((row2.x - x), 2) + Math.pow((row2.y - y), 2)
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if (dist1 < dist2) {
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return row1
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}
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else {
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return row2
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}
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}
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function calculateSnapPointsCols(x, y, h, w, xOff, yOff) {
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let c = Math.floor(((x + ((0.75 - xOff) * w)) / (1.5 * w)) + 1)
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let r = Math.floor(((y + ((0.5 - yOff) * h)) / h) + 1)
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let snapX = (c * w * 1.5) - ((1.5 - xOff) * w)
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let snapY = (r * h) - ((1 - yOff) * h)
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return {x: snapX, y: snapY}
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}
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