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 | import type { SlopeIncline } from "store/features/editor/editorState";
import { areRelativelyEqual } from "./math";
export const calculateSlope = (
startX: number,
startY: number,
endX: number,
endY: number,
slopeDirectionHorizontal: "left" | "right",
slopeDirectionVertical: "left" | "right",
wallMode: boolean
) => {
let newEndX = endX;
let newEndY = endY;
let slopeIncline: SlopeIncline = "medium";
const diffX = newEndX - startX;
const diffY = newEndY - startY;
const signX = Math.sign(diffX);
let signY = Math.sign(diffY);
if (wallMode) {
if (Math.abs(diffY) > Math.abs(diffX)) {
// Vertical
newEndX = startX;
} else {
// Horizontal
newEndY = startY;
}
} else if (areRelativelyEqual(Math.abs(diffX), Math.abs(diffY), 0.4)) {
// drawing 45 degree line
const length = Math.max(Math.abs(diffX), Math.abs(diffY));
newEndX = startX + Math.sign(diffX) * length;
newEndY = startY + Math.sign(diffY) * length;
slopeIncline = "medium";
} else {
if (Math.abs(diffY) > Math.abs(diffX)) {
// Steep slope - Create 45 deg for now
const length = Math.max(Math.abs(diffX), Math.abs(diffY));
newEndX = startX + (Math.sign(diffX) || 1) * length;
newEndY = startY + Math.sign(diffY) * length;
slopeIncline = "medium";
} else {
// Shallow slope
slopeIncline = "shallow";
const length = Math.max(Math.abs(diffX), Math.abs(diffY));
Iif (startY === endY) {
if (slopeDirectionHorizontal === "left") {
signY = 1;
} else {
signY = -1;
}
}
newEndX = startX + signX * length;
newEndY = startY + signY * length * 0.5;
}
}
return {
endX: newEndX,
endY: newEndY,
slopeIncline,
};
};
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