Reference · Surface maze rules and geometry
cellsAlongDragfunction
The cells a straight drag from one point to another crosses, in order, by sampling it finely enough that no cell the drag passes through is missed.
Import it
import { cellsAlongDrag } from "@johnmorrisdotca/meikyuu/3d";Definition
function cellsAlongDrag(frame: SolidFrame, grid: SolidGrid, from: readonly [number, number], to: readonly [number, number]): number[]Parameters
| Name | Type | Description |
|---|---|---|
frame | SolidFrame | The current projected surface-view arrays and dimensions. |
grid | SolidGrid | The valid native flat or surface cell graph. |
from | readonly [number, number] | The start cell or pointer point specified by the signature. |
to | readonly [number, number] | The destination pointer point specified by the signature. |
Returns
number[]
The cells a straight drag from one point to another crosses, in order, by sampling it finely enough that no cell the drag passes through is missed.
Examples
import type { MazeRecipe } from "@johnmorrisdotca/meikyuu";
import { buildMaze } from "@johnmorrisdotca/meikyuu";
import type { Quat, SolidRecipe } from "@johnmorrisdotca/meikyuu/3d";
import { buildSolidMaze, cellsAlongDrag, createFrame, projectFrame } from "@johnmorrisdotca/meikyuu/3d";
const recipe: MazeRecipe = {shape:"square",w:5,h:5,algorithm:"backtracker",mode:"to-goal",seed:42};
const maze = buildMaze(recipe);
const grid = maze.grid;
const solidRecipe: SolidRecipe = {kind:"cube",n:2,algorithm:"backtracker",seed:42};
const solid = buildSolidMaze(solidRecipe);
const solidGrid = solid.grid;
const q: Quat = [0,0,0,1];
const frame = projectFrame(createFrame(solidGrid),solidGrid,q,1,640,480);
console.log(cellsAlongDrag(frame,solidGrid,[320,240],[330,240]));[ 17 ]What it prints (run when this page was built)