Reference · Surface maze rules and geometry
dragTurnfunction
The turn a drag from one point to another makes: the point of the solid under the first is carried to under the second.
Import it
import { dragTurn } from "@johnmorrisdotca/meikyuu/3d";Definition
function dragTurn(frame: SolidFrame, q: Quat, from: readonly [number, number], to: readonly [number, number]): QuatParameters
| Name | Type | Description |
|---|---|---|
frame | SolidFrame | The current projected surface-view arrays and dimensions. |
q | Quat | The current normalized rotation quaternion. |
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
Quat
The turn a drag from one point to another makes: the point of the solid under the first is carried to under the second.
Examples
import type { MazeRecipe } from "@johnmorrisdotca/meikyuu";
import { buildMaze } from "@johnmorrisdotca/meikyuu";
import type { Quat, SolidRecipe } from "@johnmorrisdotca/meikyuu/3d";
import { buildSolidMaze, createFrame, dragTurn, 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(dragTurn(frame,q,[320,240],[330,240]));[ 0, 0.022168568557680308, 0, 0.9997542470868046 ]What it prints (run when this page was built)