gl2d/struct/vertex.d.ts

2D graphics package for WebGL

import { Mat2d } from '../struct/mat2d';
import { PointLike } from '../struct/point';
import { Rect } from '../struct/rect';
import { Vec2Buffer, Vec2Like } from '../struct/vec2';
/**
 * Helper class for working with vertex data stored in a Float32Array.
 */
export declare class VertexBuffer extends Vec2Buffer {
    /**
     * Creates an empty VertexBuf with the specified vertex capacity.
     */
    static create(capacity: number): VertexBuffer;
    /**
     * Measures the boundaries of a subset of vertices in this buffer.
     * @param offset the offset of the first vertex in the subset.
     * @param count the number of vertices in the subset.
     */
    measureBoundaries(offset?: number, count?: number): Rect;
    /**
     * Checks if a polygon (specified by indices into this buffer) contains the specified point.
     * @param pt the point to check.
     * @param polygonIndices the indices for each of the polygons.
     */
    indexedContains(pt: PointLike, polygonIndices: number[]): boolean;
    /**
     * Checks if a polygon (specified by indices into this buffer) contains the specified point.
     * @param x the x coordinate of the point to check.
     * @param y the y coordinate of the point to check.
     * @param polygonIndices the indices for each of the polygons.
     */
    indexedContains$(x: number, y: number, polygonIndices: number[]): boolean;
    /**
     * Checks if a polygon (specified by a subset of vertices in this buffer) contains the specified point.
     * @param pt the point to check.
     * @param offset the offset of the first polygon vertex. Defaults to zero.
     * @param count the number of polygon vertices. Defaults to the number of vertices in this buffer.
     */
    contains(pt: PointLike, offset?: number, count?: number): boolean;
    /**
     * Checks if a polygon (specified by a subset of vertices in this buffer) contains the specified point.
     * @param x the x coordinate of the point to check.
     * @param y the y coordinate of the point to check.
     * @param offset the offset of the first polygon vertex. Defaults to zero.
     * @param count the number of polygon vertices. Defaults to the number of vertices in this buffer.
     */
    contains$(x: number, y: number, offset?: number, count?: number): boolean;
    /**
     * Offsets the specified vertices in this buffer by the specified vector.
     * @param offset the offset of the first vertex.
     * @param count the number of vertices to include.
     */
    offset(vec: Vec2Like, offset?: number, count?: number): void;
    /**
     * Offsets the specified vertices in this buffer by the vector (dx,dy).
     * @param offset the offset of the first vertex.
     * @param count the number of vertices to include.
     */
    offset$(dx: number, dy: number, offset?: number, count?: number): void;
    /**
     * Transforms the specified vertices in this buffer by the specified matrix.
     * @param matrix the transformation matrix.
     * @param offset the offset of the first vertex.
     * @param count the number of vertices to include.
     */
    transform(matrix: Mat2d, offset?: number, count?: number): void;
}