Function createMesh

docs/app/js/sanddance-app.js:98864–98903

(bounds, resolution)

    1
]);
function createMesh(bounds, resolution) {
    if (!resolution) return createQuad(bounds);
    var maxXSpan = Math.max(Math.abs(bounds[0][0] - bounds[3][0]), Math.abs(bounds[1][0] - bounds[2][0]));
    var maxYSpan = Math.max(Math.abs(bounds[1][1] - bounds[0][1]), Math.abs(bounds[2][1] - bounds[3][1]));
    var uCount = Math.ceil(maxXSpan / resolution) + 1;
    var vCount = Math.ceil(maxYSpan / resolution) + 1;
    var vertexCount = (uCount - 1) * (vCount - 1) * 6;
    var indices = new Uint32Array(vertexCount);
    var texCoords = new Float32Array(uCount * vCount * 2);
    var positions = new Float64Array(uCount * vCount * 3);
    var vertex = 0;
    var index = 0;
    for(var u = 0; u < uCount; u++){
        var ut = u / (uCount - 1);
        for(var v = 0; v < vCount; v++){
            var vt = v / (vCount - 1);
            var p = interpolateQuad(bounds, ut, vt);
            positions[vertex * 3 + 0] = p[0];
            positions[vertex * 3 + 1] = p[1];
            positions[vertex * 3 + 2] = p[2] || 0;
            texCoords[vertex * 2 + 0] = ut;
            texCoords[vertex * 2 + 1] = 1 - vt;
            if (u > 0 && v > 0) {
                indices[index++] = vertex - vCount;
                indices[index++] = vertex - vCount - 1;
                indices[index++] = vertex - 1;
                indices[index++] = vertex - vCount;
                indices[index++] = vertex - 1;
                indices[index++] = vertex;
            }
            vertex++;
        }
    }
    return {
        vertexCount: vertexCount,
        positions: positions,
        indices: indices,
        texCoords: texCoords
    };
}
exports.default = createMesh;
function createQuad(bounds) {
    var positions = new Float64Array(12);