Pixel-Composer/scripts/draw_line_dashed/draw_line_dashed.gml
2023-03-05 13:16:44 +07:00

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function draw_line_dashed(x0, y0, x1, y1, th = 1, dash_distance = 8, dash_shift = 0) {
var dis = point_distance(x0, y0, x1, y1);
var dir = point_direction(x0, y0, x1, y1);
var part = ceil(dis / dash_distance);
var dx = lengthdir_x(1, dir);
var dy = lengthdir_y(1, dir);
var ox, oy, nx, ny, od, nd;
var rat = dash_distance / dis;
for( var i = 0; i <= part; i++ ) {
nd = dis * frac(i * rat + dash_shift / dis);
nx = x0 + dx * nd;
ny = y0 + dy * nd;
if(i && i % 2 && nd > od)
draw_line_width(ox, oy, nx, ny, th);
ox = nx;
oy = ny;
od = nd;
}
}
function draw_line_dashed_color(x0, y0, x1, y1, th, c0, c1, dash_distance = 8) {
var dis = point_distance(x0, y0, x1, y1);
var dir = point_direction(x0, y0, x1, y1);
var part = ceil(dis / dash_distance);
var dx = lengthdir_x(1, dir);
var dy = lengthdir_y(1, dir);
var ox, oy, nx, ny, oc, nc;
var dd = 0;
for( var i = 0; i <= part; i++ ) {
dd = min(dis, i * dash_distance);
nx = x0 + dx * dd;
ny = y0 + dy * dd;
nc = merge_color(c0, c1, i / part);
if(i && i % 2) {
draw_line_round_color(ox, oy, nx, ny, th, oc, nc);
}
oc = nc;
ox = nx;
oy = ny;
}
}