Pixel-Composer/scripts/draw_circle_functions/draw_circle_functions.gml
2023-09-11 16:08:58 +02:00

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function draw_circle_prec(x, y, r, border, precision = 32) {
draw_set_circle_precision(precision);
draw_circle(x, y, r, border);
}
function draw_circle_border(xx, yy, r, w) {
var step = 32;
var angle_step = 360 / step;
var px, py, _px, _py;
for(var i = 0; i <= step; i++){
var px = xx + lengthdir_x(r, i * angle_step);
var py = yy + lengthdir_y(r, i * angle_step);
if(i)
draw_line_round(_px, _py, px, py, w);
_px = px;
_py = py;
}
}
function draw_ellipse_border(x0, y0, x1, y1, w) {
var step = 32;
var angle_step = 360 / step;
var px, py, _px, _py;
var cx = (x0 + x1) / 2;
var cy = (y0 + y1) / 2;
var ww = abs(x0 - x1) / 2;
var hh = abs(y0 - y1) / 2;
for(var i = 0; i <= step; i++){
var px = cx + lengthdir_x(ww, i * angle_step);
var py = cy + lengthdir_y(hh, i * angle_step);
if(i)
draw_line_round(_px, _py, px, py, w);
_px = px;
_py = py;
}
}
function draw_circle_angle(_x, _y, _r, _angSt, _angEd, precision = 32) {
var ox, oy, nx, ny, oa, na;
draw_primitive_begin(pr_trianglelist);
for( var i = 0; i <= precision; i++ ) {
na = lerp(_angSt, _angEd, i / precision);
nx = _x + lengthdir_x(_r, na);
ny = _y + lengthdir_y(_r, na);
if(i) {
draw_vertex(_x, _y);
draw_vertex(ox, oy);
draw_vertex(nx, ny);
}
oa = na;
ox = nx;
oy = ny;
}
draw_primitive_end();
}
function draw_arc_width(_x, _y, _r, _th, _angSt, _angEd) {
draw_primitive_begin(pr_trianglelist);
var oxI, oyI, oxO, oyO;
_angSt = _angSt % 360;
_angEd = _angEd % 360;
var diff = _angEd >= _angSt? _angEd - _angSt : _angEd + 360 - _angSt;
for(var i = 0; i <= abs(diff); i += 4) {
var as = _angSt + i * sign(diff);
var nxI = _x + lengthdir_x(_r - _th / 2, as);
var nyI = _y + lengthdir_y(_r - _th / 2, as);
var nxO = _x + lengthdir_x(_r + _th / 2, as);
var nyO = _y + lengthdir_y(_r + _th / 2, as);
if(i) {
draw_vertex(oxI, oyI);
draw_vertex(oxO, oyO);
draw_vertex(nxI, nyI);
draw_vertex(oxO, oyO);
draw_vertex(nxI, nyI);
draw_vertex(nxO, nyO);
}
oxI = nxI;
oyI = nyI;
oxO = nxO;
oyO = nyO;
}
draw_primitive_end();
}