Pixel-Composer/scripts/gradients_function/gradients_function.gml
2022-11-14 09:16:15 +07:00

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enum GRADIENT_INTER {
smooth,
none,
hue
}
function draw_gradient(_x, _y, _w, _h, _grad, _int = GRADIENT_INTER.smooth) {
static RES = 48;
var _step = _w / RES;
var _ox, _oc;
var uniform_grad_blend = shader_get_uniform(sh_gradient_display, "gradient_blend");
var uniform_grad = shader_get_uniform(sh_gradient_display, "gradient_color");
var uniform_grad_time = shader_get_uniform(sh_gradient_display, "gradient_time");
var uniform_grad_key = shader_get_uniform(sh_gradient_display, "gradient_keys");
var _grad_color = [];
var _grad_time = [];
for(var i = 0; i < ds_list_size(_grad); i++) {
_grad_color[i * 4 + 0] = color_get_red(_grad[| i].value) / 255;
_grad_color[i * 4 + 1] = color_get_green(_grad[| i].value) / 255;
_grad_color[i * 4 + 2] = color_get_blue(_grad[| i].value) / 255;
_grad_color[i * 4 + 3] = 1;
_grad_time[i] = _grad[| i].time;
}
if(ds_list_empty(_grad)) {
draw_sprite_stretched(s_fx_pixel, 0, _x, _y, _w, _h)
} else {
shader_set(sh_gradient_display);
shader_set_uniform_i(uniform_grad_blend, _int);
shader_set_uniform_f_array(uniform_grad, _grad_color);
shader_set_uniform_f_array(uniform_grad_time, _grad_time);
shader_set_uniform_i(uniform_grad_key, ds_list_size(_grad));
draw_sprite_stretched(s_fx_pixel, 0, _x, _y, _w, _h)
shader_reset();
}
}
function gradient_eval(_gradient, _time, _int = GRADIENT_INTER.smooth) {
if(ds_list_size(_gradient) == 0) return c_white;
if(ds_list_size(_gradient) == 1) return _gradient[| 0].value;
for(var i = 0; i < ds_list_size(_gradient); i++) {
var _key = _gradient[| i];
if(_key.time >= _time) {
if(i == 0)
return _gradient[| 0].value;
else {
var c0 = _gradient[| i - 1].value;
if(_int == GRADIENT_INTER.smooth) {
var rat = (_time - _gradient[| i - 1].time) / (_gradient[| i].time - _gradient[| i - 1].time);
var c1 = _gradient[| i].value;
return merge_color(c0, c1, rat);
} else if(_int == GRADIENT_INTER.none) {
return c0;
}
}
}
}
return _gradient[| ds_list_size(_gradient) - 1].value;
}
function gradient_add(_gradient, _addkey, _deleteDup) {
if(ds_list_size(_gradient) == 0) {
ds_list_add(_gradient, _addkey);
return;
}
for(var i = 0; i < ds_list_size(_gradient); i++) {
var _key = _gradient[| i];
if(_key.time == _addkey.time) {
if(_deleteDup)
_key.value = _addkey.value;
return;
} else if(_key.time > _addkey.time) {
ds_list_insert(_gradient, i, _addkey);
return;
}
}
ds_list_add(_gradient, _addkey);
}