mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-11-14 06:23:55 +01:00
128 lines
3.5 KiB
Plaintext
128 lines
3.5 KiB
Plaintext
#region evaluator
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global.EQUATION_PRES = ds_map_create();
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global.EQUATION_PRES[? "+"] = 1;
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global.EQUATION_PRES[? "-"] = 1;
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global.EQUATION_PRES[? "*"] = 2;
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global.EQUATION_PRES[? "/"] = 2;
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global.EQUATION_PRES[? "^"] = 3;
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global.EQUATION_PRES[? "sin"] = 5;
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global.EQUATION_PRES[? "cos"] = 5;
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global.EQUATION_PRES[? "tan"] = 5;
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global.EQUATION_PRES[? "abs"] = 5;
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global.EQUATION_PRES[? "round"] = 5;
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global.EQUATION_PRES[? "ceil"] = 5;
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global.EQUATION_PRES[? "floor"] = 5;
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function evaluateFunction(fx, params = {}) {
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var pres = global.EQUATION_PRES;
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var vl = ds_stack_create();
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var op = ds_stack_create();
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fx = string_replace_all(fx, " ", "");
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fx = string_replace_all(fx, "\n", "");
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var len = string_length(fx);
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var l = 1;
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var ch, cch;
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while(l <= len) {
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ch = string_char_at(fx, l);
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if(ds_map_exists(pres, ch)) {
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if(ds_stack_empty(op)) ds_stack_push(op, ch);
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else {
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if(pres[? ch] > pres[? ds_stack_top(op)] || ds_stack_top(op) == "(") ds_stack_push(op, ch);
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else {
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while(pres[? ch] <= pres[? ds_stack_top(op)] && !ds_stack_empty(op)) {
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ds_stack_push(vl, evalToken(ds_stack_pop(op), vl));
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}
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ds_stack_push(op, ch);
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}
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}
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l++;
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} else if (ch == "(") {
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ds_stack_push(op, ch);
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l++;
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} else if (ch == ")") {
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while(ds_stack_top(op) != "(" && !ds_stack_empty(op)) {
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ds_stack_push(vl, evalToken(ds_stack_pop(op), vl));
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}
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ds_stack_pop(op);
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l++;
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} else {
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var vsl = "";
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while(l <= len) {
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cch = string_char_at(fx, l);
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if(ds_map_exists(pres, cch) || cch == ")" || cch == "(") break;
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vsl += cch;
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l++;
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}
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if(vsl == "") continue;
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if(ds_map_exists(pres, vsl)) {
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ds_stack_push(op, vsl);
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} else {
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switch(vsl) {
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case "e": ds_stack_push(vl, 2.71828); break;
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case "pi": ds_stack_push(vl, pi); break;
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default :
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if(variable_struct_exists(params, vsl))
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ds_stack_push(vl, variable_struct_get(params, vsl));
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else
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ds_stack_push(vl, toNumber(vsl));
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break;
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}
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}
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}
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}
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while(!ds_stack_empty(op)) {
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ds_stack_push(vl, evalToken(ds_stack_pop(op), vl));
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}
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ds_stack_destroy(op);
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return ds_stack_empty(vl)? 0 : ds_stack_pop(vl);
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}
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function evalToken(operator, vl) {
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if(ds_stack_empty(vl)) return 0;
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switch(operator) {
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case "+":
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if(ds_stack_size(vl) >= 2)
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return ds_stack_pop(vl) + ds_stack_pop(vl);
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case "-":
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if(ds_stack_size(vl) >= 2)
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return -ds_stack_pop(vl) + ds_stack_pop(vl);
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else
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return -ds_stack_pop(vl);
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case "*":
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if(ds_stack_size(vl) >= 2)
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return ds_stack_pop(vl) * ds_stack_pop(vl);
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case "^":
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if(ds_stack_size(vl) < 2) return 1;
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var ex = ds_stack_pop(vl);
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var bs = ds_stack_pop(vl);
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return power(bs, ex);
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case "/":
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if(ds_stack_size(vl) < 2) return 0;
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var _d = ds_stack_pop(vl);
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if(_d == 0) return 0;
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return ds_stack_pop(vl) / _d;
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case "sin" : if(ds_stack_size(vl) >= 1) return sin(ds_stack_pop(vl));
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case "cos" : if(ds_stack_size(vl) >= 1) return cos(ds_stack_pop(vl));
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case "tan" : if(ds_stack_size(vl) >= 1) return tan(ds_stack_pop(vl));
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case "abs" : if(ds_stack_size(vl) >= 1) return abs(ds_stack_pop(vl));
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case "round" : if(ds_stack_size(vl) >= 1) return round(ds_stack_pop(vl));
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case "ceil" : if(ds_stack_size(vl) >= 1) return ceil(ds_stack_pop(vl));
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case "floor" : if(ds_stack_size(vl) >= 1) return floor(ds_stack_pop(vl));
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}
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return 0;
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}
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#endregion |