mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
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107 lines
2.5 KiB
Plaintext
107 lines
2.5 KiB
Plaintext
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#region evaluator
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function __fucnTree(symbol, l = noone, r = noone) constructor {
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self.symbol = symbol;
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self.l = l;
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self.r = r;
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isFunc = false;
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static eval = function() {
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var v1 = is_struct(l)? l.eval() : l;
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var v2 = is_struct(r)? r.eval() : r;
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switch(symbol) {
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case "+": return v1 + v2;
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case "-": return v1 - v2;
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case "*": return v1 * v2;
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case "^": return power(v1, v2);
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case "/": return v1 / v2;
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case "sin" : return sin(v1);
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case "cos" : return cos(v1);
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case "tan" : return tan(v1);
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case "abs" : return abs(v1);
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case "round" : return round(v1);
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case "ceil" : return ceil(v1);
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case "floor" : return floor(v1);
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}
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return 0;
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}
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}
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function evaluateFunctionTree(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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#endregion
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