Processing Error The Constructor Is Undefined
Tool DevelopmentEvents and OpportunitiesGeneral Discussion Sub forum : Move this topic Cancel Programming Questions eesal Class Name returns "The constructor ___ is undefined" error in Programming Questions • 2 months ago Hi, I think there is a bug in the class' naming. I'm a newbie to Processing ands was experimenting with classes, so I created this code that draws a simple title bar. It works like this, but the class and constructor were originally named "TitleBar" and it didn't work. The error was "The constructor 'TitleBar' is undefined" I reviewed my code with the Objects tutorial in this page and the only differencfe was the class name. Is there a reason for the code not working with TitleBar as a name? Bar Title; void setup() { size(400, 400); background(0,0,0); Title = new Bar(color(255,255,255),100); Title.Draw(); } class Bar { //Data: Declare variables used in Methods color BarColor; int TabWide; int Tall; //Constructor: Variables used in class Bar(color tBarColor, int tTabWide) { BarColor = tBarColor; TabWide = tTabWide; Tall = 20; } //Methods void Draw() { // Shape borders and filling noStroke(); fill(BarColor); // Rectangle: rect(x1,y2,width,height) rectMode(CORNER); rect(0,0,width,Tall); // Quadrilateral: quad(x1,y1, x2,y2, x3,y3, x4,y4) quad(Tall,Tall, Tall+TabWide,Tall, TabWide,2*Tall, 2*Tall,2*Tall); } } 1 Replies(4) GoToLoop Re: Class Name returns "The constructor ___ is undefined" error 2 months ago Just pasted and copied here and worked alright w/o any modifications! Leave a comment on GoToLoop's reply Rodrigo S.. Re: Class Name returns "The constructor ___ is undefined" error 2 months ago I got no bugs. Runs smoothly. What do you want to name TitleBar? the class? or the instance? Leave a comment on Rodrigo Shiordia's reply PhiLho Re: Class Name returns "The constructor ___ is undefined" error 2 months ago See if the ex
Tool DevelopmentEvents and OpportunitiesGeneral Discussion Sub forum : Move this topic Cancel Contributed Library Questions Eduardo__ Error: The constructor xxx is undefined in Contributed Library Questions • 1 year ago Hi there. I´m a newbie in processing. I´m trying to make a class for driving many gifs animation. For animiation I use the "Gif" library. I download this library in processing website. It´s intended for animate gif files. But I need to display each frame of animation. Because of that, I´m creaing this class. When I try to compile and https://forum.processing.org/topic/class-name-returns-the-constructor-is-undefined-error run the project, I give the folowing error: "The constructor Gif(Stiling.anim, String) in undefined" (this error respects to yelow line at code. see below) class anim { //Plays gif animation import gifAnimation.*; float px,py,len,frame=0; Gif nonLoopingGif;// void load_gif(float x, float y) { void anim(float x, float y) { px=x; py=y; nonLoopingGif = new Gif(this, "ink splash2.gif"); len=nonLoopingGif.length; nonLoopingGif.play(); https://forum.processing.org/topic/error-the-constructor-xxx-is-undefined nonLoopingGif.ignoreRepeat(); } void play_gif() { //create anitated image and animate it. Then, it destroys itself from memory if (frame here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of http://stackoverflow.com/questions/16497884/getting-a-constructor-error-in-processing this site About Us Learn more about Stack Overflow the company Business http://stackoverflow.com/questions/27146211/the-constructor-is-undefined-in-processing Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign processing error up Getting a constructor error in processing up vote 0 down vote favorite I'm playing with processing from some days, but I encountered an error that i didn't understand. I declared the class and the constructor with the proper arguments, maybe you can help me. This is the code: Cell[][] grid; int rnc = 5; int side = 5; void setup(){ size(rnc*side,rnc*side); grid processing error the = new Cell[rnc][rnc]; for(int i = 0; i < rnc; i++){ for(int j = 0; j < rnc; j++){ grid[i][j] = new Cell(i,j); rect(grid[i][j].row*side,grid[i][j].column*side,side,side); } } } void draw(){} class Cell { boolean isChecked; int row,column; int side; void Cell(int trow, int tcolumn){ row=trow; column=tcolumn; } void toggleCheck(){ if(isChecked == true){ isChecked = false; }else{ isChecked = true; } } } The error I got after i tried to ran the program is : The constructor sketch.Cell(int,int) is undefined. Thank you in advance. constructor undefined processing share|improve this question asked May 11 '13 at 14:04 k1ps 516 Which language is this? C#? Java? –Alexey May 11 '13 at 14:28 It's processing.org, which is based on Java –datguy May 16 '13 at 3:29 add a comment| 1 Answer 1 active oldest votes up vote 0 down vote I'm assuming this is Java, although you haven't specified a language. If so, this is the problem: void Cell(int trow, int tcolumn){ row=trow; column=tcolumn; } That's not a constructor. That's a method called Cell, with a void return type. You meant: Cell(int trow, int tcolumn){ row= here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up The constructor __is undefined in Processing up vote -5 down vote favorite Shape[] shapes = new Shape[1000]; int totalShapes=0; void setup() { size(800,800); smooth(); for (int i = 0; i < shapes.length; i++ ) { int r = int(random(2)); if (r == 0) { shapes[i] = new Circle(random(width),-1,random(30,80),color(243,240,245),random(0.001,0.5)); } else { shapes[i] = new Square(random(width),-1,random(20,70),color(255,240,245),random(0.01,1));}}} void draw() { background(255); shapes[totalShapes]=new Shape(); totalShapes++; if (totalShapes>=shapes.length){ totalShapes=0;} for (int i = 0; i < totalShapes; i++ ) { shapes[i].fall(); shapes[i].display();} class Circle extends Shape { Circle(float x_, int y_, float r_,int c_,float speed_) { super(x_,y_,r_,c_,speed_); } void fall() { super.fall(); x+=random(0.001,0.5); r += random(0.001,0.5); r = constrain(r,0,100);} void display() { ellipseMode(CENTER); fill(c); noStroke(); ellipse(x,y,r,r);}} class Shape { float x; int y; float r; int c; float speed; Shape(float x_, int y_, float r_,int c_,float speed_) { //The constructor Shape()is undefined x =x_; y =y_; r =r_; c= c_;} void fall() { y +=speed;} void display() { }} class Square extends Shape { Square(float x_, int y_, float r_,int c_,float speed_) { super(x_,y_,r_,c_,speed_); } void fall() { super.fall();} void display() { rectMode(CENTER); fill(c); noStroke(); rect(x,y,