invalid memory acces on pushStyle

clankill3r

invalid memory acces on pushStyle

in Contributed Library Questions • 1 year ago

I tried to isolate the problem in a small sketch but then there is no problem anymore.

Anyway, in the bigger sketch it always prints a (line 28) and then i get invalid memory acces so it never prints b (line 30).

However, if i remove pushStyle() and PopStyle() then the problem is gone.

Does anyone have a idea how this is possible?

import controlP5.*;
import javax.swing.JColorChooser;
import java.awt.Color;
ControlP5 cp5;
color c = color(255, 255, 255);
Color javaColor;
void setup() {
colorMode(HSB, 360, 100, 100, 100);
gui();
}
void draw() {
fill(c);
ellipse(width/2, height/2, width/2, height/2);
}
void color1() {
javaColor = JColorChooser.showDialog(this, "Java Color Chooser", Color.white);
if (javaColor!=null) {
pushStyle();
colorMode(RGB, 255, 255, 255);
c = color(javaColor.getRed(), javaColor.getGreen(), javaColor.getBlue());
println("a");
popStyle();
println("b");
}
}
void gui() {
cp5 = new ControlP5(this);
ControlWindow controlWindow;
controlWindow = cp5.addControlWindow("controlP5window", 100, 100, 400, 600);
cp5.addButton("color1")
.setWindow(controlWindow)
;
}

Replies(7)

clankill3r

Re: invalid memory acces on pushStyle

1 year ago

And for who ever strands here with the same problem, this is my work around for now were i do a manual push and pop.

color colorPicker() {
color c = color(0);
Color javaColor = JColorChooser.showDialog(this, "Color 1", Color.white);
if (javaColor != null) {
// to avoid invalid memory acces with popStyle() let's
// do a popStyle() by hand
int cMode = g.colorMode;
float cX = g.colorModeX;
float cY = g.colorModeY;
float cZ = g.colorModeZ;
float cA = g.colorModeA;
colorMode(RGB, 255, 255, 255);
c = color(javaColor.getRed(), javaColor.getGreen(), javaColor.getBlue());
// restore
colorMode(cMode, cX, cY, cZ, cA);
}
return c;
}

quarks

Re: invalid memory acces on pushStyle

1 year ago

I tried the original code above without getting any error and both a and b were displayed????

clankill3r

Re: invalid memory acces on pushStyle

1 year ago

I tried to isolate the problem in a small sketch but then there is no problem anymore.

I wish i could recreate the problem. And i can't pass the whole project here.

quarks

Re: invalid memory acces on pushStyle

1 year ago

The only problem I ever had with pushStyle and popStyle is when they were mismatched i.e.executing too many of one and not enough of the other. They work in pairs like {} and pushMatrix / popMatrix

clankill3r

Re: invalid memory acces on pushStyle

1 year ago

I had this annoying problem again.

Tried to isolate it again, and then it's gone again :(

I dump it here anyway.

I think it has to do with Thread. That processing is in a stage where pushStyle is not allowed or already in the next frame or something.

Foo foo;
void setup() {
foo = new Foo(this, 100);
foo.start();
}
void draw() {
PImage img = get(0, 0, width, height);
}
class Foo extends Thread {
boolean running = false;
int interval;
Test test;
Foo(PApplet p, int interval) {
test = new Test(p);
this.interval = interval;
}
public void start() {
running = true;
super.start();
}
public void run() {
while (running) {
PImage img = loadImage("smile.jpeg");
color c = test.getColor(img);
println(c);
try {
sleep((long) (interval));
}
catch (Exception e) {
e.printStackTrace();
}
}
}
}
class Test {
PApplet p;
Test(PApplet p) {
this.p = p;
}
int getColor(PImage img) {
System.out.println("getColor img null: "+(img == null));
System.out.println("p null: "+(p == null));
System.out.println("a");
pushStyle();
colorMode(PApplet.RGB, 255, 255, 255);
System.out.println("b");
int r = 0;
int g = 0;
int b = 0;
int a = 0;
int c;
for (int i = 0; i < img.pixels.length; i++) {
c = img.pixels[i];
r += (c >> 16) & 0xFF;
g += (c >> 8) & 0xFF;
b += c & 0xFF;
a += (c >> 24) & 0xFF;
}
System.out.println("c");
r = r / img.pixels.length;
g = g / img.pixels.length;
b = b / img.pixels.length;
a = a / img.pixels.length;
System.out.println("d");
c = color(r, g, b, a);
System.out.println("e");
popStyle();
System.out.println("f");
return c;
}
}

rbrauer

Re: invalid memory acces on pushStyle

1 year ago

Did you try any higher intervals? As it is, its trying to load the image and go through all the pixels ten times per second. The problem might not have anything to do with pushStyle().

clankill3r

Re: invalid memory acces on pushStyle

1 year ago

i tried a few intervals.

Then fixed it with storing:

int cMode = g.colorMode;
float cX = g.colorModeX;
float cY = g.colorModeY;
float cZ = g.colorModeZ;
float cA = g.colorModeA;

changing the colormode and restore it with:

colorMode(cMode, cX, cY, cZ, cA);

After i fixed that it was ok but i got a memmory error else where...

And yes, a popStyle again.

And i was able to fix it again with the code above.

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