SOS help

Core Library Questions

igunix

in Core Library Questions • 1 year ago

Hello

I need your help.
I have a problem. Plz help..
I run and i see two video. Also i want only the light

/**
* ASCII Video
* by Ben Fry.
*
* Text characters have been used to represent images since the earliest computers.
* This sketch is a simple homage that re-interprets live video as ASCII text.
* See the keyPressed function for more options, like changing the font size.
*/
import processing.video.*;
Capture video;
boolean cheatScreen;
// All ASCII characters, sorted according to their visual density
String letterOrder =
" .`-_':,;^=+/\"|)\\<>)iv%xclrs{*}I?!][1taeo7zjLu" +
"nT#JCwfy325Fp6mqSghVd4EgXPGZbYkOA&8U$@KHDBWNMR0Q";
char[] letters;
float[] bright;
char[] chars;
PFont font;
float fontSize = 1.5;
public void setup() {
size(640, 480, P2D);
// Or run full screen, more fun! Use with Sketch -> Present
//size(screen.width, screen.height, OPENGL);
// Uses the default video input, see the reference if this causes an error
video = new Capture(this, 80, 60, 15);
int count = video.width * video.height;
font = loadFont("UniversLTStd-Light-48.vlw");
// for the 256 levels of brightness, distribute the letters across
// the an array of 256 elements to use for the lookup
letters = new char[256];
for (int i = 0; i < 256; i++) {
int index = int(map(i, 0, 256, 0, letterOrder.length()));
letters[i] = letterOrder.charAt(index);
}
// current characters for each position in the video
chars = new char[count];
// current brightness for each point
bright = new float[count];
for (int i = 0; i < count; i++) {
// set each brightness at the midpoint to start
bright[i] = 128;
}
loadPixels();
}
public void captureEvent(Capture c) {
c.read();
}
void draw() {
background(0);
pushMatrix();
float hgap = width / float(video.width);
float vgap = height / float(video.height);
scale(max(hgap, vgap) * fontSize);
textFont(font, fontSize);
int index = 0;
for (int y = 1; y < video.height; y++) {
// Move down for next line
translate(0, 1.0 / fontSize);
pushMatrix();
for (int x = 0; x < video.width; x++)
{
int loc = x + y*video.width;
float r, g, b;
r = red (video.pixels[loc]);
g = green (video.pixels[loc]);
b = blue (video.pixels[loc]);
float maxdist = 50;
float d = dist(x,y,mouseX,mouseY);
float adjustbrightness = 255* maxdist/(maxdist+d);
r += adjustbrightness;
g += adjustbrightness;
b += adjustbrightness;
r = constrain(r,0,255);
g = constrain(g,0,255);
b = constrain(b,0,255);
color c = color(r,g,b);
pixels[y*width + x] = c;
int pixelColor = video.pixels[index];
// Faster method of calculating r, g, b than red(), green(), blue()
r = (pixelColor >> 16) & 0xff;
g = (pixelColor >> 8) & 0xff;
b = pixelColor & 0xff;
// Another option would be to properly calculate brightness as luminance:
// luminance = 0.3*red + 0.59*green + 0.11*blue
// Or you could instead red + green + blue, and make the the values[] array
// 256*3 elements long instead of just 256.
float pixelBright = max(r, g, b);
// The 0.1 value is used to damp the changes so that letters flicker less
float diff = pixelBright - bright[index];
bright[index] += diff * 0.1;
fill(pixelColor);
int num = int(bright[index]);
text(letters[num], 0, 0);
// Move to the next pixel
index++;
// Move over for next character
translate(1.0 / fontSize, 0);
}
popMatrix();
}
popMatrix();
if (cheatScreen) {
//image(video, 0, height - video.height);
// set() is faster than image() when drawing untransformed images
set(0, height - video.height, video);
}
updatePixels();
}
/**
* Handle key presses:
* 'c' toggles the cheat screen that shows the original image in the corner
* 'g' grabs an image and saves the frame to a tiff image
* 'f' and 'F' increase and decrease the font size
*/
public void keyPressed() {
switch (key) {
case 'g': saveFrame(); break;
case 'c': cheatScreen = !cheatScreen; break;
case 'f': fontSize *= 1.1; break;
case 'F': fontSize *= 0.9; break;
}
}

Replies(17)

PhiLho

OK, time to point to the https://forum.processing.org/topic/where-to-place-threads-and-other-forum-practices thread...
Bad subject line, bad section (Processing Implementations).
And maybe you should give more details. What is "the light"?

igunix

Re: SOS help

1 year ago

Hello.

I have taken from examples Video --> AsciiVideo and Topics --> Image Proccessing --> Brightness.

I want from the Brightness only light and the mouse.

I managed to get the light.
Example here

import processing.video.*;
Capture video;
void setup()
{
size(400, 400, P2D);
video = new Capture(this, width, height, 30);
video.loadPixels();
loadPixels();
}
void captureEvent(Capture myCapture) {
myCapture.read();
}
void draw()
{
image(video, 0, 0);
for (int x = 0; x < video .width; x++)
{
for (int y = 0; y < video.height; y++)
{
int loc = x + y*video.width;
float r,g,b;
r = red (video.pixels[loc]);
g = green (video.pixels[loc]);
b = blue (video.pixels[loc]);
float maxdist = 50;
float d = dist(x,y,mouseX,mouseY);
float adjustbrightness = 255* maxdist/(maxdist+d);
r += adjustbrightness;
g += adjustbrightness;
b += adjustbrightness;
r = constrain(r,0,255);
g = constrain(g,0,255);
b = constrain(b,0,255);
color c = color(r,g,b);
pixels[y*width + x] = c;
}
}
}

But. My problem, when I run my code (my first topic: AsciiVideo + Brightness), I see two video: AsciiVideo and another video from the left corner.

I say, I want the light and the mouse for to put AsciiVideo.
Plz help me

igunix

Re: SOS help

1 year ago

Why not help me!!!!!!!!
why??????

PLZ

PhiLho

Re: SOS help

1 year ago

Personally, I can't help because I don't have a capture device, nor much experience with video. Beside, I still fail to understand what you try to do. But I hope somebody else can help.

Chrisir

Re: SOS help

1 year ago

I guess the video is on two places on the screen.

One video is
this line:
image(video, 0, 0);

you can switch it off with
// in front of it:
// image(video, 0, 0);

The other place is
pixels[y*width + x] = c;
here comes the light from the mouse.

But you can switch this video off:
// pixels[y*width + x] = c;

Greetings, Chrisir

igunix

Re: SOS help

1 year ago

Hello.

New code.

My problem is that I see two video. I want only the video "AsciiVideo" with the light mouse.

Chrisir look my code and I hope to understand you my problem.

/**
* ASCII Video
* by Ben Fry.
*
* Text characters have been used to represent images since the earliest computers.
* This sketch is a simple homage that re-interprets live video as ASCII text.
* See the keyPressed function for more options, like changing the font size.
*/
import processing.video.*;
Capture video;
boolean cheatScreen;
// All ASCII characters, sorted according to their visual density
String letterOrder =
" .`-_':,;^=+/\"|)\\<>)iv%xclrs{*}I?!][1taeo7zjLu" +
"nT#JCwfy325Fp6mqSghVd4EgXPGZbYkOA&8U$@KHDBWNMR0Q";
char[] letters;
float[] bright;
char[] chars;
PFont font;
float fontSize = 1.5;
public void setup() {
size(640, 480, P2D);
// Or run full screen, more fun! Use with Sketch -> Present
//size(screen.width, screen.height, OPENGL);
// Uses the default video input, see the reference if this causes an error
video = new Capture(this, 80, 60, 15);
int count = video.width * video.height;
font = loadFont("UniversLTStd-Light-48.vlw");
// for the 256 levels of brightness, distribute the letters across
// the an array of 256 elements to use for the lookup
letters = new char[256];
for (int i = 0; i < 256; i++) {
int index = int(map(i, 0, 256, 0, letterOrder.length()));
letters[i] = letterOrder.charAt(index);
}
// current characters for each position in the video
chars = new char[count];
// current brightness for each point
bright = new float[count];
for (int i = 0; i < count; i++) {
// set each brightness at the midpoint to start
bright[i] = 128;
}
video.loadPixels();
loadPixels();
}
public void captureEvent(Capture c) {
c.read();
}
void draw() {
background(0);
pushMatrix();
float hgap = width / float(video.width);
float vgap = height / float(video.height);
scale(max(hgap, vgap) * fontSize);
textFont(font, fontSize);
int index = 0;
for (int y = 1; y < video.height; y++) {
// Move down for next line
translate(0, 1.0 / fontSize);
pushMatrix();
for (int x = 0; x < video.width; x++)
{
//int loc = x + y*video.width;
float r, g, b;
/*r = red (video.pixels[0]);
g = green (video.pixels[0]);
b = blue (video.pixels[0]);*/
/*float maxdist = 50;
float d = dist(x, y, mouseX, mouseY);
float adjustbrightness = 255* maxdist/(maxdist+d);
r += adjustbrightness;
g += adjustbrightness;
b += adjustbrightness;
r = constrain(r, 0, 255);
g = constrain(g, 0, 255);
b = constrain(b, 0, 255);
color c = color(r,g,b);
pixels[y*width + x] = c;*/
int pixelColor = video.pixels[index];
// Faster method of calculating r, g, b than red(), green(), blue()
r = (pixelColor >> 16) & 0xff;
g = (pixelColor >> 8) & 0xff;
b = pixelColor & 0xff;
// Another option would be to properly calculate brightness as luminance:
// luminance = 0.3*red + 0.59*green + 0.11*blue
// Or you could instead red + green + blue, and make the the values[] array
// 256*3 elements long instead of just 256.
float maxdist = 50;
float d = dist(x, y, mouseX, mouseY);
float adjustbrightness = 255* maxdist/(maxdist+d);
r += adjustbrightness;
g += adjustbrightness;
b += adjustbrightness;
r = constrain(r, 0, 255);
g = constrain(g, 0, 255);
b = constrain(b, 0, 255);
color c = color(r,g,b);
pixels[y*width + x] = c;
float pixelBright = max(r, g, b);
// The 0.1 value is used to damp the changes so that letters flicker less
float diff = pixelBright - bright[index];
bright[index] += diff * 0.1;
fill(pixelColor);
int num = int(bright[index]);
text(letters[num], 0, 0);
// Move to the next pixel
index++;
// Move over for next character
translate(1.0 / fontSize, 0);
}
popMatrix();
}
popMatrix();
if (cheatScreen) {
//image(video, 0, height - video.height);
// set() is faster than image() when drawing untransformed images
set(0, height - video.height, video);
}
updatePixels();
}
/**
* Handle key presses:
* 'c' toggles the cheat screen that shows the original image in the corner
* 'g' grabs an image and saves the frame to a tiff image
* 'f' and 'F' increase and decrease the font size
*/
public void keyPressed() {
switch (key) {
case 'g':
saveFrame();
break;
case 'c':
cheatScreen = !cheatScreen;
break;
case 'f':
fontSize *= 1.1;
break;
case 'F':
fontSize *= 0.9;
break;
}
}

Chrisir

Re: SOS help

1 year ago

Hello,

can you delete the second video when you press c in the program?

Then
Try to make here

set(0, height - video.height, video);

this (better):

// set(0, height - video.height, video);

Greetings, Chrisir

igunix

Re: SOS help

1 year ago

Hello.

If you mean in the public void keyPressed, when i press c, I display me from the capture video.

Also, the code you gave me.

set(0, height - video.height, video);

Where shall I insert the code?

Chrisir

Re: SOS help

1 year ago

1.
yes, what happens when you press c ?

And then when you press c again?

2.
you have the line set(0, height - video.height, video); already

put // in front of it now.

igunix

Re: SOS help

1 year ago

1) when I press the c I appears below the left pane a video me

2) I have a problem again

if (cheatScreen) {
//image(video, 0, height - video.height);
// set() is faster than image() when drawing untransformed images
//set(0, height - video.height, video);
}

Chrisir

Re: SOS help

1 year ago

2.

yes, make

set(0, height - video.height, video);

and not :

Copy code

// set(0, height - video.height, video);

igunix

Re: SOS help

1 year ago

Look my friend my problem from the pictures, when i run AsciiVideo

1) http://imageshack.us/photo/my-images/528/screen0460.jpg/

2) http://imageshack.us/photo/my-images/85/screen0232.jpg/

3) http://imageshack.us/photo/my-images/259/screen0386.jpg/

But I want light mouse in AsciiVideo not new video as you saw my pictures

Aaaa

Run my code that I took in from examples at processing topics --> Images processing and Brightness

http://imageshack.us/photo/my-images/43/screen3083.jpg/

http://imageshack.us/photo/my-images/703/screen2372.jpg/

http://imageshack.us/photo/my-images/403/screen2887.jpg/

I change line 1 to 9 and line 23

import processing.video.*;
Capture video;
boolean cheatScreen;
float fontSize = 1.5;
void setup()
{
size(400, 400, P2D);
video = new Capture(this, width, height, 30);
video.loadPixels();
loadPixels();
}
void captureEvent(Capture myCapture) {
myCapture.read();
}
void draw()
{
image(video, 0, 0);
for (int x = 0; x < video .width; x++)
{
for (int y = 0; y < video.height; y++)
{
int loc = x + y*video.width;
float r,g,b;
r = red (video.pixels[loc]);
g = green (video.pixels[loc]);
b = blue (video.pixels[loc]);
float maxdist = 50;
float d = dist(x,y,mouseX,mouseY);
float adjustbrightness = 255* maxdist/(maxdist+d);
r += adjustbrightness;
g += adjustbrightness;
b += adjustbrightness;
r = constrain(r,0,255);
g = constrain(g,0,255);
b = constrain(b,0,255);
color c = color(r,g,b);
pixels[y*width + x] = c;
}
}
}
public void keyPressed() {
switch (key) {
case 'g':
saveFrame();
break;
case 'c':
cheatScreen = !cheatScreen;
break;
case 'f':
fontSize *= 1.1;
break;
case 'F':
fontSize *= 0.9;
break;
}
}

Chrisir

Re: SOS help

1 year ago

see Line

image(video, 0, 0);

make it

// image(video, 0, 0);

I am still not sure what you want.

igunix

Re: SOS help

1 year ago

I want in code AsciiVideo to put light mouse.

When I write the code for light mouse.After i run my program and i see two video. Look the pictures.

1) http://imageshack.us/photo/my-images/528/screen0460.jpg/

2) http://imageshack.us/photo/my-images/85/screen0232.jpg/

3) http://imageshack.us/photo/my-images/259/screen0386.jpg/

/**
* ASCII Video
* by Ben Fry.
*
* Text characters have been used to represent images since the earliest computers.
* This sketch is a simple homage that re-interprets live video as ASCII text.
* See the keyPressed function for more options, like changing the font size.
*/
import processing.video.*;
Capture video;
boolean cheatScreen;
// All ASCII characters, sorted according to their visual density
String letterOrder =
" .`-_':,;^=+/"|)<>)iv%xclrs{*}I?!][1taeo7zjLu" +
"nT#JCwfy325Fp6mqSghVd4EgXPGZbYkOA&8U$@KHDBWNMR0Q";
char[] letters;
float[] bright;
char[] chars;
PFont font;
float fontSize = 1.5;
public void setup() {
size(640, 480, P2D);
// Or run full screen, more fun! Use with Sketch -> Present
//size(screen.width, screen.height, OPENGL);
// Uses the default video input, see the reference if this causes an error
video = new Capture(this, 80, 60, 15);
int count = video.width * video.height;
font = loadFont("UniversLTStd-Light-48.vlw");
// for the 256 levels of brightness, distribute the letters across
// the an array of 256 elements to use for the lookup
letters = new char[256];
for (int i = 0; i < 256; i++) {
int index = int(map(i, 0, 256, 0, letterOrder.length()));
letters[i] = letterOrder.charAt(index);
}
// current characters for each position in the video
chars = new char[count];
// current brightness for each point
bright = new float[count];
for (int i = 0; i < count; i++) {
// set each brightness at the midpoint to start
bright[i] = 128;
}
video.loadPixels();
loadPixels();
}
public void captureEvent(Capture c) {
c.read();
}
void draw() {
background(0);
pushMatrix();
float hgap = width / float(video.width);
float vgap = height / float(video.height);
scale(max(hgap, vgap) * fontSize);
textFont(font, fontSize);
int index = 0;
for (int y = 1; y < video.height; y++) {
// Move down for next line
translate(0, 1.0 / fontSize);
pushMatrix();
for (int x = 0; x < video.width; x++)
{
float r, g, b;
int pixelColor = video.pixels[index];
// Faster method of calculating r, g, b than red(), green(), blue()
r = (pixelColor >> 16) & 0xff;
g = (pixelColor >> 8) & 0xff;
b = pixelColor & 0xff;
// Another option would be to properly calculate brightness as luminance:
// luminance = 0.3*red + 0.59*green + 0.11*blue
// Or you could instead red + green + blue, and make the the values[] array
// 256*3 elements long instead of just 256.
float maxdist = 50;
float d = dist(x, y, mouseX, mouseY);
float adjustbrightness = 255* maxdist/(maxdist+d);
r += adjustbrightness;
g += adjustbrightness;
b += adjustbrightness;
r = constrain(r, 0, 255);
g = constrain(g, 0, 255);
b = constrain(b, 0, 255);
color c = color(r,g,b);
pixels[y*width + x] = c;
float pixelBright = max(r, g, b);
// The 0.1 value is used to damp the changes so that letters flicker less
float diff = pixelBright - bright[index];
bright[index] += diff * 0.1;
fill(pixelColor);
int num = int(bright[index]);
text(letters[num], 0, 0);
// Move to the next pixel
index++;
// Move over for next character
translate(1.0 / fontSize, 0);
}
popMatrix();
}
popMatrix();
if (cheatScreen) {
//image(video, 0, height - video.height);
// set() is faster than image() when drawing untransformed images
set(0, height - video.height, video);
}
updatePixels();
}
/**
* Handle key presses:
* 'c' toggles the cheat screen that shows the original image in the corner
* 'g' grabs an image and saves the frame to a tiff image
* 'f' and 'F' increase and decrease the font size
*/
public void keyPressed() {
switch (key) {
case 'g':
saveFrame();
break;
case 'c':
cheatScreen = !cheatScreen;
break;
case 'f':
fontSize *= 1.1;
break;
case 'F':
fontSize *= 0.9;
break;
}
}

I don't want the video that it's over the left corner.
Where is the problem? I want light mouse only in AsciiVideo

Chrisir

Re: SOS help

1 year ago

yeah... I don't know enough about video.

does key c kill the video in the upper left corner?
Goes it on and off?

then

have

cheatScreen = false;

in setup()

did you set

pixels[y*width + x] = c;

// pixels[y*width + x] = c;

as I told you?

Chrisir

igunix

Re: SOS help

1 year ago

Chrisir I find my problem in AsciiVideo. It's line 57 and line 114 but I don' know what to do in these.

Chrisir

Re: SOS help

1 year ago

i don't know

put // in front of them?

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