C++ :: Stretching Image By Dimensions
Dec 16, 2013Write a function that takes a picture and two integer values and stretching the image by dimensions.
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C++ :: Calculate Dimensions Of A Circle?
Jul 3, 2013Code:
#ifndef CIRCLE_H
#define CIRCLE_H
class Circle {
public:
//constructors
Circle();
Circle(double r);
[code]....
The function isBigger() returns true (or false) if the radius of the Circle instance on which the function is invoked is bigger (or smaller) than the radius of the Circle instance passed to the function.: How to implement this function?
C++ :: Vector Assign In Two Dimensions
Oct 29, 2013If I have a one-dimensional array of length 10, vector<int> x, and I want to assign all the elements to value 5, then I can do the following:
Code:
vector<int> x(10);
x.assign(10, 5);
(I can also do this in x's constructor, but in my scenario I want to repeatedly assign x's elements in a loop, without having to construct a new vector in memory each time.)
If I now have a two-dimensional vector, vector<vector<int> > y, and I want to assign the first vector to length 20, the second vector to length 10, and each element in the second vector to value 5, then I can do the following:
Code:
vector<vector<int> > y(20, vector<int> (10));
for (int i = 0; i < 20; i++) {
y[i].assign(10, 5);
}
But is it possible to do this without the loop? Can I make the two-dimensional assignment in just one line, in the same way that the one-dimensional assignment was made?
Perhaps it would like something like the following, which is not correct but illustrates what I mean:
Code:
y.assign(20, assign(10, 5));
Another way of doing this would be the following:
Code:
y.assign(20, vector<int> (10, 5));
But wouldn't this cause the memory in the second array to be dynamically allocated each time? I don't want to do this - I want to keep the same memory, but just assign the elements to 5.
C++ :: Simulate Random Walk In 2 Dimensions
Jan 6, 2015I am writing a piece of code that simulates a random walk in 2 dimensions (an object chooses whether to move up, down, left or right randomly). I would like the program to run the simulation for many objects at the same time. The way i have written it means that for every object i add the code becomes about 40 lines longer. Any method that would simplify the code so that i could have many objects but not pages and pages of code.
#include <ctime>
#include <cstdlib>
#include<iostream>
#include<cmath>
#include<iomanip>
#include<fstream>
using namespace std;
double dist(int a, int b);
[Code] .....
Visual C++ :: Dimensions Of JPEG In Memory?
Feb 18, 2013I have a JPEG in memory as a char* and a bytesize, if I save it to disk with a .jpg extension it's a perfect JPEG file. The thing is, I don't want to save it unless it's a minimum width/height. I got it into memory using a socket recv() call. What should I do ?
View 6 Replies View RelatedC :: Input Matrices Dimensions - Calculate Elements Of Products
Nov 14, 2013This is my code and it's not giving me the right output
Code:
#include <stdio.h>
int main() {
int dim;
int i, row, col;
// inputting matrices dimensions
int M0, M1, M2;
[Code] ....
The output should give me this:
Input 2
Correct Output 2 5 4 10
C++ :: Function To Build Multiplication Table Of Arbitrary Dimensions - Unexpected Output
Nov 8, 2013So the latest challenge from jumping into c++ is as following.
Code:
Write a function that builds the multiplication table of arbitrary dimensions This chapter also talks a ton about 2d arrays.
So I've built my program thus far as this.
Code:
#include <iostream>
using namespace std;
int drawTable(int,int);
int main()
[Code] .....
So basically, the idea is that I can use the arrays dimensions as a placeholder, and just multiple them to get that specific spot, so table[0][0] = 0, [0][1] = 0 and so on. However the output actually seems to be randomly generated numbers so I'd like to ask, what am I doing wrong? Am I on the right track? Or have I missed the bus stop completely.
C++ :: Looping Simple Menu - Calculate Dimensions Of Floor Plan In Square Feet?
Oct 2, 2013What I'm trying to accomplish is to ask the user what their floor plan is (in square feet), have them pick what kind of material they want and give them a general price.
Which is working out great so far, but I would also like to add a loop at the end that cycles back if they want to re-do the estimate with a different material selection and if not exit out the program.
I've been trying do while and if/else loops but i can't get them to work right.
#include <iostream>
#include <string>
using namespace std;
int main() {
string custName, selection;
int custNumber, floorSize, material, contactSystem;
[Code] ....
That's basically what I've come up with so far minus all the erroneous attempts. Though as is I technically complete the assignment, I would like the extra credit from making the last part loop.
C# :: Compare The Image Of A Button To Another Image In Visual Studio
Jul 3, 2014Im trying to compare the image of a button to another image in Visual Studio like so...
//variables
Image active = Image.FromFile("C:\Users\Ethan\Desktop\StarWars Status\active.png");
Image stunned = Image.FromFile("C:\Users\Ethan\Desktop\StarWars Status\stunned.png");
[Code]...
btnStatusPlr1.Image SHOULD come back as True.Then I realized it might not be the same as setting the buttons image in the properties (Which is what i did to get the original image (the one being compared to))
I do have a feeling ive done something wrong here (Yes im a noob /> )
Variable active, is the same image as the buttons default (Well should be)
C++ :: Add Padding In BMP Image
Feb 1, 2015I am working on pset4 in the CS50 online coarse. The goal is to resize a bmp image. I have it working except adding the padding back to new resized image. The image I am using uses 3 bites of padding. If the factor I resize the image by works out to have 3 bites of padding it works perfect and if the image has no padding it works perfectly I need a fresh pair of eyes. I am not sure how to add the images so here is the address to download the images and the skelton of the source code they gave to modify. [URL] .... The image that requires the padding is labled as small.bmp.
#include <stdio.h>
#include <stdlib.h>
#include "bmp.h"
int main(int argc, char* argv[]) {
// ensure proper usage
if (argc != 4)
[Code] .....
C++ :: Run Image (GIF File) Through CMD
Apr 6, 2014I would like to know if it possible to "run" an image through CMD.In other words i want that image to be opened on CMD.
BTW the image which i am more intrested is GIF files.
C++ :: Image Not Showing On Top
Jul 1, 2013I am trying to display images on top of my Background image gui, so like buttons an stuff but the problem is that there not showing ontop. I can only get one of them to show
// includes
#include <windows.h>
#include <stdio.h>
#include "res.h"
// defines
#define LWA_COLORKEY 0x00000001
#define LWA_ALPHA 0x00000002
[Code] ....
C++ :: Displaying Image From Stream
Feb 24, 2013I'm trying to display an image from a stream data. But there is no image when getting image::from stream.
It's my source code:
Code:
IStream* pstream = NULL;
if(SUCCEEDED(CreateStreamOnHGlobal(NULL, TRUE, &pstream))) {
ULONG lreal = 0;
pstream->Write(chIncomingDataBuffer, iEnd, &lreal );
[Code]...
There is no image from data.
C :: Image Rotation Without Cropping
Nov 4, 2014I am new to image processing..... and I am learning the concepts.
Recently I have done image rotation of grey scale image using the following formula:
x' = xcos(theta)-ysin(theta)
y' = xsin(theta)+ycos(theta)
The problem i have faced is image is getting cropped.
I want to rotate an image without cropping. I have searched a lot but I am not getting any algorithm based on C. How to get the algorithm for image rotation without cropping.
C :: Editing Image In PPM Format
Mar 10, 2014I'm trying to edit an image by multiplying the red component of each pixel by 10 and leaving the other components (green and blue) untouched. I'm not really sure how I'm supposed to edit the pixels one by one. I have this so far. I think there is something wrong with my ppm header as well. Is there a way to make a ppm header without specifying the bounds so that it conforms to the image you are putting in?
Code:
#include <stdlib.h>
#include <stdio.h>
#define PICTURE_FILE 1
#define MIN_ARGS 2
#define h 768
#define w 1024
void solve(FILE *in_picture, FILE *out_picture)
[Code] .....
C :: Read A 24 Bit Image Using 2D Array
Oct 29, 2013I am trying to read a 24 bit image but I'm getting errors when I'm tryting to read the pixels.
-The reading part looks bad because I'm reading both headers field by field. But I'm sure that it is reading both headers correctly.
-Right now my biggest concern is to get it to read successfully an entire bmp image
I'm using this calculation to get my padding bytes:
padding bytes = [4-(3*width)mod 4]mod 4
When I use a 2x2.bmp file to test it, I get an error that the [1][1] pixel was not read. When I use a bigger image it gives me the same error after about 100 rows and then every pixel is an error from that point on. This is what I got so far:
Code:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
const size_t cSizeofPixel = 3; //size of struct tPixel
typedef struct{
unsigned char blue;
unsigned char green;
unsigned char red;
[Code]...
I read this post Reading 24 bit BMP file into a 2d array.
I still don't know if my error is when I allocate memory to my 2d array, or if I'm doing the padding bytes wrong or if it is something else.
C :: Printing A Circle In PPM Image
Oct 30, 2013I'm supposed to print a small rectangle inside concentric circles that are inscribed in a rectangle.I'm not really sure where to start with printing a circle in a ppm file.
View 13 Replies View RelatedC :: How To Display Image With Text
Mar 27, 2013I'm pretty new to C, just looking to see how to display a image and some text to go along with it so far I can display in the image but cannot display the text at the same time.
This is my source code below
Code:
#include <stdio.h>
#include <gd.h>
int main() {
gdImagePtr gdImage = gdImageCreate( 100, 100 );
[Code]...
C :: Mirroring Image Over Y Axis
Nov 30, 2014how to do the mirror function? I have my other two working 100% but for some reason i cannot figure out how to do the mirror part. I want it to be like my flip function(lower code) where I can print the image through the for statement
Code:
int main (int argc, char *argv[]) {
// declarations here
// open input file
FILE *input;
[Code].....
C :: Reading PPM Image Into 1D Or 2D Array
Apr 4, 2013I have an assignment where I need to take an assigned image, rotate it 90 degrees to the right, flip it upside down, and turn it to grayscale; each with different outputs.
I was thinking if I can read in the image into a 2d array //array[height][width] or even just an array with the values of each pixel (r, g, b), I can just modify the array and spit it out when done.
if i can just get it into the array, I think I'll be fine. We've done similar assignments with modifying arrays for grayscale images and the other two I can probably figure out. But how am I going to read in each pixel into an array with three different values in each slot? This is my code so far:
Code:
#include<stdio.h>
C :: Resize A Bitmap Image
Aug 22, 2014I am trying to re-size a bitmap image for a class.They gave us two options to use to do the program with: an array or move the file position indicator. I want to use the file option. All the bitmap header info is checking out. The file after being re-sized should be 822 bytes but it is 1.6 KiB and the image is distorted.
Code:
#include <stdint.h>
/**
* Common Data Types
*
* The data types in this section are essentially aliases for C/C++
* primitive data types.
[Code]...
C++ :: OpenGL - Draw On Top Of Image
Jun 22, 2014This is my first time using opengl and I am experimenting with adding/drawing polygons/points/etc. on top of a PPM image. The image is already loaded when the application runs. My attempt to draw a square is from lines 30 - 35. The program runs but the square is not present. Just the image.
#include<windows.h>
#include <stdio.h>
#include <stdlib.h>
#include<Gl/gl.h>
#include<GL/glut.h>
int n;
int m;
int *image;
[Code] ....
C++ :: Convert Image To Number
May 15, 2013I want to convert image to number.
View 12 Replies View RelatedC++ :: Use 3D Array To Create Image
Sep 16, 2014My assignment is use a 3D array to create an image. Use an array of the form arr[300][200][3]. For this homework, you need to use an array of the form arr[3][400][500]. It will have 400 rows and 500 columns. You need to first initialize the array as described in class and after that write the array to a ppm image file. When viewed using Gimp, it should display USM. The letters would be 200 pixels high and 100 pixels wide each. Use at least 15 pixels for the width of the stroke. Use different colors for each letter and a different color for the background.This is what I have so far.
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
void initialize(unsigned char a[][200][3], int nrows, int ncols, int nc);
void printAll(unsigned char a[][200][3], int nrows, int ncols, int nc);
[code]....
C++ :: Embed Image With Graphic?
Apr 16, 2014How can some one embed image in C++ with graphic?
View 2 Replies View RelatedC++ :: SDL Fill Screen With Image?
Jul 19, 2013so im trying to make a background for a menu, but it is only so big. its not the kind of picture where i can just reapply it. is there a function to make it fill to the screen?
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