C++ :: Creating Script That Can Rotate Image Through Some Number Of Degrees
Dec 3, 2014
Create a script that lets you rotate an image through some number of degrees(out of a maximum of 360 degrees). The script should let you specify that you want to spin the image continuously. It should let you adjust the spin speed dynamically.
<!DOCTYPE html>
<html>
<head>
<meta charset = "utf-8">
<title>Final</title>
</head>
<body>
<canvas id = "drawRectangle" width = "200" height = "200"
style = "border: 5px solid black;">
</canvas>
[code]....
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Mar 9, 2015
I need to write a program to input 6 temperatures in degrees Fahrenheit and output it in degrees Celsius. I used a for loop but it keeps giving me 0 as the output whenever I enter a temperature...
Code:
#include <stdio.h>
#include <math.h>
int main() {
double farenheit,celsius;
for(int i=0; i<6; i++) {
printf("Enter temperature in degrees farenheit: ");
scanf("%lf",&farenheit);
celsius = (5/9)*(farenheit-32);
printf("Temperature in degrees celsius: %lf ",celsius);
} }
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Mar 12, 2013
I'm trying to create a PPM image for a class assignment. A black rectangle with a circle at the point 225, 175 with a radius of 75. I have to use certain specific methods, so I can't use like Bresenham's really famous method for creating a circle.
The problem is that it compiles fine, and transfers to an image fine, but always says that I have a negative or zero image size.
Code:
#include "shapes.h"
int main () {
int i, j, x, y;
fprintf(stdout,"P6 width height 255
");
[Code] ....
And my header is:
Code:
#include <stdio.h>#include <math.h>
#define height 480
#define width 640
#define cy 175
#define cx 225
#define radius 75
The circle has to be filled in. I made it white. Also, i and j are unsused so far, so just ignore them.
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Nov 1, 2013
My below code is createing databases(database here is a kd tree) and indexing one image per database. I have two classes LastDatabaseTndexingPolicy and another forwardingDatabaseaccessor.cpp .
I am calling the GetDatabaseToAccess() function from forwardingDatabaseAccessor.cpp class .GetDatabaseToAccess() function is present in LastDatabaseTndexingPolicy class and it returns the database created as a pointer and using that database pointer we call another function which actually indexes the image to the database .
Now my issue is i am not able to have multiple threads act on the following functions as DatabaseAccessor_ptr db which is in the following file is coupled with two functions and however i put locks in the LastDatabaseTndexingPolicy file as below i end up getting synchronization issue ..........
Hence now i am using a single lock in forwardingDatabaseAccessor.cpp and serializing the code,. How can i change my design to parallelize this code .........
In ForwardingDatabaseAccessor.cpp we are calling function from LastDatabaseTndexingPolicy as shown below:-
DatabaseAccessor_ptr db is something which needs to be synchroinized. I tried createing 256 databases with one image each and when i run this code i ended up creating 175 databses and though i was restricting in code with locks that every database has only one image i ended up having two images in single database ..... ideally i had to get only one image per database but i got two images in few of them hence instead of 256 database this code created 175 or so databases.
indexing::IndexReturnValue ForwardDatabaseAccessor::index(cv::Mat image,
const std::string& imageName, features::Camera::Type indexCameraType,
features::Camera::Type recogCameraType) {
DatabaseAccessor_ptr db = this->IndexingPolicy_ptr->GetDBToIndex();
[Code] .....
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Jul 25, 2012
input: array[] = {0,1,2,3,4};
output should be {3,4,0,1,2};
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Apr 25, 2012
I developed this simple sample program to test cos():
Code:
#include <cmath>
#include <iostream>
using namespace std;
int main() {
const float radiansToDegrees = 180.0f / 3.141592653589793f;
float c = sqrt(2.0f);
float a = 1;
float angleRadians = cos(a/c);
float angle = radiansToDegrees*angleRadians;
}
I expected angle to be 45 exactly, but it's value is: angle = 43.558804
Why is the angle not 45 degrees? What did I do wrong?
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May 15, 2013
I want to convert image to number.
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Feb 17, 2013
I'm trying to find angles A,B,C using law of cosines and I want the answers to be in degrees and the formula to convert the answer to degrees is angle*PI/180. However the answer does not convert to degrees what am I doing wrong?
Code:
#include "stdafx.h"
#include <iostream>
#include <iomanip>
#include <cmath>
#define PI 3.14
using namespace std;
[Code].....
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Oct 10, 2013
Is there a way to make an object rotate until it looks at the sprite?
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May 23, 2013
I have the following code for a treap but I don't know how to make roate_left and rotate_right functions to balance it.
Code:
#include<iostream>
#include<utility>
#include<stdlib.h>
#include<time.h>
#include<stdio.h>
using namespace std;
template<typename T> class Treap{
[Code] ....
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Nov 18, 2014
I'm saving the images in folder by using:
webClient.DownloadFile(href, sourcepath);
I don't want to give name as Current date and time..shown in given below code
string sub = @"Gadhada";
DirectoryInfo subFolder = dir1.CreateSubdirectory(sub);
Imagename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() +
[Code].....
I want to save my imagename as 1.jpg, 2.jpg, 3.jpg.
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Jun 20, 2014
I would like to understand how to rotate a 3D Object around it's Center, by modifying it's Vertex Coordinates. N
The reason is that I need to keep track of the new coordinates because of my collision system, which is based on Vertex Coords.
Here is the Code for an Object
void DrawHouse(GLfloat x1, GLfloat x2, GLfloat y1, GLfloat y2,
GLfloat z1,GLfloat z2, GLfloat u1, GLfloat u2, GLfloat v1, GLfloat v2, GLuint textid) {
glBindTexture(GL_TEXTURE_2D, textid);
glBegin(GL_TRIANGLES);
glNormal3f( 0.0f, 0.0f, 1.0f);
glTexCoord2f(u1,v1); glVertex3f(x1,y1,z2);
[code]....
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Nov 30, 2014
Are there STD functions for converting degrees to radians and radians to degrees?
I know I can write my own but in the particular application I would like to use built-in ones for maintainability.
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Feb 28, 2015
When reading a PPM Image file, how would I find the magic number and the max color value?
int main() {
string imageFileName;
ifstream image;
imageFileName = "C:UsersDesktopdrink.ppm";
image.open(imageFileName.c_str(), ifstream::binary);
[Code] ....
The code gives me seemingly logical integer values for size, width and height. But how would I find the max color value and so called "magic number" for this PPM image file?
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Jan 21, 2015
I have a function that rotates a vector 90 degrees. Only problem is, i never get negative values. For some strange reason, no matter what i do, the value of x is positive. And even if the x is negative. Once i put it into direction (struct with 2 values x and y) it turns again to positive. Im using VSC++2013 ultimate. At first direction was SDL_Point, so i thought it was SDL problem, but now it seems its something else.
if (c == '-') {
int x = direction.y;
x *= -1;
int y = direction.x;
direction = { x, y };
}
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Feb 19, 2015
When i click the back button, I like to skip some old pages & rotate pages view in my property sheet.
I have 5 pages, when i clicked the User button in my MainDlg the below function called like,
User Button Clicked -> Page1 Opened
Next Button Clicked
-> Page2 -> Page3 -> Page4 -> Page5
Back Button Clicked
Page1 <- Page2 <- Page3 <- Page4 <- Page5
This work done. working good.
Code:
void MainDlg:: onButtonUserClicked()
{
CSheet oSht(this);
Page1 p1;
[Code]...
My requirement is,
User Button Clicked -> Page1 Opened
Next Button Clicked
-> Page2 -> Page3 -> Page4-> Page5 -> Page1(Again called 1st page automatically - rotate pages view)
Back Button Clicked(Cur Page loc is Page5)
(Start the prev Process)Page5 <- Page1 <- (Skip the Page2 & 3)Page4 <- Page5
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Mar 5, 2014
How would I go about creating a random number generator (or pseduorandom I suppose) with user inputted lower and upper bounds along with a user inputted size of the sequence (so they can select how many random numbers they'd like outputted)?
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Jul 13, 2014
I am creating a random number generator and have run into a problem with my do while loop. it continually prints one of the lines of output infinitely. what am i missing here?
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main() {
unsigned seed = time(0);
[code]...
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Feb 26, 2015
1 create a struct called complex which reprensts a complex number . both the real and imaginary compoents should be represented as doubles . ( 1 marks) .
2 write down a function called magnitude which has one parameter ( a struc complex) and a return type of double . it should return the maginude of the given parameter . ( 3marks) .
3 write a function called find_largest which has two parameter (one of type struct complex const * and the other type int) and a return type of struc complex . the two parameter represent an array of complex numbers and number of elements in that array . the function should return elements from array which has largest magnitude . this fucntion must called the magnitude function . ( 5 marks)
4 write a main function . your main fucntion . Your main fucntion should repeately prompt the user for complex number , storing them in an array. you should continuing reading in complex number until the user enters in both componets , at this point you should stop . you should not make an assumptions how many complex number the user will enter , ( i.e use realloc) after reading in complex numbers from the user you should print out real and imaginary components of the complex number with the largest magnitude.
Code:
#include<stdio.h>
struct complex {
double real;
double imag;
[code]....
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May 6, 2014
i need to creat a program in la user give me "X" number and creat the textbox and y need sum all textbox
int t = Int32.Parse(txtbano.Text);
for (int i = 0; i < t; i++)
{
[Code]....
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Aug 9, 2012
I'm trying to create a program that creates random numbers. I looked through some examples and this is what I came up with. The time identifier seems to be undefined yet I see no reason it is undefined.
Code:
#include "stdafx.h"
#include <iostream>
using namespace std;
int main() {
//Re-seed the random-number generator
time_t now;
[code]...
here's my error code..
1>------ Build started: Project: bake, Configuration: Debug Win32 ------
1> bake.cpp
1>c:usersjonbecherdocumentsvisual studio 2012projectsakeakeake.cpp(8): error C3861: 'time': identifier not found
1>c:usersjonbecherdocumentsvisual studio 2012projectsakeakeake.cpp(9): warning C4244: 'argument' : conversion from 'time_t' to 'unsigned int', possible loss of data
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
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Apr 9, 2013
I am trying to create a recursive function that i can call on in order to take a user inputed base and exponent and give final answer this is what i have but im completely lost after this i dont even know how to continue. What i have so far
#include <iostream>
using namespace std;
int Exp(int x,int y){
if(base <= 1 || exp == 0) return 1;
if(exp == 1) return base;
int main(){
int number, exp;
[Code] .....
After i set the base situations im not sure how to get the function to make the function take the base to the exponent recursively.
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Sep 18, 2012
I am working on an assignment to create a Complex number calculator. In this assignment I am to ask the user for input to the calculator. We are given a sample run output that looks like this.
Enter operand1: 3 4
operand1: (3, 4)
Enter operation : +
Enter operand2: 1 2
(3, 4) + (1, 2) = (4, 6)
My question is how would I take from the user: an integer followed by a space followed by another integer and convert that into two seperate accessible int values that I can save as real and imaginary values.
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Oct 7, 2013
The output I'm getting here just counts every letter in the sentence and counts them as vowels. I'm trying to make the user defined function return the amount of vowels within the sentence.
#include <iostream>
#include <iomanip>
#include <cmath>
[Code].....
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Feb 22, 2014
Create a class to store a value that represents number of hours worked and number of days worked. Must ensure that the two representations are always consistent. I have to create 2 files, I'm pretty sure: a .cpp and a .h
This is what I have so far for my .h file (I know it's NOT functional...yet):
#include <iostream>
using namespace std;
class NumDays {
private:
double hours;
double days;
[Code] ...
I don't know how to start / create this .cpp file to define the variables.
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Feb 21, 2014
I'm trying to create a program that allows the user to enter an unknown number of income and expense amounts. The program has to us see a while loop and display the income total, expense total, and total profit or loss. I've got it really close, but I'm doing the loop wrong. It counts the sentinel value (-1) towards the total, instead of just ending like it is supposed to.
#include <iostream>
using namespace std;
int main() {
//declare variables
double incomeInput;
double expenseInput;
double incomeTotal=0;
double expenseTotal=0;
[code]....
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