Karsticles
Member
I am thinking about learning the Unity development system. What is its coding language most similar to, if anyone knows?
-
Hey, guest user. Hope you're enjoying NeoGAF! Have you considered registering for an account? Come join us and add your take to the daily discourse.
Programming |OT| C is better than C++! No, C++ is better than C
- Thread starter Kikarian
- Start date
Garcia
Member
Is the opposite also true? I'm learning Java; will Unity be easier to understand once I get to a competent programming level?
smokeandmirrors
Banned
once you get to a competent level in any language it should be easy to pick up another language fairly quickly.
Hey guys I'm getting ready to start my computer science classes next fall for a bachelors degree. I have 2 years of school to work through. Haven't decided what I want to specifically do after I finish but any advice on what language(s) I should focus on as a beginner and then build on to hopefully secure a job?
Don't worry about the language too much. Just find out what it is you want to make and try to do it in any language.
This is one of the reasons why I think it's important to focus more on the underlying concepts in the introductory courses instead of focusing on the particular syntax.
But that discussion has been had before.
I don't really agree with this. I think you should provide some advice for where he can start. The vast amount of information out there for beginners can become overwhelming very quickly. At least it did for me.
I would suggest starting with Python, but make sure to study what you are doing with the language in depth instead of just writing out code. Take the time to analyze each section you write to know exactly what it's doing. Try and get a program written and running over the summer and know what it's doing under the hood. That will put you at a major advantage when you start school.
That way, once you are comfortable you can easily move on to different languages and feel comfortable.
OK, I figure I will learn the basis for coding through my classes so I was just wondering if I should put a focus on a language but figuring out what it is what I want to do first makes more sense. Thanks.
Send an email to your professor or the head of the CS department and ask them what language they will be using.
I see where you're coming from and agree that Python can be a great language to start with but I guess my point was it depends on what he wants to do since the language is just a means to an end. If he's interested in building websites / web apps then he may want to learn HTML/JavaScript instead, etc.
EDIT: There's a good chance you can also figure out what languages your school will use by going to the course listings and looking at CS 101.
are any of the lynda courses for basic programming in Python or any other language generally alright? or maybe just fundamental logics -- I'm a math major who's done some javascript and python before, but I haven't had any formal instruction with any programming languages outside of high school, so I'm likely beginning at the fundamentals
While I'm not familiar with Lynda courses, I suspect these are better sources, and also free.
https://www.udacity.com/course/cs101
http://learnpythonthehardway.org/
This is what my qmake file looks like, note the include path, depend path and library path, my libraries are where you might expect from this.
Code:
QT += core gui
QT += opengl
TARGET = untitled
TEMPLATE = app
SOURCES += main.cpp\
mainwindow.cpp \
glwidget.cpp
HEADERS += mainwindow.h \
glwidget.h
FORMS += mainwindow.ui
LIBS += -LD:/glew/lib -lglew32s
INCLUDEPATH += D:/glew/include
DEPENDPATH += D:/glew/include
PRE_TARGETDEPS += D:/glew/lib/glew32s.lib
Code:
Since I'm beginning to run out of time I switche dover to developing this on linux in a vm in which I managed to get glew and qt to work together but now I've got new problems
Code:
mvpLoc = glGetUniformLocation(program, "MVP");
normLoc = glGetUniformLocation(program, "MatNorm");both uniforms are ready and waiting in my vertex shader but the second get uniform call returns -1 every time. This is what my vertex shader looks like right now.
Code:
in vec3 pos;
in vec3 norm;
in vec2 tex;
uniform mat4 MVP;
uniform mat3 MatNorm;
void main(void)
{
gl_Position = MVP * vec4(pos, 1);
}money wise Lynda is free for me -- my school provides it. I'm not a fan of udacity or edx courses, and I've used the HTML book on the second site a bit. I'll do that some more, but I'm still wondering if anyone has used Lynda for anything programming I wise.
Either way I'll be trying Lynda out, hah. Gonna see a few things. Thanks for the resources, though
I can't recommend ApiTrace enough.
https://github.com/apitrace/apitrace
Unfortunately, it requires building from source. Fortunately, it's not too hard.
Also note that there are functions to read back errors. See the function "compile_shader" here: https://github.com/slavik81/menger/blob/newgl/main.c
I have used Lynda's courses for Android development. I thought they were alright.
cool, any specific comments?
chickdigger802
Banned
anyone have any experience with the java ide intellij?
friend was talking about it, seems alright.
friend was talking about it, seems alright.
I know guys who swear by it. I used it for a short while and the refactoring tools seem really powerful. There's all kinds of shit like automatically creating getters and setters for members but I question how valuable a lot of that is.
mugurumakensei
Member
It's valuable in building up all that base code and tracing down usage when refactoring. It saves a lot of time. For professional development though, it's Jira and source control integration are far more valuable time savers. That Intellij ultimate supports pretty much any major web language is also useful.
It's more than alright. Every Java place I've worked where IDE choices have been made by anyone halfway competent has used IntelliJ.
Not really. I didn't spend too much time with the courses. They seemed to be pretty similar to just going through the developer site on Google, but in video form.
I've been using IntelliJ since I first found it a year ago. I wouldn't write Java using anything else.
chickdigger802
Banned
alas i don't think what i do classify as open source 
think i might mess with it for home use stuff though. their homepage is quite modern design looking which is already a + over most shit lol
think i might mess with it for home use stuff though. their homepage is quite modern design looking which is already a + over most shit lol
alas i don't think what i do classify as open source
The community edition is fine for getting started with. I upgraded to the full thing when they had their Mayan end-of-the-world sale in 2012...
gotcha, thanks!
Which philosophy of learning c++ do you guys agree with more and why? the learn C, then slowly transition to C++ style, or the learn c++ straight up style? Thinking of getting C++ Primer to replace my C++ primer plus book which is based on the former style and use that to read up and self teach myself more C++ over the summer.
I have a somewhat rudimentary problem right now with HTML and JS. While I know how to disable a button, I'm not sure on how to make it conditional.
Right now I've got a form.
Disabling the button in JS:
What I'm assuming is that the value of select is determined by the OPTION value of whatever is chosen in the dropdown menu. If that's true then what I need to make happen those is to execute the JS function in <SELECT> but I'm not sure on how to add the function to it.
Right now I've got a form.
Code:
<FORM>
<input type="text" id="realtxt"/>
<SELECT id="realitems">
<OPTION value="1">
<OPTION value="max">Enter the highest number
<OPTION value="min">Enter the lowest number
<OPTION value="guess">Guess a number
</SELECT>
<button accesskey="v" id="btnVerify" onclick="result()"> Result </button>
</FORM>Disabling the button in JS:
Code:
function disable()
{
if(document.getElementById("realitems").value === "1")
document.getElementById("btnVerify").disabled = true;
else
document.getElementById("btnVerify").disabled = false;
};What I'm assuming is that the value of select is determined by the OPTION value of whatever is chosen in the dropdown menu. If that's true then what I need to make happen those is to execute the JS function in <SELECT> but I'm not sure on how to add the function to it.
Changing your code:
The 'onchange' attribute that I added to the select will call the disable() method whenever it's changed.
Some of the other additions are just so I could test it in jsfiddle. Which you can see here. I didn't deactivate the button on the initial page load, too lazy.
Code:
<FORM>
<input type="text" id="realtxt"/>
<SELECT id="realitems" onchange='disable()'>
<OPTION value="1"></OPTION>
<OPTION value="max">Enter the highest number</OPTION>
<OPTION value="min">Enter the lowest number</OPTION>
<OPTION value="guess">Guess a number</OPTION>
</SELECT>
<button accesskey="v" id="btnVerify" onclick="result()"> Result </button>
</FORM>
Code:
function disable()
{
var mySelect = document.getElementById('realitems');
if(mySelect.options[mySelect.selectedIndex].value == 1)
{
document.getElementById("btnVerify").disabled = true;
}
else
{
document.getElementById("btnVerify").disabled = false;
}
}The 'onchange' attribute that I added to the select will call the disable() method whenever it's changed.
Some of the other additions are just so I could test it in jsfiddle. Which you can see here. I didn't deactivate the button on the initial page load, too lazy.
Hi,
Need some help with windows file server and Java. We have a file we are writing to a share drive in windows. There is one letter in the file that is coming out weird. The letter is this:
ö. It is suppose to be an accented o. So i tested this on my local drive. I ftped the file in my code to my local and the accented o displays correctly. When i ftp to the share drive, I get this ón. I tried encoding the filename in utf8, but I still get the same result. Is there something I am missing here? it looks fine when I ftp to local drive but once I ftp to share drive, it blows up.
Thanks.
Need some help with windows file server and Java. We have a file we are writing to a share drive in windows. There is one letter in the file that is coming out weird. The letter is this:
ö. It is suppose to be an accented o. So i tested this on my local drive. I ftped the file in my code to my local and the accented o displays correctly. When i ftp to the share drive, I get this ón. I tried encoding the filename in utf8, but I still get the same result. Is there something I am missing here? it looks fine when I ftp to local drive but once I ftp to share drive, it blows up.
Thanks.
Changing your code:
Code:<FORM> <input type="text" id="realtxt"/> <SELECT id="realitems" onchange='disable()'> <OPTION value="1"></OPTION> <OPTION value="max">Enter the highest number</OPTION> <OPTION value="min">Enter the lowest number</OPTION> <OPTION value="guess">Guess a number</OPTION> </SELECT> <button accesskey="v" id="btnVerify" onclick="result()"> Result </button> </FORM>
Code:function disable() { var mySelect = document.getElementById('realitems'); if(mySelect.options[mySelect.selectedIndex].value == 1) { document.getElementById("btnVerify").disabled = true; } else { document.getElementById("btnVerify").disabled = false; } }
The 'onchange' attribute that I added to the select will call the disable() method whenever it's changed.
Some of the other additions are just so I could test it in jsfiddle. Which you can see here. I didn't deactivate it on the initial page load, too lazy.
Ahh, so it is like an array. In that case, if I want the blank option to disable the button would I then change ==1 to ==0?
that ==1 is the actual value of the option that you set as 'value = 1'.
You could also change the code I wrote to:
Code:
if (mySelect.selectedIndex == 0)
Code:
if(document.getElementById("realitems").selectedIndex == 0)in order to do what you just suggested.
Declaring
Outside of any functions but within <script></script> should act as a global variable too yes?
Yes.
Code:
#include <iostream>
#include <iomanip>
#include "Node1.h"
using namespace std;
using namespace dijoseph;
template<class Item>
void displayPoly(node<Item>* poly);
template<class Item>
Item solve(node<Item>* poly, Item x);
void description(); // Function prototype
void instructions();
template<class Item>
void setPoly(node<Item>*& poly);
int main()
{
// Declaring variables
char menu = 'A';
node<float>* cursor = NULL, *poly2 = NULL, *poly1 = NULL;
float x;
cout << fixed << setprecision(1); // IO Manipulation
description(); // Function call
while (menu != 'X') // Menu loop
{
cout << "\nPlease enter a menu option: ";
cin >> menu;
switch (toupper(menu))
{
case '1': // 1 for displaying the polynomial
if (poly1 != NULL)
{
listClear(poly1);
}
setPoly(poly1);
break;
case '2': // 2 for setting the coefficients of the polynomial
displayPoly(poly1);
break;
case '3': // 3 for erasing the coefficients of the polynomial
if (poly1 != NULL)
{
listClear(poly1);
}
setPoly(poly1);
if (poly2 != NULL)
{
listClear(poly2);
}
setPoly(poly2);
displayPoly(multiplyPoly(poly1, poly2));
break;
case '4': // 4 for adding two polynomials
if (poly1 != NULL)
{
listClear(poly1);
}
cout << "Poly has been erased" << endl;
break;
case '5': // 5 for solving the polynomial for a value of x
cout << "Enter a value for x: ";
cin >> x;
cout << "The poly resolves to " << solve(poly1, x) << endl;
break;
case 'H': // H for instructions on how to properly enter the coefficients of polynomials
instructions();
break;
case 'X':
exit(1); // Exits program
default:
cout << "Invalid entry" << endl; // Error handling
}
}
return 0;
}Is there a way to change node<float> to something generic, and then request the data type from the user?
A large portion of things you have to use to get things done in C is bad style in C++ code. If C++ is what you want to write, learning C first is a total waste of time. If you keep going with C++ you'll learn all the same things eventually but from a better context.
Templates work well for types that can be determined statically (that is, before you run your program).
On their own, templates are not suited for determining types dynamically (that is, while your program is running - what you want to do by requesting the type from the user). You need to either supplement or replace the use of templates with something else that supports dynamic type checking.
Slavik81 described a method for doing manual type checking using an enum and a union. The other popular alternative is to use automatic type checking via Polymorphism.
Ah, the program I'm taking at my college uses the philosophy of learning C and then learn c++, but slowly transition to using c++ OO tools. We're still using c style null terminated strings exclusively in my C++ class.
I've managed to solve all of the previous issues I've had with my openGL project but now all of my objects have a gl_FragColor.z value of 1, aka their depth is 1.0f, aka maximum depth which means they are not working correctly.
My initialization of depth testing and matrices wherein nothing is displayed
changing the depth function from less to less than or equal to causes everything to be displayed, without the benefit of depth testing of course. Likewise an examination of gl_FragColor.z in the fragment shader confirms every fragment has 1.0f
of course I also call glClear in my rendering function to clear the depth back to 1.0
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
Im using glm for my matrix generation and as far as I can tell i'm using it correctly. My trackball rotation works correctly and all the perspective transformations are correct.
vertex shader
Is it possible it's not doing perspective division on its own?
My initialization of depth testing and matrices wherein nothing is displayed
Code:
projection = perspective(fov, aspect, 0.01f, 10.0f);
view = lookAt(eye, vec3(0.0f,0.0f,0.0f), up);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glClearDepth(1.0f);changing the depth function from less to less than or equal to causes everything to be displayed, without the benefit of depth testing of course. Likewise an examination of gl_FragColor.z in the fragment shader confirms every fragment has 1.0f
of course I also call glClear in my rendering function to clear the depth back to 1.0
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
Im using glm for my matrix generation and as far as I can tell i'm using it correctly. My trackball rotation works correctly and all the perspective transformations are correct.
vertex shader
Code:
//input position
in vec3 pos;
//input vertex normal
in vec3 norm;
//TODO texCoord, bitangent, tangent
//output to fragment shader
varying vec3 normal;
varying vec3 lpos;
varying vec3 fpos;
//modelview matrix
uniform mat4 MV;
//projection matrix
uniform mat4 P;
//normal transform matrix
uniform mat3 NML;
//TODO height, normal, albedo, gloss textures
//TODO define and control light on c++ side
void main(void)
{
//eye space transformation
fpos = (MV * vec4(pos,1.0f)).xyz;
//hard-coded light position for now
lpos = (MV * vec4(2.0f,2.0f,0.0f,1.0f)).xyz;
normal = NML * norm;
//project eye space vertex
gl_Position = P * vec4(fpos,1.0f);
}Is it possible it's not doing perspective division on its own?
Man, I do NOT miss this shit. Used to do OpenGL and OpenSceneGraph programming for a defense company.
Have you tried using jQuery instead of JS?
Hahaaaaaaaaaaaaaaaa I've lost the plot, my vertex shader is apparently spitting out random crap to my fragment shader dependent on... order of instructions?
So, this code produces a cube with no texturing but normals are correct and the lighting is good.
THIS
gives a properly textured and lit cube.
THIS
Causes no vertices to be drawn.
So, this code produces a cube with no texturing but normals are correct and the lighting is good.
Code:
in vec3 pos;
in vec3 normal;
in vec2 texCoord;
in vec3 tangent;
//modelview matrix
uniform mat4 MV;
//projection matrix
uniform mat4 P;
//normal transform matrix
uniform mat3 NML;
//output to fragment shader
out vec3 fNormal;
out vec3 light_pos;
out vec3 fPos;
out vec2 fTexCoord;
void main(void)
{
[B] gl_Position = P * MV * vec4(pos,1);
fNormal = NML * normal;
vec3 ohMyGodIBrokeIt = cross(normal, tangent);
light_pos = (MV * vec4(2, 2, 0, 1)).xyz;
fPos = (MV * vec4(pos,1.0f)).xyz;
fTexCoord = texCoord;
[/B] //project eye space vertex
}THIS
Code:
gl_Position = P * MV * vec4(pos,1);
fNormal = NML * normal;
light_pos = (MV * vec4(2, 2, 0, 1)).xyz;
fPos = (MV * vec4(pos,1.0f)).xyz;
fTexCoord = texCoord;
[B] vec3 ohMyGodIBrokeIt = cross(normal, tangent);
[/B]THIS
Code:
[B] fNormal = NML * normal;
[/B] gl_Position = P * MV * vec4(pos,1);
light_pos = (MV * vec4(2, 2, 0, 1)).xyz;
fPos = (MV * vec4(pos,1.0f)).xyz;
fTexCoord = texCoord;
vec3 ohMyGodIBrokeIt = cross(normal, tangent);Causes no vertices to be drawn.
mugurumakensei
Member
Sometimes you make sacrifices for scalability. Granted, there are a few nosql databases such as FoundationDB that are ACID compliant so I'm not really sure if it's a good excuse.
Big Chungus
Member
Just finished one of my last programming assignments for this semester and i'm pretty damn happy.
The assignment might seem easy to some of you expert programmers but i'm just glad I got through it.
The assignment might seem easy to some of you expert programmers but i'm just glad I got through it.
oxrock
Gravity is a myth, the Earth SUCKS!
I'm no expert, share your epic moment.
As you probably guessed from my earlier comment, I think that's a highly unfortunate philosophy for a C++ class to choose - it's the classic mistake of teaching the wrong way first and the right way after, and has other problems as well. Worst case, the class cuts off at a point where they actually haven't yet taught you the right ways of doing things, and feeds the scourge of "C/C++" programmers loose in the wild.
systemfehler
Member
I am currently in for a hard-reset of a lot of my "knowledge" when it comes to programming because I have a lot with Verilog to do. Where proper "timing" is essential since most of the work happens at the same time.
Mr_Appleby
Member
welcome to the awesome world of openGL
it's hard to help you debug without the rest of the program, it could also be a factor of running on a VM, what kind of GPU access it has or if it's using MESA. have you done the obvious of starting with 'clean' shaders and adding the features in in order? ie. get the fragments on, add lighting, add textures instead of trying to get it all to work at once. also do you have shader compile errors output?