Topics

1

DotNet / Crash on startup when using dock station.

« on: July 27, 2021, 12:14:58 am »

I use USB dock station with 2 monitors attached to it.

When I run app disconnected, it starts and run properly.
When I run app connected, it crash.
When I run app disconnected, then connect after app started, run properly.

internal class Program
{
    public static void Main(string[] args)
    {
         var window = new RenderWindow(new VideoMode(200,200), "test");
    }
}

Code: [Select]

Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at SFML.Graphics.RenderWindow.sfRenderWindow_createUnicode(VideoMode Mode, IntPtr Title, Styles Style, ContextSettings& Params)
   at SFML.Graphics.RenderWindow..ctor(VideoMode mode, String title, Styles style, ContextSettings settings)
   at SFML.Graphics.RenderWindow..ctor(VideoMode mode, String title)
   at Guids.Client.Program.Main(String[] args) in **[not important]**/Program.cs:line 10

2

Graphics / Should I try to adjust SFML or use OpenGL? Missing some 3D features.

« on: May 05, 2019, 09:20:42 pm »

Hello,

I would like to create a simple project which requires a couple of 3D features.

Basically I need:
1. 3D camera (orthographic)
2. 3D polygons
3. Heightmap

Should I try to adjust SFML? How hard it may be from your experience? Or maybe it would be better to go with pure OpenGL? I really like simplicity of SFML, maybe you know something similar for 3D with mentioned functionalities? 

3

Graphics / [Solved] AccessViolationException when using RenderWindow in C++CLI

« on: August 21, 2013, 05:26:22 pm »

Hello. I have managed class MainApp. Managed class can have only other managed types:

cannot define 'something' as a member of managed 'projekt_name': mixed types are not supported

I have other class (lets call it B) (this class have sf::RenderWindow) and it is normal C++ class. MainApp need to contain B. I can't have B in managed class so i have B* and in MainApp construtor i create new object for this pointer. In B i construct sf::RenderWindow by RenderWindow (WindowHandle handle), handle come from MainApp.

In B construktor I set setMouseCursorVisible( false ); and everything is ok so far.

But when I use display() or clear() evrything is going good but! When I close application i have

An unhandled exception of type 'System.AccessViolationException' occurred in project_name

I first destroy class B, and after that i destroy rest of controls in MainApp (when I change order effect is that same).

What prabobly I made wrong? It's banned to use sf::RenderWindow in object made by new?

4

Graphics / [SFML 2.0] Strange unhandled exception

« on: October 17, 2012, 12:24:55 pm »

Hello!

I have one problem.

#include <SFML/Graphics.hpp>

struct CFontd
{
    sf::Font * font;
    CFontd() {  
                font = new sf::Font();
                font->loadFromFile( "arial.ttf" );  
        }
} Font;

struct CFont
{
        sf::Text Text;
    CFont() {
                Text.setFont( *Font.font );
                Text.setString( "0" );
    }
};

int main() {
        CFont Test;
    sf::RenderWindow App( sf::VideoMode( 800, 600 ), "SFML works!" );
    while( App.isOpen() )
    {
        sf::Event ev;
        while( App.pollEvent( ev ) )
        {
            if( ev.type == sf::Event::Closed || ev.type == sf::Event::KeyPressed )
                 App.close();
           
        }
        App.display();
    }
    return 0;
}
 

All goes ok. But when I change implementation of CFontd class to

struct CFontd
{
    sf::Font font;
    CFontd() {  
        font.loadFromFile( "arial.ttf" );  
        }
} Font;

and of course

CFont() {
                Text.setFont( Font.font );
                Text.setString( "0" );
    }

I get unhandled exception after press any key (so i get ue when app closes).

So my question is: Why I can't use local "sf::Font" object in global objects?

5

Graphics / [SFML 2.0] How to change point color in RectangleShape?

« on: October 15, 2012, 04:56:03 pm »

I want to do health bar by using RectangleShape. In sfml 1.6 it was possible to change color for some points in Shape and receive a gradient effect instead color fill. It is possible with RectangleShape? I don't see appropriate function. So...

How to change chosen point color in RectangleShape?

6

General / Static linking, how? [Linux, 1.6]

« on: August 25, 2012, 05:22:14 am »

Hello!

I've problem. I've big mess in my head now.

I make projekt on linux and i want to static linking SFML 1.6. How to get in easiest way static libs?

I donwload from yours page SFML full SDK, and... ? I need to compile SFML? Or is way to make from *.so static lib *.a ?

//
ok, i compile SFML, and have *.a files.
I have linker errors, that comand is good ?

g++ -static main.o -L/home/akwes/libs/SFML-1.6/lib -lsfml-graphics-s -lsfml-window-s -lsfml-system-s
 

7

Graphics / How to save sf::Image with other than 72 ppi?

« on: April 30, 2012, 11:03:23 am »

Everything is in my question.

I can load *.png file with 300 ppi, but when i save it, i get file *.png with 72 ppi. It is option to change that ?

8

DotNet / Problem with install SFML.NET to C++/CLI

« on: October 05, 2011, 12:49:07 am »

VS 2008
SFML 1.6
I download "SFML.Net full SDK".
Normal SFML works fine in C++ projects but in C++/CLI i have linker errors.

1. I can`t find include folder in "dotnet" (but alredy have added includes form C++ SFML).
2. I add folder with libs form "dotnet"
3. I have no libs in "dotnet/lib" only *.dll-s, so i don`t know what write in Linker/Input
4. Add macro
5. Copy *.dll from "dotnet/lib" to project

And now have linker errors...

9

Graphics / Postfx - using, tutorials, galery ?

« on: September 12, 2011, 10:48:14 pm »

Hello!

I have a some questions. I would like to use postfx, but not quite know how.

What exactly i should to read? I will need to learn all OpenGL or something tutorials will be enough to write own effects?

Mayby is somewhere galery/colletion of ready postfx effects?

10

Graphics / Primitives, more points in polygon than are in code

« on: July 18, 2011, 04:04:57 pm »

I want to make efect like in WOW. When skill is not ready he has a black rect. Rect is disappears like clock. From 12:00 to 12:15 to 12:30, to 12:45, 12:00, but smoothly. I have something like this:

Code: [Select]


#include <iostream>
#include <conio.h>
#include <SFML/Graphics.hpp>

int main()
{
sf::RenderWindow oknoAplikacji( sf::VideoMode( 800, 600, 32 ), "Craftsman" );

// Left top point in rect
float x1 = 150;
float y1 = 50;

// Right down point in rect
float x2 = 650;
float y2 = 550;

// Coords of moving point
float ax = (x1+x2)/2;
float ay = y1;

// stopien - size of move for moving point
int stopien = 10;

// time - time from break to next step
int time = 0;

// how meny point will not draw
int point=0;

while(1)
{
oknoAplikacji.Clear( sf::Color( 255, 0, 0 ) );

sf::Shape Polygon;
Polygon.SetColor(sf::Color(0,0,0,100));


// When my moving point (ax, ay) is in one of nine points
// that point must be deletet (or not draw)
if      (ax == x2 && ay == y1)
point = 1;
else if (ax == x2 && ay == (y1+y2)/2)
point = 2;
else if (ax == x2 && ay == y2)
point = 3;
else if (ax == (x1+x2)/2 && ay == y2)
point = 4;
else if (ax == x1 && ay == y2)
point = 5;
else if (ax == x1 && ay == (y1+y2)/2)
point = 6;
else if (ax == x1 && ay == y1)
point = 7;
else if (ax == (x1+x2)/2 && ay == y1 && point == 7)
{
// starts from begin
ax = (x1+x2)/2;
ay = y1;
point = 0;
}

// behavior of moving point (when go left, when down etc.)
if (time >= 5)
{
if (point == 0)
{
ax+=stopien;
if (ax > x2)
ax = x2;
}
else if (point == 1)
{
ay+=stopien;
if (ay > (y2+y1)/2)
ay = (y2+y1)/2;
}
else if (point == 2)
{
ay+=stopien;
if (ay > y2)
ay = y2;
}
else if (point == 3)
{
ax-=stopien;

if (ax < (x2+x1)/2)
ax = (x2+x1)/2;
}
else if (point == 4)
{
ax-=stopien;
if (ax < x1)
ax = x1;
}
else if (point == 5)
{
ay-=stopien;
if (ay < (y2+y1)/2)
ay = (y2+y1)/2;
}
else if (point == 6)
{
ay-=stopien;
if (ay < y1)
ay = y1;
}
else if (point == 7)
{
ax+=stopien;
if (ax > (x2+x1)/2)
ax = (x2+x1)/2;
}
time = 0;
}

// Points of my Polygon

// my movin point to...
Polygon.AddPoint(ax,ay, sf::Color(0,0,0));


// ...next pionts (if exists)
if ( point <= 0 )
Polygon.AddPoint(x2,y1, sf::Color(0,0,0));
if ( point <= 1 )
Polygon.AddPoint(x2,(y1+y2)/2, sf::Color(0,0,0));
if ( point <= 2 )
Polygon.AddPoint(x2,y2, sf::Color(0,0,0));
if ( point <= 3 )
Polygon.AddPoint((x1+x2)/2,y2, sf::Color(0,0,0));
if ( point <= 4 )
Polygon.AddPoint(x1,y2, sf::Color(0,0,0));
if ( point <= 5 )
Polygon.AddPoint(x1,(y1+y2)/2, sf::Color(0,0,0));
if ( point <= 6 )
Polygon.AddPoint(x1,y1, sf::Color(0,0,0));

// always being, middle top point (we start from this point, and end hear)
Polygon.AddPoint((x1+x2)/2,y1, sf::Color(0,0,0));

    // middle of rect
Polygon.AddPoint((x1+x2)/2,(y1+y2)/2+70, sf::Color(0,0,0));

// for safety ( i don`t whant to have time biger than range int
if (time < 5)
time++;

oknoAplikacji.Draw(Polygon);

// drawing ALL POINTS OF POLYGON!
for (unsigned int i=0;i<Polygon.GetNbPoints();i++)
oknoAplikacji.Draw(sf::Shape::Circle(Polygon.GetPointPosition(i).x, Polygon.GetPointPosition(i).y, 5, sf::Color(255,255,255)));

oknoAplikacji.Display();
}
return 0;
}


But... WTF is this :

I draw all Points in my poly so why i have else?

Code: [Select]

for (unsigned int i=0;i<Polygon.GetNbPoints();i++)
oknoAplikacji.Draw(sf::Shape::Circle(Polygon.GetPointPosition(i).x, Polygon.GetPointPosition(i).y, 5, sf::Color(255,255,255)));