Messages

1

Graphics / sf::Image from list of sf::Shapes?

« on: June 23, 2011, 01:15:22 am »

Okay that's what I figured.

The graph fills only a part of the RenderWindow when it's drawn, and that's the only thing I want saved to an image file.

Is there a way I can cut down an sf::Image to certain dimensions after calling RederWindow.Capture?  Otherwise, I tried sf::Image.CopyScreen(RW, sf::IntRect) but the screenshot is mirrored.

2

Graphics / sf::Image from list of sf::Shapes?

« on: June 22, 2011, 12:47:44 am »

Hey everyone.

The project I'm currently working on generates a graph.  It creates an std::vector of sf::Shapes that represent the plots, grid, etc...

I want to be able to export this list of shapes to a file.  I know that Image.SaveToFile can do this with images, but is there a way to combine all of my shapes into one sf::Image?

3

Graphics / Sprites being draw to world coordinates instead of screen

« on: March 01, 2011, 01:08:26 am »

window.PreserveOpenGLStates seemed to work.  Is this because PreserveOpenGLStates works differently for mac than it does for linux?  I don't know why I didn't think about that...

Thanks for the help Laurent.

4

Graphics / Sprites being draw to world coordinates instead of screen

« on: February 28, 2011, 05:47:31 pm »

I am using both SFML (window, system, and graphics) and OpenGl. SFML for the windowing/menu and opengl for rendering the scene.  I can't really provide a small working example because the whole project is pretty split up.

Currently all I use opengl for is displaying a bunch of cubes:

Code: [Select]

void drawScene(){
  glBegin(GL_QUADS);
  {
    glVertex3f(...);
  ...
  }
}


I use shapes/sprites to draw the menu (this is just the background, but other parts are made similarly):

Code: [Select]

void createMenu(){
  sf::Shape fileMenuBackground;
  ...
}


Before and after I draw the menu (after I draw the scene of openGL cubes) I call these two functions:

Code: [Select]

void preSFML(){
glMatrixMode(GL_MODELVIEW);  glPushMatrix();
glMatrixMode(GL_PROJECTION); glPushMatrix();
glPushAttrib(GL_COLOR_BUFFER_BIT | GL_CURRENT_BIT   | GL_ENABLE_BIT  |
GL_TEXTURE_BIT | GL_TRANSFORM_BIT | GL_VIEWPORT_BIT);

glDisable(GL_ALPHA_TEST);
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
}


Code: [Select]

void Gui::postSFML(){

glMatrixMode(GL_PROJECTION); glPopMatrix();
glMatrixMode(GL_MODELVIEW);  glPopMatrix();
glPopAttrib();
}

So it looks something like this:

Code: [Select]

drawScene();
preSFML();
     App->Draw(fileMenuBackground);
     ...
postSFML();


All of this runs just fine in linux.  The menu is properly drawn to the 2D screen coordinates and the cubes drawn to the 3D scene coordinates.  When I run this program on a mac, both the menu and the cubes are drawn to the 3D scene coordinates.  Hopefully this illustrates my problem a little bit better.  I am probably just be doing something wrong or have a misconception on how openGL works.  

What I was asking in my first post is if there is a known issue of why the menu is being drawn to the 3D coordinates.  Is there something I'm doing in the preSFML and postSFML functions that does not work properly on a mac?  Possibly anything else?  I appreciate the help.

5

Graphics / Sprites being draw to world coordinates instead of screen

« on: February 25, 2011, 11:39:13 pm »

I am working on a project that is used on both Macs and Linux machines.  

In linux, the program runs just fine.  I have a few sprites for a menu that are mapped to the screen coordinates and shows up correctly.  On a mac, this same program maps the sprites to the world coordinates instead of the screen coordinates, so there is a gigantic menu bar in the 3D space.  I've double checked to make sure I am pushing the gl_projection and gl_modelview matrices before I draw the sprites, and then pop them after (along with the other openGL cleanup stuff).

Is there a known bug or issue that I am not compensating for?  Can anyone point me to information on this problem?

Thanks

6

Graphics / Static sprite size on resize event

« on: January 27, 2011, 12:11:41 am »

Nice, that did the trick!  Thank you.

Here's the code I added:

Code: [Select]


static sf::View view;
sf::FloatRect rect(0, 0, newWidth, newHeight);
view.SetFromRect(rect);
App.SetView(view);



7

Graphics / Static sprite size on resize event

« on: January 26, 2011, 11:38:07 pm »

On Event::Resized (when someone clicks and drags the corner of the App window to be smaller/larger) all of my sprites and shapes get smaller/larger respectively.  Is there a way that I can disable this from happening?  I'm running an OpenGL visualization with sprites that make up my menu.

My code is a bit intricate to post right now, but later I can put together an example to better illustrate my question.  Thanks for the help.