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1

General discussions / (OpenGL or SFML) doesn't render anythig

« on: January 12, 2014, 01:55:13 pm »

Hi guys, I have 2 classes, first one is my ScreenHost and second one is ViewController.
ScreenHost creates a ViewController and adds some Graph objects to it, then it waits until DataArived event raised and it calls Render() method on ViewController.
The problem is ViewController doesn't show anything, it just shows a white screen while the Render() method runs properly! But when I call Render() right after constructor it draws my shapes.
Here's my code (summerized):

////////////////////////////////////////////
/////// ScreenHost.SetScreen()
////////////////////////////////////////////
        public void SetScreen()
        {
            vc = new ViewController(800,  600, Rows, Cols);
            ...
            // If i call  vc.Render() it works
        }


////////////////////////////////////////////
/////// ScreenHost.DataArived  event
////////////////////////////////////////////

        void DataArived ()
        {
            // it runs Render() but doesn't show anything except a white screen (Render clears screen with black color)
            vc.Render();
        }


////////////////////////////////////////////
/////// ScreenHost.DataArived  event
////////////////////////////////////////////

        public void Render()
        {
            // it clears screen with black color
            renderWindow.Clear(Color.Black);
        }

2

DotNet / Wrong behavior while drawing and filling ConvexShape - SFML.Net

« on: January 05, 2014, 08:43:31 am »

Hi, I don't know did I miss some property to set or it is a bug, this is the problem:
My program is supposed to visualize a signal, so I need to draw a graph and fill inside of this graph, so I create a convex and set n+2 points to specify graph's border (n points for graph line and 2 point to make convex a closed shape((width, height) and (0, height)), it draws graph but has some malfunctions in 2 parts: 1- when draws outline it has some distortion 2- it fills convex like 3d, but I want to fill just inside of graph
I put graph's image: