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Vida Marcell

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Posts posted by Vida Marcell

    OpenGL/shaders Local rotaion need help

    in Programming

    Posted

    I'm trying to rotate an object in its local space in OpenGL
      

    glm::mat4 model = glm::mat4(1.0f);
model = glm::rotate(model, glm::radians(75.0f), glm::vec3(1.0f, 0.0f, 0.0f));
model = glm::rotate(model, glm::radians(75.0f), glm::vec3(0.0f, 1.0f, 0.0f));
model = glm::rotate(model, glm::radians(75.0f), glm::vec3(0.0f, 0.0f, 1.0f));

    The proglem is when i rotate the object around its X axis, the rotations after that will rotate it on global coordinates...

    How to organize complex programs?

    in Programming

    Posted

    For example, if someone makes a 3d modeling software, how is he going to separate the front-end code form back-end code. I always coded UAK apps in one file, and now its getting complex, i want to have a 3d viewer in one of the panels, and i already got the ui, but i dont want to write everything in one cpp file.

    What the __declspec(dllexport/import) is used for?

    in Programming

    Posted

    I'm currently working with dlls in c++, and the first thing i noticed is this function __declspec(dllexport/import). There isn't too much explanations for it, but i think, the export if for making a function usable by other software that can acess the dll file, and the import is for the software to call a function from the dll? Am i correct?

    Project i/o help

    in Programming

    Posted

    I want to be short, so i have a project manager, it can create and open projects. When creating it creates an xml file with properties like name, date, ect..

    But i have problems with opening, whenever i launch it, i want it to read all the projects from a txt file where in every line a path leads to their xml file, and i load it into a listbox.

    How do i detect that there are already text in a line? And if i want to delete a project from the manager (so also from the listbox) how do i know wich line should i delete?

    How can i structure my UAK code?

    in Programming

    Posted

    If i want to create 2 windows in 2 separate cpp files i get an error message saying "symbols already existing", when i rename every component (for example window->nwindow, ui->nui, displays->ndisplays) i only get 1 window opened, and its the original window, so not the one i modifyed.

    Directx 9 + UAK "expected a ;" problem

    in Programming

    Posted

    I'm trying to make a Directx 9 context in UAK based on this tutorial: http://www.directxtutorial.com/Lesson.aspx?lessonid=9-4-1

    And so far so good, but then this happens: (this is the only syntax problem)

    image.png.3a519370515cc386e3db72f8b3d39fd8.png

    here is my code: 

    #include "UltraEngine.h"
#include <d3d9.h>

using namespace UltraEngine;

// include the Direct3D Library file
#pragma comment (lib, "d3d9.lib")

// global declarations
LPDIRECT3D9 d3d;    
LPDIRECT3DDEVICE9 d3ddev;

// function prototypes
void initD3D(HWND hWnd);
void render_frame(void);
void cleanD3D(void);

// Callback function for resizing the viewport
bool ResizeViewport(const Event& ev, shared_ptr<Object> extra)
{
    // If the window resize event is captured
    auto window = ev.source->As<Window>();

    // Get the new size of the applications window
    iVec2 sz = window->ClientSize();

    return true;
}

int main(int argc, const char* argv[])
{

    HWND hWnd;

    // Get the available displays
    auto displays = GetDisplays();

    // Create a window
    auto window = CreateWindow("OpenGL Example", 0, 0, 800, 600, displays[0], WINDOW_TITLEBAR | WINDOW_RESIZABLE | WINDOW_CENTER);

    // Create user interface
    auto ui = CreateInterface(window);

    // Get the size of the user-interface
    iVec2 sz = ui->root->ClientSize();

    // Initialize an OpenGL context (get a hdc)
    HWND hwnd = (HWND)(window->GetHandle());
    HDC hdc = GetDC(hwnd);

    // set up and initialize Direct3D
    initD3D(hWnd);

    // Render loop (applications run loop)
    while (true)
    {
        // Check for events
        const Event ev = WaitEvent();

        switch (ev.id)
        {
        case EVENT_WINDOWPAINT:
            if (ev.source == window)
            {
                // Get and set the current size of the viewport
                iVec2 sz = window->ClientSize();
                if (sz.x < 1 or sz.y < 1) break;

                HWND hwnd = window->GetHandle();
                auto hdc = GetDC(hwnd);
                SwapBuffers(hdc);
                ReleaseDC(hwnd, hdc);
            }
            break;

        case EVENT_WINDOWCLOSE:
            if (ev.source == window)
            {
                return 0;
            }
            break;
        }

        render_frame();

    }

    // clean up DirectX and COM
    cleanD3D();


    // this function initializes and prepares Direct3D for use
    void initD3D(HWND hWnd)
    {
        d3d = Direct3DCreate9(D3D_SDK_VERSION);    // create the Direct3D interface

        D3DPRESENT_PARAMETERS d3dpp;    // create a struct to hold various device information

        ZeroMemory(&d3dpp, sizeof(d3dpp));    // clear out the struct for use
        d3dpp.Windowed = TRUE;    // program windowed, not fullscreen
        d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;    // discard old frames
        d3dpp.hDeviceWindow = hWnd;    // set the window to be used by Direct3D


        // create a device class using this information and the info from the d3dpp stuct
        d3d->CreateDevice(D3DADAPTER_DEFAULT,
            D3DDEVTYPE_HAL,
            hWnd,
            D3DCREATE_SOFTWARE_VERTEXPROCESSING,
            &d3dpp,
            &d3ddev);
    }


    // this is the function used to render a single frame
    void render_frame(void)
    {
        // clear the window to a deep blue
        d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 40, 100), 1.0f, 0);

        d3ddev->BeginScene();    // begins the 3D scene

        // do 3D rendering on the back buffer here

        d3ddev->EndScene();    // ends the 3D scene

        d3ddev->Present(NULL, NULL, NULL, NULL);   // displays the created frame on the screen
    }


    // this is the function that cleans up Direct3D and COM
    void cleanD3D(void)
    {
        d3ddev->Release();    // close and release the 3D device
        d3d->Release();    // close and release Direct3D
    }

    return 0;
}

     

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