Pixmap not updates visually in UI in real time rendering

[Dreikblack]

Painting working only before first Render()

#include "UltraEngine.h"

using namespace UltraEngine;

shared_ptr<Window> window;
shared_ptr<Framebuffer> framebuffer;
shared_ptr<World> menuWold;
shared_ptr<Interface> ui;
shared_ptr<Camera> uiCamera;

shared_ptr<Widget> drawPanel;
shared_ptr<Widget> btn;
shared_ptr<Pixmap> px;
int progress = 0;

void paint()
{
    progress++;
    for (int x = 0; x < progress * 10; x++)
    {
        for (int y = 0; y < 200; y++)
        {
            px->WritePixel(x, y, Rgba (20, 250, 10));
        }
    }
}

void initGui()
{
    auto default_font = LoadFont("Fonts\\arial.ttf");
    ui = CreateInterface(menuWold, default_font, framebuffer->GetSize());
    ui->SetRenderLayers(2);
    ui->root->SetColor(0.0f, 0.0f, 0.0f, 0.0f);
    uiCamera = CreateCamera(menuWold, PROJECTION_ORTHOGRAPHIC);
    uiCamera->SetPosition((float)framebuffer->GetSize().x * 0.5f, (float)framebuffer->GetSize().y * 0.5f, 0);
    uiCamera->SetRenderLayers(2);
    uiCamera->SetClearMode(CLEAR_DEPTH);
   
    drawPanel = CreatePanel(0, 50, 200, 200 , ui->root, PANEL_DEFAULT);
    drawPanel->SetColor(1, 0, 0);
    px = CreatePixmap(200, 200);
    drawPanel->SetPixmap(px);
    btn = CreateButton("Progress", 0, 0, 100, 20, ui->root);
 
    //works
    for (int i = 0; i < 5; i++)
    {
        paint();
    }
}


int main(int argc, const char* argv[])
{
    //Get the displays
    auto displays = GetDisplays();

    //Create a window
    window = CreateWindow("Ultra Engine", 0, 0, 1000, 1000, displays[0], WINDOW_DEFAULT);

    //Create a world
    menuWold = CreateWorld();

    //Create a framebuffer
    framebuffer = CreateFramebuffer(window);

    //Create light
    auto light = CreateBoxLight(menuWold);
    light->SetRange(-10, 10);
    light->SetRotation(15, 15, 0);
    light->SetColor(2);

    //Create camera
    auto camera = CreateCamera(menuWold);
    camera->SetClearColor(0.125);
    camera->SetPosition(0, 0, -3);
    camera->SetFov(70);

    //Create scenery
    auto box = CreateBox(menuWold);

    initGui();

    //Main loop
    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        while (PeekEvent())
        {
            const Event ev = WaitEvent();
            if (ev.source == btn && ev.id == EVENT_WIDGETACTION)
            {
                //pixmap not changes
                paint();
            }
            ui->ProcessEvent(ev);
        }
        menuWold->Update();
        menuWold->Render(framebuffer);
    }
    return 0;
}

 

[MarKli]

Hey, I think you have to use Redraw() for something like that.

 

void paint()
{
    progress++;
    for (int x = 0; x < progress * 10; x++)
    {
        for (int y = 0; y < 200; y++)
        {
            px->WritePixel(x, y, Rgba (20, 250, 10));
        }
    }
  
  drawPanel->Redraw();
}

 

[Dreikblack]

Hi! Unfortunately Redraw() changes nothing in this case. Pixmap painting worken for me in Ultra App Kit.

[Dreikblack]

Similar issue with icons:

#include "UltraEngine.h"

using namespace UltraEngine;

int main(int argc, const char* argv[])
{
    auto displays = GetDisplays();
    auto window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[0], WINDOW_CENTER | WINDOW_TITLEBAR);
    auto world = CreateWorld();
    auto framebuffer = CreateFramebuffer(window);

    auto camera = CreateCamera(world);
    camera->SetClearColor(0.125);
    camera->SetFov(70);
    camera->SetPosition(0, 0, -3);

    auto default_font = LoadFont("Fonts\\arial.ttf");
    auto ui = CreateInterface(world, default_font, framebuffer->GetSize());
    ui->SetRenderLayers(2);
    ui->root->SetColor(0.0f, 0.0f, 0.0f, 0.0f);

    auto ui_camera = CreateCamera(world, PROJECTION_ORTHOGRAPHIC);
    ui_camera->SetPosition((float)framebuffer->GetSize().x * 0.5f, (float)framebuffer->GetSize().y * 0.5f, 0);
    ui_camera->SetRenderLayers(2);
    ui_camera->SetClearMode(CLEAR_DEPTH);


    auto button = CreateButton("Button", 10, 10, 120, 30, ui->root);

    auto icon = LoadIcon("https://raw.githubusercontent.com/UltraEngine/Documentation/23cbb91bbaa1f22d6f3eb20cfa54a747d3062c33/Assets/Icons/help.svg");
    button->SetIcon(icon);

    while (window->Closed() == false and window->KeyDown(KEY_ESCAPE) == false)
    {
        while (PeekEvent()) {
            auto ev = WaitEvent();
            if (ev.source == button && ev.id == EVENT_WIDGETACTION)
            {
                button->SetIcon(LoadIcon("https://raw.githubusercontent.com/UltraEngine/Documentation/23cbb91bbaa1f22d6f3eb20cfa54a747d3062c33/Assets/Icons/new.svg"));

            }
            ui->ProcessEvent(ev);

        }
        world->Update();
        world->Render(framebuffer);
    }
    return 0;
}

 

[Josh]

If you use this code, it will work in the next build. It is necessary to set the pixmap to NULL before resetting the original pixmap, in order to trigger a change.

            if (ev.source == btn && ev.id == EVENT_WIDGETACTION)
            {
                //pixmap not changes
                paint();
                drawPanel->SetPixmap(nullptr);
                drawPanel->SetPixmap(px);
            }