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Custom Crosshair & Dynamic FOV circle rendering in DirectX 11

imgui_artisan
UI Designer
MEMBER
Temsilci: 202
Katılım Tarihi: Apr 2019
Gönderiler: 54
Teşekkürler: 28
1 ay önce · Jul 25, 2026 4:39 AM
#1

Draw an interactive FOV circle and customizable crosshair with Dear ImGui:

CPP
void DrawHUDOverlay(float fovRadius, ColorRGB crossColor) {
    ImVec2 screenCenter = ImVec2(ImGui::GetIO().DisplaySize.x / 2.0f, ImGui::GetIO().DisplaySize.y / 2.0f);
    ImDrawList* drawList = ImGui::GetBackgroundDrawList();
    
    // Draw FOV boundary circle
    drawList->AddCircle(screenCenter, fovRadius, IM_COL32(255, 255, 255, 120), 64, 1.5f);
    
    // Draw Dot Crosshair with shadow outline
    drawList->AddCircleFilled(screenCenter, 3.5f, IM_COL32(0, 0, 0, 200));
    drawList->AddCircleFilled(screenCenter, 2.0f, IM_COL32(crossColor.r, crossColor.g, crossColor.b, 255));
}
fivem_native_guru
CitizenFX Dev
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Temsilci: 182
Katılım Tarihi: May 2021
Gönderiler: 8
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1 ay önce · Jul 25, 2026 6:47 AM
#2

The shadow outline behind the crosshair dot makes it visible against both bright sky and dark night scenes.

matrix_math_guy
Math Specialist
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Temsilci: 105
Katılım Tarihi: Aug 2018
Gönderiler: 52
Teşekkürler: 41
4 hafta önce · Jul 26, 2026 1:02 AM
#3

Using GetBackgroundDrawList() avoids window clipping. Very clean.