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Style Editor: Added preview of circle auto-tessellation when editing the corresponding value..

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This commit is contained in:
omar 2020-07-16 21:51:49 +02:00
parent 825f2ae455
commit 4be8155002
2 changed files with 24 additions and 2 deletions
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3
docs/CHANGELOG.txt
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@ -54,6 +54,7 @@ Other Changes:
- ImDrawList: Fixed minor bug introduced in 1.75 where AddCircle() with 12 segments would generate
an extra vertex. (This bug was mistakenly marked as fixed in earlier 1.77 release). [@ShironekoBen]
- Demo: Tweak "Child Windows" section.
- Style Editor: Added preview of circle auto-tessellation when editing the corresponding value.
- Backends: OpenGL3: Added support for glad2 loader. (#3330) [@moritz-h]
@ -129,7 +130,7 @@ Other Changes:
Updated various links/wiki accordingly. Added FAQ entry about DPI. (#2861) [@ButternCream, @ocornut]
- CI: Added CI test to verify we're never accidentally dragging libstdc++ (on some compiler setups,
static constructors for non-pod data seems to drag in libstdc++ due to thread-safety concerns).
Fixed a static constructor which led to this dependency on some compiler setups.
Fixed a static constructor which led to this dependency on some compiler setups. [@rokups]
- Backends: Win32: Support for #define NOGDI, won't try to call GetDeviceCaps(). (#3137, #2327)
- Backends: Win32: Fix _WIN32_WINNT < 0x0600 (MinGW defaults to 0x502 == Windows 2003). (#3183)
- Backends: SDL: Report a zero display-size when window is minimized, consistent with other backends,

23
imgui_demo.cpp
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@ -3829,7 +3829,28 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
ImGui::PushItemWidth(100);
ImGui::DragFloat("Curve Tessellation Tolerance", &style.CurveTessellationTol, 0.02f, 0.10f, 10.0f, "%.2f");
if (style.CurveTessellationTol < 0.10f) style.CurveTessellationTol = 0.10f;
ImGui::DragFloat("Circle segment Max Error", &style.CircleSegmentMaxError, 0.01f, 0.10f, 10.0f, "%.2f");
// When editing the "Circle Segment Max Error" value, draw a preview of its effect on auto-tessellated circles.
ImGui::DragFloat("Circle Segment Max Error", &style.CircleSegmentMaxError, 0.01f, 0.10f, 10.0f, "%.2f");
if (ImGui::IsItemActive())
{
ImGui::SetNextWindowPos(ImGui::GetCursorScreenPos());
ImGui::BeginTooltip();
ImVec2 p = ImGui::GetCursorScreenPos();
float RAD_MIN = 10.0f, RAD_MAX = 80.0f;
float off_x = 10.0f;
for (int n = 0; n < 7; n++)
{
const float rad = RAD_MIN + (RAD_MAX - RAD_MIN) * (float)n / (7.0f - 1.0f);
ImGui::GetWindowDrawList()->AddCircle(ImVec2(p.x + off_x + rad, p.y + RAD_MAX), rad, ImGui::GetColorU32(ImGuiCol_Text), 0);
off_x += 10.0f + rad * 2.0f;
}
ImGui::Dummy(ImVec2(off_x, RAD_MAX * 2.0f));
ImGui::EndTooltip();
}
ImGui::SameLine();
HelpMarker("When drawing circle primitives with \"num_segments == 0\" tesselation will be calculated automatically.");
ImGui::DragFloat("Global Alpha", &style.Alpha, 0.005f, 0.20f, 1.0f, "%.2f"); // Not exposing zero here so user doesn't "lose" the UI (zero alpha clips all widgets). But application code could have a toggle to switch between zero and non-zero.
ImGui::PopItemWidth();