DragFloat/Double with min/max and power

[Ghost-yc]

Hi! When i use dragfloat function with
ImGui::DragFloat3("Position", pos.data, .1f, -FLT_MAX, FLT_MAX, "%.1f", 1.25f)
mouse gently move the value changed huge

imgui version: v1.61

[ocornut]

Hello,

Previously the power curve was incorrectly computed for DragFloat() and it was difficult to make it works with different data type. It's now reliant on the min/max range, and unfortunately if you use power != 0.0 it will use v_max-v_min and land on numerical precision issues here.

I'm not sure what to say. It is a regression but allowing it may be tricky. If you use power curves you need a range like SliderFloat. I'll have to see if it affects many users..

[Ghost-yc]

ok thanks

[ocornut]

@Ghost-yc we have now made changes to add a ImGuiSliderFlags_Logarithmic flag instead of power (see #3361).

While it is a little akward, logarithmic drag and sliders cannot be used without bounds, you can however use, e.g.

ImGui::SliderFloat("Position", &f2, -1000000.0f, +1000000.0f, "%.6f", ImGuiSliderFlags_Logarithmic);