diff options
author | Chris Blackbourn <chrisbblend@gmail.com> | 2022-08-03 00:38:51 +0300 |
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committer | Chris Blackbourn <chrisbblend@gmail.com> | 2022-08-03 00:44:06 +0300 |
commit | 18377c4f5e4727f6f0b58bd0bae7a5a5686ea0a0 (patch) | |
tree | 1313bb852a3ab49f596d271cde4dee87c3e57a6c /release/scripts/modules | |
parent | 8081a05015f620db1d5759f80d9724699bbcd289 (diff) |
UI: Improve circle drawing of cursor for uv sculpting
Calculate segments based on radius.
Differential Revision: https://developer.blender.org/D15591
Diffstat (limited to 'release/scripts/modules')
-rw-r--r-- | release/scripts/modules/gpu_extras/presets.py | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/release/scripts/modules/gpu_extras/presets.py b/release/scripts/modules/gpu_extras/presets.py index ac9fd3cc1ff..222d9032cfd 100644 --- a/release/scripts/modules/gpu_extras/presets.py +++ b/release/scripts/modules/gpu_extras/presets.py @@ -1,6 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-or-later -def draw_circle_2d(position, color, radius, *, segments=32): +def draw_circle_2d(position, color, radius, *, segments=None): """ Draw a circle. @@ -11,10 +11,11 @@ def draw_circle_2d(position, color, radius, *, segments=32): :arg radius: Radius of the circle. :type radius: float :arg segments: How many segments will be used to draw the circle. - Higher values give besser results but the drawing will take longer. - :type segments: int + Higher values give better results but the drawing will take longer. + If None or not specified, an automatic value will be calculated. + :type segments: int or None """ - from math import sin, cos, pi + from math import sin, cos, pi, ceil, acos import gpu from gpu.types import ( GPUBatch, @@ -22,6 +23,12 @@ def draw_circle_2d(position, color, radius, *, segments=32): GPUVertFormat, ) + if segments is None: + max_pixel_error = 0.25 # TODO: multiply 0.5 by display dpi + segments = int(ceil(pi / acos(1.0 - max_pixel_error / radius))) + segments = max(segments, 8) + segments = min(segments, 1000) + if segments <= 0: raise ValueError("Amount of segments must be greater than 0.") |