[Bf-blender-cvs] [b20c05aa2b1] gpencil-new-data-proposal: Tests: Avoid repeatedly resizing curves

[Hans Goudey]

Commit: b20c05aa2b1782660bc06440d922e116e0171bc9
Author: Hans Goudey
Date:   Mon Dec 12 13:19:50 2022 -0600
Branches: gpencil-new-data-proposal
https://developer.blender.org/rBb20c05aa2b1782660bc06440d922e116e0171bc9

Tests: Avoid repeatedly resizing curves

This is around four times faster

===================================================================

M	source/blender/blenkernel/intern/gpencil_new_proposal_test.cc

===================================================================

diff --git a/source/blender/blenkernel/intern/gpencil_new_proposal_test.cc b/source/blender/blenkernel/intern/gpencil_new_proposal_test.cc
index a40da2a6719..3b1c56baa01 100644
--- a/source/blender/blenkernel/intern/gpencil_new_proposal_test.cc
+++ b/source/blender/blenkernel/intern/gpencil_new_proposal_test.cc
@@ -10,6 +10,7 @@
 #include "BLI_math_vec_types.hh"
 
 #include "BKE_curves.hh"
+#include "BKE_curves_utils.hh"
 #include "BKE_gpencil.h"
 
 #include "DNA_gpencil_types.h"
@@ -36,12 +37,16 @@ static GPData build_gpencil_data(int num_layers,
     gpd.add_frames_on_layer(i, test_start_frames);
   }
 
-  for (const int i : gpd.frames().index_range()) {
-    for (const int j : IndexRange(strokes_per_frame)) {
-      GPStroke stroke = gpd.frames_for_write(i).add_new_stroke(points_per_stroke);
-      for (const int k : stroke.points_positions_for_write().index_range()) {
-        stroke.points_positions_for_write()[k] = {
-            float(k), float((k * j) % stroke.points_num()), float(k + j)};
+  for (const int frame_i : gpd.frames().index_range()) {
+    CurvesGeometry &strokes = gpd.frames_for_write(frame_i).strokes_as_curves();
+    strokes.resize(points_per_stroke * strokes_per_frame, strokes_per_frame);
+    strokes.offsets_for_write().drop_back(1).fill(points_per_stroke);
+    curves::accumulate_counts_to_offsets(strokes.offsets_for_write());
+    MutableSpan<float3> positions = strokes.positions_for_write();
+    for (const int curve_i : strokes.curves_range()) {
+      const IndexRange points = strokes.points_for_curve(curve_i);
+      for (const int i : IndexRange(points.size())) {
+        positions[points[i]] = {float(i), float(curve_i * i % points.size()), float(i + curve_i)};
       }
     }
   }