Cleanup: Simplify logic, follow style guide for integer types

- Use `int` instead of `unsigned int` for mesh indices
- Use C++ types (Array, float3, IndexRange)
- Use range based for loops

intern/quadriflow/quadriflow_capi.cpp

@@ -20,12 +20,12 @@
 
 #include "MEM_guardedalloc.h"
 
-#include "quadriflow_capi.hpp"
 #include "config.hpp"
 #include "field-math.hpp"
+#include "loader.hpp"
 #include "optimizer.hpp"
 #include "parametrizer.hpp"
-#include "loader.hpp"
+#include "quadriflow_capi.hpp"
 
 using namespace qflow;
 
@@ -217,10 +217,8 @@ void QFLOW_quadriflow_remesh(QuadriflowRemeshData *qrd,
   qrd->out_totverts = field.O_compact.size();
   qrd->out_totfaces = field.F_compact.size();
 
-  qrd->out_verts = (float *)MEM_malloc_arrayN(
-      qrd->out_totverts, 3 * sizeof(float), "quadriflow remesher out verts");
-  qrd->out_faces = (unsigned int *)MEM_malloc_arrayN(
-      qrd->out_totfaces, 4 * sizeof(unsigned int), "quadriflow remesh out quads");
+  qrd->out_verts = (float *)MEM_malloc_arrayN(qrd->out_totverts, sizeof(float[3]), __func__);
+  qrd->out_faces = (int *)MEM_malloc_arrayN(qrd->out_totfaces, sizeof(int[4]), __func__);
 
   for (int i = 0; i < qrd->out_totverts; i++) {
     auto t = field.O_compact[i] * field.normalize_scale + field.normalize_offset;

intern/quadriflow/quadriflow_capi.hpp

@@ -25,12 +25,12 @@ extern "C" {
 
 typedef struct QuadriflowRemeshData {
   float *verts;
-  unsigned int *faces;
+  int *faces;
   int totfaces;
   int totverts;
 
   float *out_verts;
-  unsigned int *out_faces;
+  int *out_faces;
   int out_totverts;
   int out_totfaces;