Dummy Blender modifier

MOD_pizza.c

#include "BKE_modifier.h"
#include "DNA_mesh_types.h"
#include "DNA_modifier_types.h"

static Mesh *pizza_applyModifier(struct ModifierData *md,
                                 const struct ModifierEvalContext *ctx,
                                 struct Mesh *mesh)
{
  printf("PIZZA is cooking on data @%p\n", md);
  return mesh;
}

static void pizza_freeData(struct ModifierData *md)
{
  printf("PIZZA is freed on data @%p\n", md);
}

ModifierTypeInfo modifierType_Pizza = {
    /* name */ "Pizza",
    /* structName */ "PizzaModifierData",
    /* structSize */ sizeof(PizzaModifierData),
    /* type */ eModifierTypeType_Constructive,
    /* flags */ eModifierTypeFlag_AcceptsMesh,

    /* copyData */ modifier_copyData_generic,

    /* deformVerts */ NULL,
    /* deformMatrices */ NULL,
    /* deformVertsEM */ NULL,
    /* deformMatricesEM */ NULL,
    /* applyModifier */ pizza_applyModifier,

    /* initData */ NULL,
    /* requiredDataMask */ NULL,
    /* freeData */ pizza_freeData,
    /* isDisabled */ NULL,
    /* updateDepsgraph */ NULL,
    /* dependsOnTime */ NULL,
    /* dependsOnNormals */ NULL,
    /* foreachObjectLink */ NULL,
    /* foreachIDLink */ NULL,
    /* foreachTexLink */ NULL,
    /* freeRuntimeData */ NULL,
};