meshing

2 files changed, 55 insertions, 0 deletions

diff --git a/src/text.cc b/src/text.cc
index fab8cbb..2ad57f3 100644
--- a/src/text.cc
+++ b/src/text.cc
@@ -236,3 +236,47 @@ void wayc_font_deinit(struct font_s* font) {
   wayc_atlas_deinit(&font->atlas);
   FT_Done_Face(font->face);
 }
+
+bool wayc_text_mesh_init(struct text_mesh_s* mesh, const char* text,
+                         usize text_len, struct font_s* font) {
+  wayc_notnull(mesh);
+  wayc_notnull(text);
+  wayc_notnull(font);
+  memset(mesh, 0, sizeof(*mesh));
+
+  bool success = false;
+
+  usize nverts = text_len * WAYC_QUAD_NVERTS;
+  usize nindices = text_len * WAYC_QUAD_NINDICES;
+
+  usize bytes_verts = nverts * sizeof(struct text_vertex_s);
+  usize bytes_indices = nindices * sizeof(u16);
+  usize bytes_glyphs = text_len * sizeof(struct glyph_s);
+
+  struct text_vertex_s* verts = (struct text_vertex_s*)mi_malloc(bytes_verts);
+  wayc_defer_cond(mi_free(verts), success, true);
+
+  u16* indices = (u16*)mi_malloc(bytes_indices);
+  wayc_defer_cond(mi_free(indices), success, true);
+
+  struct glyph_s* glyphs = (struct glyph_s*)mi_malloc(bytes_glyphs);
+  wayc_defer_cond(mi_free(glyphs), success, true);
+
+  enum font_error_e err =
+      wayc_font_raster_text(font, text, text_len, glyphs, text_len);
+  if (err != FONT_ERROR_NONE) return false;
+
+  return true;
+}
+
+void wayc_text_mesh_deinit(struct text_mesh_s* mesh) {
+  wayc_notnull(mesh);
+
+  if (mesh->vertices == nullptr || mesh->indices == nullptr) return;
+
+  mi_free(mesh->vertices);
+  mi_free(mesh->indices);
+
+  mesh->vertices = nullptr;
+  mesh->indices = nullptr;
+}
diff --git a/src/text.h b/src/text.h
index 5b578d0..8840c85 100644
--- a/src/text.h
+++ b/src/text.h
@@ -71,3 +71,14 @@ enum font_error_e wayc_font_raster_text(struct font_s* font, const char* text,
                                         usize max_glyphs);
 
 void wayc_font_deinit(struct font_s* font);
+
+struct text_mesh_s {
+  struct text_vertex_s* vertices;
+  usize vertex_count;
+  u16* indices;
+  usize index_count;
+};
+
+bool wayc_text_mesh_init(struct text_mesh_s* mesh, const char* text,
+                         usize text_len, struct font_s* font);
+void wayc_text_mesh_deinit(struct text_mesh_s* mesh);