archivemuh

archive/dusksdl2/display/mesh/mesh.h

@@ -0,0 +1,58 @@
+// Copyright (c) 2025 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#pragma once
+#include "dusksdl2.h"
+
+#define MESH_VERTEX_COLOR_SIZE 4
+#define MESH_VERTEX_UV_SIZE 2
+#define MESH_VERTEX_POS_SIZE 3
+
+typedef struct {
+  GLubyte color[MESH_VERTEX_COLOR_SIZE];
+  GLfloat uv[MESH_VERTEX_UV_SIZE];
+  GLfloat pos[MESH_VERTEX_POS_SIZE];
+} meshvertex_t;
+
+typedef struct {
+  const meshvertex_t *vertices;
+  int32_t vertexCount;
+  GLenum primitiveType;
+} mesh_t;
+
+/**
+ * Initializes a mesh.
+ * 
+ * @param mesh The mesh to initialize.
+ * @param primitiveType The OpenGL primitive type (e.g., GL_TRIANGLES).
+ * @param vertexCount The number of vertices in the mesh.
+ * @param vertices The vertex data for the mesh.
+ */
+void meshInit(
+  mesh_t *mesh,
+  const GLenum primitiveType,
+  const int32_t vertexCount,
+  const meshvertex_t *vertices
+);
+
+/**
+ * Draws a mesh.
+ * 
+ * @param mesh The mesh to draw.
+ * @param vertexOffset The offset in the vertex array to start drawing from.
+ * @param vertexCount The number of vertices to draw. If -1, draws all vertices.
+ */
+void meshDraw(
+  const mesh_t *mesh,
+  const int32_t vertexOffset,
+  const int32_t vertexCount
+);
+
+/**
+ * Disposes a mesh.
+ * 
+ * @param mesh The mesh to dispose.
+ */
+void meshDispose(mesh_t *mesh);