protected override void Draw(List <GizmoPoint> gizmoData)
{
if (gizmoData.Count == 0)
{
return;
}
if (data.Length < gizmoData.Count * 3)
{
Array.Resize(ref data, gizmoData.Count * 3);
}
int dataIndex = 0;
for (int i = 0; i < gizmoData.Count; i++)
{
GizmoPoint gizmo = gizmoData[i];
data[dataIndex++] = gizmo.Point.x;
data[dataIndex++] = gizmo.Point.y;
data[dataIndex++] = gizmo.Point.z;
}
//VBO config
Ogl.BindBuffer(BufferTarget.ArrayBuffer, vbo);
Ogl.BufferData(BufferTarget.ArrayBuffer, sizeof(float) * dataIndex, data, BufferUsageHint.StreamDraw);
//VAO config
Ogl.BindVertexArray(vao);
Ogl.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, sizeof(float) * 3, 0);
Ogl.EnableVertexAttribArray(0);
Ogl.DrawArray(PrimitiveType.Points, 0, gizmoData.Count);
}