/// <summary>
/// Specify which elements shall be drawn by indexing them, specifying an offset and the number of elements.
/// </summary>
/// <param name="vao">
/// The <see cref="VertexArrayObject"/> to which this element belongs to.
/// </param>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how elements are interpreted.
/// </param>
protected Element(VertexArrayObject vao, PrimitiveType mode)
{
if (vao == null)
throw new ArgumentNullException("vao");
_VertexArrayObject = vao;
ElementsMode = mode;
}
private VertexArrayObject CreateVertexArray(NewtonVertex[] array, out ArrayBufferObjectBase interleavedArrayBuffer)
{
VertexArrayObject newtonVertexArray = new VertexArrayObject();
ArrayBufferObjectInterleaved newtonVertexArrayBuffer = new ArrayBufferObjectInterleaved(typeof(NewtonVertex), BufferObjectHint.DynamicGpuDraw);
if (array != null)
newtonVertexArrayBuffer.Create(array);
else
newtonVertexArrayBuffer.Create(VertexCount);
newtonVertexArray.SetArray(newtonVertexArrayBuffer, 0, VertexArraySemantic.Position);
newtonVertexArray.SetArray(newtonVertexArrayBuffer, 1, VertexArraySemantic.Speed);
newtonVertexArray.SetArray(newtonVertexArrayBuffer, 2, VertexArraySemantic.Acceleration);
newtonVertexArray.SetArray(newtonVertexArrayBuffer, 3, VertexArraySemantic.Mass);
newtonVertexArray.SetElementArray(PrimitiveType.Points);
interleavedArrayBuffer = newtonVertexArrayBuffer;
return (newtonVertexArray);
}
/// <summary>
/// Specify which elements shall be drawn by indexing them, specifying an offset and the number of element indices.
/// </summary>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <param name="indices">
/// A <see cref="ElementBufferObject"/> containing the indices of the drawn vertices.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="indices"/> is null.
/// </exception>
/// <remarks>
/// The element indices count is implictly defined by <paramref name="indices"/> at <see cref="Draw(GraphicsContext)"/>
/// execution time.
/// </remarks>
public IndexedElement(VertexArrayObject vao, PrimitiveType mode, ElementBufferObject indices) :
this(vao, mode, indices, 0, 0)
{
}
/// <summary>
/// Specify which elements shall be drawn, specifying an offset and the number of elements.
/// </summary>
/// <param name="vao">
/// The <see cref="VertexArrayObject"/> to which this element belongs to.
/// </param>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <param name="offsets">
/// A <see cref="Int32[]"/> that specify the offset applied to the drawn array elements.
/// </param>
/// <param name="counts">
/// A <see cref="Int32[]"/> that specify the number of array elements drawn.
/// </param>
public MultiArrayElement(VertexArrayObject vao, PrimitiveType mode, int[] offsets, int[] counts) :
base(vao, mode)
{
if (offsets == null)
throw new ArgumentNullException("offset");
if (counts == null)
throw new ArgumentNullException("count");
if (offsets.Length == 0)
throw new ArgumentException("invalid size", "offset");
if (counts.Length != offsets.Length)
throw new ArgumentException("no mtaching length with offsets", "count");
ArrayOffsets = offsets;
ArrayCounts = counts;
}
/// <summary>
/// Specify which elements shall be drawn by indexing them, specifying an offset and the number of element indices.
/// </summary>
/// <param name="vao">
/// The <see cref="VertexArrayObject"/> to which this element belongs to.
/// </param>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <param name="indices">
/// A <see cref="ElementBufferObject"/> containing the indices of the drawn vertices.
/// </param>
/// <param name="offset">
/// A <see cref="UInt32"/> that specify the offset applied to the drawn elements indices.
/// </param>
/// <param name="count">
/// A <see cref="UInt32"/> that specify the number of element indices drawn.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="indices"/> is null.
/// </exception>
public IndexedElement(VertexArrayObject vao, PrimitiveType mode, ElementBufferObject indices, uint offset, uint count) :
base(vao, mode, offset, count)
{
if (indices == null)
throw new ArgumentNullException("indices");
ArrayIndices = indices;
ArrayIndices.IncRef();
}
/// <summary>
/// Specify which elements shall be drawn.
/// </summary>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <remarks>
/// The array elements count is implictly defined as the vertex array length at <see cref="Draw(GraphicsContext)"/>
/// execution time.
/// </remarks>
public ArrayElement(VertexArrayObject vao, PrimitiveType mode) :
this(vao, mode, 0, 0)
{
}
/// <summary>
/// Specify which elements shall be drawn, specifying an offset and the number of elements.
/// </summary>
/// <param name="vao">
/// The <see cref="VertexArrayObject"/> to which this element belongs to.
/// </param>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <param name="offset">
/// A <see cref="UInt32"/> that specify the offset applied to the drawn array elements.
/// </param>
/// <param name="count">
/// A <see cref="UInt32"/> that specify the number of array elements drawn.
/// </param>
public ArrayElement(VertexArrayObject vao, PrimitiveType mode, uint offset, uint count) :
base(vao, mode)
{
ElementOffset = offset;
ElementCount = count;
}
/// <summary>
/// Specify which elements shall be drawn by indexing them, specifying an offset and the number of element indices.
/// </summary>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <param name="indices">
/// A <see cref="ElementBufferObject"/> containing the indices of the drawn vertices.
/// </param>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="indices"/> is null.
/// </exception>
/// <remarks>
/// The element indices count is implictly defined by <paramref name="indices"/> at <see cref="Draw(GraphicsContext)"/>
/// execution time.
/// </remarks>
public IndexedElement(VertexArrayObject vao, PrimitiveType mode, ElementBufferObject indices) :
this(vao, mode, indices, 0, 0)
{
}
/// <summary>
/// Specify which elements shall be drawn.
/// </summary>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <remarks>
/// The array elements count is implictly defined as the vertex array length at <see cref="Draw(GraphicsContext)"/>
/// execution time.
/// </remarks>
public ArrayElement(VertexArrayObject vao, PrimitiveType mode) :
this(vao, mode, 0, 0)
{
}
/// <summary>
/// Specify which elements shall be drawn, specifying an offset and the number of elements.
/// </summary>
/// <param name="vao">
/// The <see cref="VertexArrayObject"/> to which this element belongs to.
/// </param>
/// <param name="mode">
/// A <see cref="PrimitiveType"/> that indicates how array elements are interpreted.
/// </param>
/// <param name="offset">
/// A <see cref="UInt32"/> that specify the offset applied to the drawn array elements.
/// </param>
/// <param name="count">
/// A <see cref="UInt32"/> that specify the number of array elements drawn.
/// </param>
public ArrayElement(VertexArrayObject vao, PrimitiveType mode, uint offset, uint count) :
base(vao, mode)
{
ElementOffset = offset;
ElementCount = count;
}