# d3d_primitive_begin

## Begins the process of defining a primitive in
3D.

### Syntax:

d3d_primitive_begin(kind)

Argument |
Description |

kind |
The kind of primitive you are going to draw. |

**Returns:** N/A

### Description

This function must be called before you can define any
primitives. There are 6 types of primitives you can define with the
following constants:

**pr_pointlist**
**pr_linelist**
**pr_linestrip**
**pr_trianglelist**
**pr_trianglestrip**
**pr_trianglefan** (This is not available on the HTML5
target platform and may not work correctly on some devices for
other platforms)

The following image illustrates basically how these should look
and also the order in which you should define the vertexes:

### Example:

d3d_primitive_begin(pr_trianglelist);

d3d_vertex(100, 100, 0);

d3d_vertex(100, 200, 0);

d3d_vertex(150, 150, 200);

d3d_vertex(100, 200, 0);

d3d_vertex(200, 200, 0);

d3d_vertex(150, 150, 200);

d3d_vertex(200, 200, 0);

d3d_vertex(100, 100, 0);

d3d_vertex(150, 150, 200);

d3d_vertex(100, 100, 0);

d3d_vertex(100, 200, 0);

d3d_vertex(200, 200, 0);

d3d_primitive_end();

The above code will draw a tetrahedron standing on the z=0 plane
with its top at z = 200.

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