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Line Strips

A line strip is a primitive that is composed of connected line segments. Your application can use line strips for creating polygons that are not closed. A closed polygon is a polygon whose last vertex is connected to its first vertex by a line segment. If your application makes polygons based on line strips, the vertices are not guaranteed to be coplanar.

The following illustration shows a rendered line strip.

Illustration of a line strip

The following code shows how to create vertices for this line strip.

	float x,y,z;

CUSTOMVERTEX Vertices[] = 
	{-5.0, -5.0, 0.0},
	{ 0.0,  5.0, 0.0},
	{ 5.0, -5.0, 0.0},
	{10.0,  5.0, 0.0},
	{15.0, -5.0, 0.0},
	{20.0,  5.0, 0.0}

The code example below shows how to render a line strip in Direct3D 9 using IDirect3DDevice9::DrawPrimitive .

// It is assumed that d3dDevice is a valid
// pointer to a IDirect3DDevice9 interface.
d3dDevice->DrawPrimitive( D3DPT_LINESTRIP, 0, 5 );



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