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private static InsideTriangle ( |
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| a | The A point. | |
| b | The B point. | |
| c | The C point. | |
| p | The point to be tested. | |
| return | bool | |
private static bool InsideTriangle(ref Vector2 a, ref Vector2 b, ref Vector2 c, ref Vector2 p)
{
//A cross bp
float abp = (c.X - b.X) * (p.Y - b.Y) - (c.Y - b.Y) * (p.X - b.X);
//A cross ap
float aap = (b.X - a.X) * (p.Y - a.Y) - (b.Y - a.Y) * (p.X - a.X);
//b cross cp
float bcp = (a.X - c.X) * (p.Y - c.Y) - (a.Y - c.Y) * (p.X - c.X);
return ((abp >= 0.0f) && (bcp >= 0.0f) && (aap >= 0.0f));
}