SATProjection GetInterval(const std::vector<float2> &vertices, const float2 &axis)
{
if(!vertices.size()) return SATProjection();
SATProjection proj;
proj.min = proj.max = vertices[0].dot(axis);
for(u32 i=1;i<vertices.size();++i)
{
f32 d = vertices[i].dot(axis);
proj.min = min(d, proj.min);
proj.max = max(d, proj.max);
}
return proj;
};
SATProjection getProjection(sf::Vector2f normal, Entity* const entity)
{
double min = dotProduct(normal, entity->getVertexGlobalPosition(0));
double max = min;
for (int i(1); i < entity->getVertexCount(); ++i)
{//project each vertex of the shape onto the normal
//then calculate the maximum and minimum values in the array and return those
//as a projection
double dp = dotProduct(normal, entity->getVertexGlobalPosition(i));
if (dp < min)
min = dp;
else if (dp > max)
max = dp;
}
return(SATProjection(min, max));
}
