Projection of a point over a cone shape

I have the two bodies(L_CR and S_CR) having geometry in the form of point cloud. Information of point cloud is attached Two plot them I have used following code plot3(S_CR(1,:), S_CR(2,:), S_CR(3,:), '*', 'Color','y'); %axis([-1 1 -1 1 -1 1]); pause; hold on; plot3(L_CR(1,:), L_CR(2,:), L_CR(3,:), '*', 'Color','b'); hold on; pause;

What I want to actually that take one by one point of body S_CR and project that point over another body L_CR over a conical shape such that the point on S_CR is on the top of the cone and base circle of that cone lying on L_CR. Then Found the no of points in the Body L_CR which will lying inside the base circle of that cone.