Points in a world rectangle

Making a grid of points! I'm using little triangles to display the points. I don't want the points to be too close to each other, so if I ask the page to place a new point and it randomly picks a point too close, it won't and will tell me off! 8-P
Then I will want to make a triangle mesh and subdivide the triangles along sea level. If all three corners are at or below sea level, then the triangle is blue, otherwise it's green or tan for land.