diff options
| -rw-r--r-- | draw/draw.go | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/draw/draw.go b/draw/draw.go index a5d5f0d..f6586ca 100644 --- a/draw/draw.go +++ b/draw/draw.go @@ -35,24 +35,29 @@ func saveImage(dc *gg.Context, path string) { // drawStar draws the given stars to the given context func drawStar(dc *gg.Context, star structs.Star2D) { + // User the value below to controll how big the stars are overall + var StarScalingFactor float64 = 1 - // set radius of the star to 2 - R := 2.0 + // Default Star Size + S := 2.0 - // if the star has a greater mass than the default 5E4, it's radius is increased to 5 - if star.M > 5E4 { - R = 5 + // Calculate the Stars Size according to its Mass (Maximal size = 5) + if star.M < 5e4 { + S = float64(math.Ceil(star.M/4e4) * StarScalingFactor) + } else { + S = 5.0 } // draw the star / point - dc.DrawPoint(star.C.X/50, star.C.Y/50, R) + dc.DrawPoint(star.C.X/50, star.C.Y/50, S) dc.Fill() dc.Stroke() } func drawVelocity(dc *gg.Context, star structs.Star2D) { // scaling factor for a better view of the velocity difference - var scalingFactor float64 = 15 + // Use this value to control how long the vectors are drawn + var scalingFactor float64 = 25 // Move the "cursor" to the start position of the vector dc.MoveTo(star.C.X/50, star.C.Y/50) |
