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Draw separating lines

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Also reduce line thickness of shapes to 1
This commit is contained in:
Matt Low
2020-11-15 13:26:20 +04:00
parent 1d84976c99
commit 1662e2e4a9
1 changed files with 14 additions and 4 deletions
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18
geom/demos/sat.py
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@ -42,9 +42,19 @@ class SeparatingAxisTheorem:
if inputs[pygame.K_e]:
self.shape2.rotate((1/60) * 90)
def draw_axis(self, surface, normal, colliding, min1, max1, min2, max2):
def draw_axis(self, surface, normal, overlap, min1, max1, min2, max2):
offset = scale(*rnormal(*normal), 300)
colliding = overlap < 0
if not colliding:
# separating line
dist = scale(*normal,
(min1 if min1 > min2 else min2) - overlap * 0.5)
line(surface, BLUE,
add(*dist, *offset),
add(*dist, *scale(*lnormal(*normal), 1000)))
# axis
line(surface, WHITE,
add(*scale(*reverse(*normal), 1000), *offset),
@ -92,7 +102,7 @@ class SeparatingAxisTheorem:
overlap = max(min2 - max1, min1 - max2)
overlaps.append(overlap)
self.draw_axis(surface, normal, overlap < 0,
self.draw_axis(surface, normal, overlap,
min1, max1, min2, max2)
colliding = all(overlap < 0 for overlap in overlaps)
@ -100,5 +110,5 @@ class SeparatingAxisTheorem:
text_screen(surface, WHITE, (10, HEIGHT - 20),
f"Min Distance to Resolve: {max(overlaps)}")
self.shape1.draw(surface, YELLOW, 4)
self.shape2.draw(surface, RED if colliding else WHITE, 4)
self.shape1.draw(surface, YELLOW, 1)
self.shape2.draw(surface, RED if colliding else WHITE, 1)