def _make_drawn_rect(points, surface):
rect = surface.get_clip()
left = max(rect.left, min(p[0] for p in points))
right = min(rect.right, max(p[0] for p in points))
top = max(rect.top, min(p[1] for p in points))
bottom = min(rect.bottom, max(p[1] for p in points))
return Rect(left, top, right - left + 1, bottom - top + 1)
def _make_drawn_rect(points, surface):
rect = surface.get_clip()
left = max(rect.left, min(p[0] for p in points))
right = min(rect.right, max(p[0] for p in points))
top = max(rect.top, min(p[1] for p in points))
bottom = min(rect.bottom, max(p[1] for p in points))
return Rect(left, top, max(right - left + 1, 0), max(bottom - top + 1, 0))
def _clip_and_draw_line(surface, c_color, start, end):
# rect = surface.get_clip().inflate(-60, -60)
# start, end = _clipline(rect, start, end)
start, end = _clipline(surface.get_clip(), start, end)
if start is None:
return False
_drawline(surface, c_color, start, end)
return True
def _clip_and_draw_line(surface, c_color, start, end):
# rect = surface.get_clip().inflate(-60, -60)
# start, end = _clipline(rect, start, end)
start, end = _clipline(surface.get_clip(), start, end)
if start is None:
return False
_drawline(surface, c_color, start, end)
return True
def DrawRoundRect(surface, color, rect, width, xr, yr):
clip = surface.get_clip()
surface.set_clip(clip.clip(rect.inflate(0, -yr*2)))
pygame.draw.rect(surface, color, rect.inflate(1-width,0), width)
surface.set_clip(clip.clip(rect.inflate(-xr*2, 0)))
pygame.draw.rect(surface, color, rect.inflate(0,1-width), width)
surface.set_clip(clip.clip(rect.left, rect.top, xr, yr))
pygame.draw.ellipse(surface, color, pygame.Rect(rect.left, rect.top, 2*xr, 2*yr), width)
surface.set_clip(clip.clip(rect.right-xr, rect.top, xr, yr))
pygame.draw.ellipse(surface, color, pygame.Rect(rect.right-2*xr, rect.top, 2*xr, 2*yr), width)
surface.set_clip(clip.clip(rect.left, rect.bottom-yr, xr, yr))
pygame.draw.ellipse(surface, color, pygame.Rect(rect.left, rect.bottom-2*yr, 2*xr, 2*yr), width)
surface.set_clip(clip.clip(rect.right-xr, rect.bottom-yr, xr, yr))
pygame.draw.ellipse(surface, color, pygame.Rect(rect.right-2*xr, rect.bottom-2*yr, 2*xr, 2*yr), width)
surface.set_clip(clip)
def _draw_fillpoly(surface, points, c_color):
# Very traditional scanline fill approach
# (also the approach used by pygame)
ys = [p[1] for p in points]
miny = min(ys)
maxy = max(ys)
times = []
# For speed reasons, we integrate clipping into the calculations,
# rather than calling _clip_and_draw_line
clip_rect = surface.get_clip()
all_points = list(zip(points, points[-1:] + points[:-1]))
for y in range(miny, maxy + 1):
if y < clip_rect.top or y >= clip_rect.bottom:
continue
intercepts = []
for p1, p2 in all_points:
if p1[1] == p2[1]:
# Edge of the polygon, so skip (due to division by 0)
continue
elif p1[1] < p2[1]:
x1, y1 = p1
x2, y2 = p2
else:
x1, y1 = p2
x2, y2 = p1
if not (y1 <= y < y2) and not (y == maxy and y1 < y <= y2):
continue
# XXX: Here be dragons with very sharp teeth
# C99 specifies truncates integer division towards zero always,
# python integer division takes the floor, so they differ
# on negatives
numerator = (y - y1) * (x2 - x1)
if numerator < 0:
# N.B. order matters - force the postive division before
# multiplication by -1
x = -1 * (-numerator // (y2 - y1)) + x1
else:
x = numerator // (y2 - y1) + x1
# This works because we're drawing horizontal lines
if x < clip_rect.left:
x = clip_rect.left
elif x >= clip_rect.right:
x = clip_rect.right - 1
intercepts.append(x)
intercepts.sort()
for x1, x2 in zip(intercepts[::2], intercepts[1::2]):
_drawhorizline(surface, c_color, x1, x2, y)
def _draw_fillpoly(surface, points, c_color):
# Very traditional scanline fill approach
# (also the approach used by pygame)
ys = [p[1] for p in points]
miny = min(ys)
maxy = max(ys)
times = []
# For speed reasons, we integrate clipping into the calculations,
# rather than calling _clip_and_draw_line
clip_rect = surface.get_clip()
all_points = zip(points, points[-1:] + points[:-1])
for y in range(miny, maxy + 1):
if y < clip_rect.top or y >= clip_rect.bottom:
continue
intercepts = []
for p1, p2 in all_points:
if p1[1] == p2[1]:
# Edge of the polygon, so skip (due to division by 0)
continue
elif p1[1] < p2[1]:
x1, y1 = p1
x2, y2 = p2
else:
x1, y1 = p2
x2, y2 = p1
if not (y1 <= y < y2) and not (y == maxy and y1 < y <= y2):
continue
# XXX: Here be dragons with very sharp teeth
# C99 specifies truncates integer division towards zero always,
# python integer division takes the floor, so they differ
# on negatives
numerator = (y - y1) * (x2 - x1)
if numerator < 0:
# N.B. order matters - force the postive division before
# multiplication by -1
x = -1 * (-numerator / (y2 - y1)) + x1
else:
x = numerator / (y2 - y1) + x1
# This works because we're drawing horizontal lines
if x < clip_rect.left:
x = clip_rect.left
elif x >= clip_rect.right:
x = clip_rect.right - 1
intercepts.append(x)
intercepts.sort()
for x1, x2 in zip(intercepts[::2], intercepts[1::2]):
_drawhorizline(surface, c_color, x1, x2, y)
def _check_special_ellipse(surface, c_x, c_y, radius_x, radius_y, c_color):
if radius_x == 0 and radius_y == 0:
clip = surface.get_clip()
# Throw away points outside the clip area
if c_x < clip.x or c_x >= (clip.x + clip.w):
return True
if c_y < clip.y or c_y >= (clip.y + clip.h):
return True
with locked(surface._c_surface):
surface._set_at(c_x, c_y, c_color)
return True
elif radius_x == 0:
# vertical line
_drawvertline(surface, c_color, c_y - radius_y, c_y + radius_y, c_x)
return True
elif radius_y == 0:
_drawhorizline(surface, c_color, c_x - radius_x, c_x + radius_x, c_y)
return True
return False
def _check_special_ellipse(surface, c_x, c_y, radius_x, radius_y, c_color):
if radius_x == 0 and radius_y == 0:
clip = surface.get_clip()
# Throw away points outside the clip area
if c_x < clip.x or c_x > (clip.x + clip.w):
return True
if c_y < clip.y or c_y > (clip.y + clip.h):
return True
with locked(surface._c_surface):
surface._set_at(c_x, c_y, c_color)
return True
elif radius_x == 0:
# vertical line
_drawvertline(surface, c_color, c_y - radius_y, c_y + radius_y, c_x)
return True
elif radius_y == 0:
_drawhorizline(surface, c_color, c_x - radius_x, c_x + radius_x, c_y)
return True
return False
def DrawRoundRect(surface, color, rect, width, xr, yr):
clip = surface.get_clip()
surface.set_clip(clip.clip(rect.inflate(0, -yr * 2)))
pygame.draw.rect(surface, color, rect.inflate(1 - width, 0), width)
surface.set_clip(clip.clip(rect.inflate(-xr * 2, 0)))
pygame.draw.rect(surface, color, rect.inflate(0, 1 - width), width)
surface.set_clip(clip.clip(rect.left, rect.top, xr, yr))
pygame.draw.ellipse(surface, color,
pygame.Rect(rect.left, rect.top, 2 * xr, 2 * yr),
width)
surface.set_clip(clip.clip(rect.right - xr, rect.top, xr, yr))
pygame.draw.ellipse(
surface, color,
pygame.Rect(rect.right - 2 * xr, rect.top, 2 * xr, 2 * yr), width)
surface.set_clip(clip.clip(rect.left, rect.bottom - yr, xr, yr))
pygame.draw.ellipse(
surface, color,
pygame.Rect(rect.left, rect.bottom - 2 * yr, 2 * xr, 2 * yr), width)
surface.set_clip(clip.clip(rect.right - xr, rect.bottom - yr, xr, yr))
pygame.draw.ellipse(
surface, color,
pygame.Rect(rect.right - 2 * xr, rect.bottom - 2 * yr, 2 * xr, 2 * yr),
width)
surface.set_clip(clip)
