def draw(self):
with self.style:
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
old_matrix = VG.get_matrix()
VG.translate(*self.body.position)
VG.rotate(math.degrees(self.body.angle))
self.path.draw(VG_STROKE_PATH)
VG.load_matrix(old_matrix)
def draw(self):
mat = VG.get_matrix()
VG.translate(*self.chassis.body.position)
VG.rotate(math.degrees(self.chassis.body.angle))
## self.chassis_path.draw(VG_STROKE_PATH | VG_FILL_PATH)
VG.load_matrix(mat)
p = VG.Path()
points = self.chassis.get_points()
p.move_to(points[0]+self.chassis.offset)
for point in points[1:]:
p.move_to(point+self.chassis.offset)
p.close()
p.style = VG.Style(fill_paint=VG.ColorPaint((1.0, 0.0,0.0)))
p.draw(VG_FILL_PATH)
VG.load_matrix(mat)
VG.translate(*self.wheel1.body.position)
VG.rotate(math.degrees(self.wheel1.body.angle))
self.wheel_path.draw(VG_STROKE_PATH | VG_FILL_PATH)
VG.load_matrix(mat)
VG.translate(*self.wheel2.body.position)
VG.rotate(math.degrees(self.wheel2.body.angle))
self.wheel_path.draw(VG_STROKE_PATH | VG_FILL_PATH)
VG.load_matrix(mat)
def build_path(self, string, index, ctp):
ctp_x, ctp_y = ctp
path = VG.Path()
vertical = False
with VG.push([1,0,0,0,1,0,0,0,1]):
#TODO: vertical and bidi text.
last_glyph = None
for char in string:
ctp_x, ctp_y = self._transform(ctp_x, ctp_y, index)
glyph = self.font.get_glyph(char)
subpath = self.font.get_path_for_glyph(glyph)
#Flip it.
with VG.push([1,0,0,0,-1,0,0,0,1]):
subpath = subpath.transform()
VG.translate(ctp_x, ctp_y)
if self.font.face.has_kerning and last_glyph is not None:
kerning = self.font.face.get_kerning(last_glyph.index,
glyph.index,
FT_KERNING_UNSCALED)
VG.translate(self.font.scale*kerning[0],
self.font.scale*kerning[1])
ctp_x += self.font.scale*kerning[0]
ctp_y += self.font.scale*kerning[1]
if index < len(self.trot)-1:
VG.translate(ctp_x, ctp_y)
VG.rotate(self.rotate[index])
VG.translate(-ctp_x, -ctp_y)
last_glyph = glyph
subpath.transform(path)
ctp_x += self.font.scale*glyph.advance[0]
ctp_y += self.font.scale*glyph.advance[1]*vertical
VG.load_matrix([1,0,0,0,1,0,0,0,1])
return path, ctp
def rotate_about(p, angle):
VG.translate(p[0], p[1])
VG.rotate(angle)
VG.translate(-p[0], -p[1])
def main(width, height):
pygame.init()
pygame.display.gl_set_attribute(pygame.GL_STENCIL_SIZE, 2)
pygame.display.gl_set_attribute(pygame.GL_MULTISAMPLEBUFFERS, 1)
pygame.display.gl_set_attribute(pygame.GL_MULTISAMPLESAMPLES, 4)
screen = pygame.display.set_mode((width, height), pygame.OPENGL | pygame.DOUBLEBUF)
pygame.display.set_caption("Flower test")
VG.create_context((width, height))
VG.set(VG_CLEAR_COLOR, (0.0, 0.0, 0.0, 1.0))
vera = Font("data/fonts/Vera.ttf", 32)
message = vera.build_path("Hold down LMB to create flowers")
message.style = VG.Style(fill_paint=VG.ColorPaint((1.0, 1.0, 1.0, 0.7)))
doc = parse_svg("data/svg/flower.svg")
flower = doc.getroot()
(x,y), (w,h) = flower.bounds()
cx,cy = x+w/2.0, y+h/2.0
particles = []
to_remove = []
clock = pygame.time.Clock()
dt = 0
running = True
while running:
for e in pygame.event.get():
if e.type == pygame.QUIT:
running = False
elif e.type == pygame.KEYDOWN:
if e.key == pygame.K_ESCAPE:
running = False
if pygame.mouse.get_pressed()[0]:
x,y = pygame.mouse.get_pos()
m = random.randint(-60, 60)
angle = random.randint(0,359)
pos = (x-cx, height-y-cy)
vel = (m*math.cos(math.radians(angle)),
m*math.sin(math.radians(angle)))
rot = random.randint(-30, 30)
scale = random.randint(8, 12)/10.0
particles.append([pos, vel, random.randint(0,359), rot, scale])
VG.clear((0,0), (width, height))
for particle in particles:
VG.load_identity()
pos, vel, angle, rot, scale = particle
VG.translate(pos[0]+cx, pos[1]+cy)
VG.scale(scale, scale)
VG.rotate(angle)
VG.translate(-cx, -cy)
flower.draw()
particle[0] = (pos[0]+vel[0]*dt/1000.0,pos[1]+vel[1]*dt/1000.0)
particle[2] += rot * dt/1000.0
if particle[0][0] + w < 0 or particle[0][1] + h < 0:
to_remove.append(particle)
elif particle[0][0] - w > width or particle[0][1] - h > height:
to_remove.append(particle)
particles = [particle for particle in particles if particle not in to_remove]
del to_remove[:]
VG.load_identity()
message.draw(VG_FILL_PATH)
dt = clock.tick(30)
pygame.display.flip()
def render(self):
if pe.vg_mode == 1:
smack = 1 / 2048.0
glScale(smack, smack, 1.0)
# VG.set(VG_STROKE_JOIN_STYLE, VG_JOIN_ROUND)
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
VG.load_identity()
VG.scale(1.0 / smack, 1.0 / smack)
p = VG.Path()
p.move_to((0, 0))
VG.set(VG_STROKE_LINE_WIDTH, 0.01)
# VGU.rect(p, (0,0), (pe.q1,pe.q2))
# VGU.rect(p, (0,0), (x,y))
# VGU.arc(p, (0,0), (pe.q1,pe.q2),
# 0, 2*pi,
# 0xF100)
# VGU.arc(p, (0,0), (.5,.5), 0, 90, 0xF100)
# r = pe.q1
# p.move_to((0,r))
# p.arc_to((r,0), r, r, 0, False, False)
# paint = VG.ColorPaint((0.0, 1.0, 1.0, 1.0))
# VG.set_paint(paint, VG_STROKE_PATH)
# p.draw(VG_STROKE_PATH);
# self.wheel(NUM_SEGMENTS, DUTY_CYCLE, OUTER_RADIUS, INNER_RADIUS, LINE_WIDTH,
# 0, 1, 1)
RADIUS = 0.2 * (sin(pe.time) + 1.0) / 2.0 * 3.0
COUNT = 10
SIZE = 0.2
BIAS = pe.time / COUNT * 2 * pi
for i in range(0, COUNT):
saved = VG.get_matrix()
angle = 2 * pi * (float(i) / COUNT) + BIAS
VG.translate(RADIUS * cos(angle), RADIUS * sin(angle))
VG.scale(SIZE, SIZE)
VG.rotate(pe.time * 2 * pi * 10.0 + float(i) / COUNT * 2 * pi * 2.0)
self.wheel(5, DUTY_CYCLE, OUTER_RADIUS, INNER_RADIUS, LINE_WIDTH, float(COUNT), 1, 1)
VG.load_matrix(saved)
return
GRID_X = 5
GRID_Y = 5
idx = 0
seed(int(pe.time))
step = pe.time - int(pe.time)
phase = sin(step * pi)
for j in range(0, GRID_Y):
for i in range(0, GRID_X):
saved = VG.get_matrix()
VG.translate((i + 0.5) / GRID_X * 2 - 1, (j + 0.5) / GRID_Y * 2 - 1)
VG.scale(2.0 / GRID_X, 2.0 / GRID_Y)
# if random() < .1:
# VG.scale(1.0+phase,1.0+phase)
VG.scale(pe.bass + 1.0, pe.treb + 1.0)
VG.rotate(float(i) / GRID_X * 360.0 * pe.time)
# awesome
# VG.translate(sin(pe.time+i/GRID_Y),0)
segments = min(j + 1, GRID_Y - j)
flag = True if ((j + 2) % (i + 2)) and ((i + 2) % (j + 2)) else False
self.wheel(
segments,
DUTY_CYCLE,
OUTER_RADIUS,
INNER_RADIUS,
LINE_WIDTH,
float(i) / GRID_X,
sin(float(i) / GRID_X * pi) + sin(pe.time) * 2 * pi,
1,
)
VG.load_matrix(saved)
