def render(self):
smack = 1/2048.0
glScale(smack,smack,1.0)
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((-0.5,-0.5))
VG.set(VG_STROKE_LINE_WIDTH, .01)
pe.wave_a=0
pe.square_a=0
r = pe.mid
theta = pe.time
#VGU.round_rect(p, (-0.5,-0.5), (1,1), 1-pe.bass, 1-pe.bass)
p.quad_to((-r*cos(theta), r*sin(theta)), (0.5, -0.5))
p.quad_to((-r*cos(theta), r*sin(theta)), (0, 0.5))
p.quad_to((-r*cos(theta), r*sin(theta)), (-0.5, -0.5))
paint = VG.ColorPaint((pe.wave_r, pe.wave_g, pe.wave_b, 1.0))
VG.set_paint(paint, VG_STROKE_PATH)
paint = VG.ColorPaint((1-pe.wave_r, 1-pe.wave_g, 1-pe.wave_b, 1.0))
VG.set_paint(paint, VG_FILL_PATH)
p.draw(VG_FILL_PATH)
p.draw(VG_STROKE_PATH)
def render(self):
return
smack = 1/2048.0
glScale(smack,smack,1.0)
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
VG.load_identity()
VG.scale(1.0/smack, 1.0/smack)
# Create the path (a simple circle for now...)
p = VG.Path()
r = 0.1
VGU.ellipse(p, (pe.kaleidoscope_x,pe.kaleidoscope_y), (r,r))
# Set up the drawing and painting parameters
pe.vg_stroke_r = 0.5 + 0.35 * math.sin(7/10.0*pe.time)
pe.vg_stroke_g = 0.5 + 0.35 * math.sin(11/10.0*pe.time)
pe.vg_stroke_g = 0.5 + 0.35 * math.sin(13/10.0*pe.time)
pe.vg_stroke_a = 1.0;
pe.vg_fill_r = 1.0 - pe.vg_stroke_r
pe.vg_fill_g = 1.0 - pe.vg_stroke_g
pe.vg_fill_g = 1.0 - pe.vg_stroke_b
VG.set(VG_STROKE_LINE_WIDTH, pe.vg_stroke_thickness)
paint = VG.ColorPaint((pe.vg_stroke_r, pe.vg_stroke_g,
pe.vg_stroke_b, pe.vg_stroke_a))
VG.set_paint(paint, VG_STROKE_PATH)
paint = VG.ColorPaint((pe.vg_fill_r, pe.vg_fill_g,
pe.vg_fill_b, pe.vg_fill_a))
VG.set_paint(paint, VG_FILL_PATH)
p.draw(VG_FILL_PATH)
p.draw(VG_STROKE_PATH)
def render_bg_old(self):
smack = 1/2048.0
glScale(smack,smack,1.0)
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
VG.load_identity()
VG.scale(1.0/smack, 1.0/smack)
here = -1
idx = 0
while here < 1:
width = random()*.2*3
p = VG.Path()
p.move_to((-5,here+width/2))
p.line_to((5,here+width/2 + random()*.1))
v = random()
VG.set(VG_STROKE_LINE_WIDTH, width)
paint = VG.ColorPaint((0.0, 0.0, 0.0, 1.0))
VG.set_paint(paint, VG_STROKE_PATH)
p.draw(VG_STROKE_PATH)
VG.set(VG_STROKE_LINE_WIDTH, width*.85)
paint = VG.ColorPaint((v, v, v, 1.0))
VG.set_paint(paint, VG_STROKE_PATH)
p.draw(VG_STROKE_PATH)
here += width
def main(width, height):
pygame.init()
pygame.display.gl_set_attribute(pygame.GL_STENCIL_SIZE, 2)
srf = pygame.display.set_mode((width, height), pygame.OPENGL | pygame.DOUBLEBUF)
pygame.display.set_caption("Rainbow Gradient Test")
VG.create_context((width, height))
VG.set(VG_CLEAR_COLOR, (1.0, 1.0, 1.0, 1.0))
canvas = VG.Path(capabilities=VG_PATH_CAPABILITY_APPEND_TO)
VGU.rect(canvas, (0, 0), (width, height))
rgb_gradient = VG.GradientPaint([(0,0), (width,0)], linear=True)
rgb_gradient.spread_mode = VG_COLOR_RAMP_SPREAD_REFLECT
rgb_gradient.stops = generate_rgb_stops(7)
alpha_stops = [(0.0, (0.0, 0.0, 0.0, 0.0)),
(1.0, (1.0, 1.0, 1.0, 1.0))]
alpha_gradient = VG.GradientPaint([(0,0), (0,height)], linear=True)
alpha_gradient.spread_mode = VG_COLOR_RAMP_SPREAD_REFLECT
alpha_gradient.stops = alpha_stops
n = 7
running = True
while running:
events = pygame.event.get()
for e in events:
if e.type == pygame.QUIT:
running = False
elif e.type == pygame.KEYDOWN:
if e.key == pygame.K_ESCAPE:
running = False
elif e.type == pygame.MOUSEBUTTONDOWN:
if e.button == 4:
n += 1
rgb_gradient.stops = generate_rgb_stops(n)
elif e.button == 5:
if n > 2:
n -= 1
rgb_gradient.stops = generate_rgb_stops(n)
VG.clear((0, 0), (640, 480))
VG.set_paint(rgb_gradient, VG_FILL_PATH)
canvas.draw(VG_FILL_PATH)
VG.set_paint(alpha_gradient, VG_FILL_PATH)
canvas.draw(VG_FILL_PATH)
pygame.display.flip()
def main(width, height):
pygame.init()
pygame.display.gl_set_attribute(pygame.GL_STENCIL_SIZE, 2)
srf = pygame.display.set_mode((width, height), pygame.OPENGL | pygame.DOUBLEBUF)
pygame.display.set_caption("Polyline test")
VG.create_context((width, height))
VG.set(VG_CLEAR_COLOR, (1.0, 1.0, 1.0, 1.0))
polyline = VG.Path()
stroke_paint = VG.ColorPaint((0.5, 0.2, 0.8, 0.6))
VG.set_paint(stroke_paint, VG_STROKE_PATH)
fill_paint = VG.ColorPaint((0.3, 1.0, 0.0, 0.6))
VG.set_paint(fill_paint, VG_FILL_PATH)
polyline.style = VG.Style(VG_STROKE_LINE_WIDTH = 4.0,
VG_STROKE_JOIN_STYLE = VG_JOIN_MITER,
VG_STROKE_CAP_STYLE = VG_CAP_ROUND)
print "Usage"
print "Left click: LINE_TO"
print "Right click: MOVE_TO"
running = True
first_click = True
while running:
events = pygame.event.get()
for e in events:
if e.type == pygame.QUIT:
running = False
elif e.type == pygame.KEYDOWN:
if e.key == pygame.K_ESCAPE:
running = False
elif e.type == pygame.MOUSEBUTTONDOWN:
if e.button == 1: #left button
if first_click:
polyline.move_to((e.pos[0], height-e.pos[1]), rel=False)
first_click = False
else:
polyline.line_to((e.pos[0], height-e.pos[1]), rel=False)
elif e.button == 3:#right button
polyline.move_to((e.pos[0], height-e.pos[1]), rel=False)
VG.clear((0, 0), (width, height))
polyline.draw(VG_STROKE_PATH)
pygame.display.flip()
def draw(self):
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))
old_paint = VG.get_paint(VG_FILL_PATH)
VG.set_paint(self.fill_paint, VG_FILL_PATH)
with self.style:
self.path.draw(VG_STROKE_PATH | VG_FILL_PATH)
VG.set_paint(old_paint, VG_FILL_PATH)
VG.load_matrix(old_matrix)
def render(self):
if (pe.square_a != 0.0 and pe.vg_mode == 3):
VG.set(VG_STROKE_LINE_WIDTH, 15.0)
fill_paint = VG.ColorPaint((pe.square_r, pe.square_g, pe.square_b, pe.square_a))
stroke_paint = VG.ColorPaint(( 0.65 + 0.350*( 0.60*math.sin(0.742*pe.time) +
0.40*math.sin(1.021*pe.time) ),
0.65 + 0.350*( 0.60*math.sin(0.703*pe.time) +
0.40*math.sin(0.969*pe.time) ),
0.65 + 0.350*( 0.60*math.sin(1.090*pe.time) +
0.40*math.sin(0.963*pe.time) ),
pe.square_a))
VG.set_paint(fill_paint, VG_FILL_PATH)
VG.set_paint(stroke_paint, VG_STROKE_PATH)
p = VG.Path(capabilities=VG_PATH_CAPABILITY_APPEND_TO)
vx=self.vr*math.cos(self.vt)
vy=self.vr*math.sin(self.vt)
p.move_to((self.x,self.y))
self.x+=vx
self.y+=vy
p.line_to((self.x,self.y))
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
VG.load_identity()
VG.scale(0.001, 0.001)
p.draw(VG_STROKE_PATH);
if random()<.01:
self.at = 0
if self.x<-1000 or self.x>1000 or self.y<-1000 or self.y>1000:
self.x=0
self.y=0
self.vt += (random()-.5)*.1
self.vt += self.at
self.at += (random()-.5)*.1
def main():
pygame.init()
pygame.display.gl_set_attribute(pygame.GL_STENCIL_SIZE, 2)
srf = pygame.display.set_mode((640,480), pygame.OPENGL | pygame.DOUBLEBUF)
pygame.display.set_caption("Paint test")
VG.create_context((640, 480))
VG.set(VG_CLEAR_COLOR, (1.0, 1.0, 1.0, 1.0))
VG.set(VG_STROKE_LINE_WIDTH, 3.0)
p = VG.Path(capabilities=VG_PATH_CAPABILITY_APPEND_TO)
VGU.ellipse(p, (0, 0), (64*2,64*2))
solid_paint = VG.ColorPaint((1.0, 0.0, 1.0))
stops = [(0.0,(1.0,1.0,1.0,1.0)), (0.333,(1.0,0.0,0.0,1.0)), (0.666,(0.0,1.0,0.0,1.0)), (1.0,(0.0,0.0,1.0,1.0))]
linear_gradient = [(-60,0), (60,0)]
linear_paint = VG.GradientPaint(linear_gradient, linear=True)
linear_paint.spread_mode = VG_COLOR_RAMP_SPREAD_REFLECT
linear_paint.stops = stops
radial_gradient = [(0,0), (0,0), 64]
radial_paint = VG.GradientPaint(radial_gradient, linear=False)
radial_paint.stops = stops
running = True
while running:
events = pygame.event.get()
for e in events:
if e.type == pygame.QUIT:
running = False
elif e.type == pygame.KEYDOWN:
if e.key == pygame.K_ESCAPE:
running = False
VG.clear((0, 0), (640, 480))
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
VG.load_identity()
VG.translate(68, 240-64)
VG.set_paint(solid_paint, VG_FILL_PATH)
p.draw(VG_STROKE_PATH | VG_FILL_PATH)
VG.translate(192, 0)
VG.set_paint(linear_paint, VG_FILL_PATH)
p.draw(VG_STROKE_PATH | VG_FILL_PATH)
VG.translate(192, 0)
VG.set_paint(radial_paint, VG_FILL_PATH)
p.draw(VG_STROKE_PATH | VG_FILL_PATH)
pygame.display.flip()
def wheel(self, num_segments, duty_cycle, outer_radius, inner_radius, line_width, color_bias, saturation, value):
VG.set(VG_STROKE_LINE_WIDTH, 0.05)
for i in range(0, num_segments):
inner = 2 * pi / num_segments * (i + 0.5)
inner_x = inner_radius * cos(inner)
inner_y = inner_radius * sin(inner)
p = VG.Path()
r_start = 360.0 / num_segments * i
r_dist = 360.0 / num_segments * duty_cycle
p.move_to((inner_x, inner_y))
VGU.arc(p, (0, 0), (outer_radius * 2, outer_radius * 2), r_start, r_dist, 0xF100)
p.line_to((inner_x, inner_y))
# XXX doesn't join to arc start quite correctly
p.line_to((outer_radius * cos(r_start / 360.0 * 2 * pi), outer_radius * sin(r_start / 360.0 * 2 * pi)))
(r, g, b) = hsv_to_rgb(float(i) / num_segments + color_bias * 2 * pi, saturation, value)
paint = VG.ColorPaint((0, 0, 0, 1.0))
VG.set_paint(paint, VG_STROKE_PATH)
paint = VG.ColorPaint((r, g, b, 1.0))
VG.set_paint(paint, VG_FILL_PATH)
p.draw(VG_FILL_PATH)
p.draw(VG_STROKE_PATH)
def render_bg(self):
return
self.update()
smack = 1/2048.0
glScale(smack,smack,1.0)
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
VG.load_identity()
VG.scale(1.0/smack, 1.0/smack)
idx = 0
while 1:
here = self.offsets[idx]
width = self.offsets[idx+1]-here
disp = self.displacements[idx]
v = self.values[idx]
idx += 1
if here > 1.0:
break
p = VG.Path()
p.move_to((-5,here+width/2))
p.line_to((5,here+width/2 + disp))
VG.set(VG_STROKE_LINE_WIDTH, width)
paint = VG.ColorPaint((0.0, 0.0, 0.0, 1.0))
VG.set_paint(paint, VG_STROKE_PATH)
p.draw(VG_STROKE_PATH)
VG.set(VG_STROKE_LINE_WIDTH, width*.85)
paint = VG.ColorPaint((v, v, v, 1.0))
VG.set_paint(paint, VG_STROKE_PATH)
p.draw(VG_STROKE_PATH)
def main(width, height, radius, count, flags=0):
pygame.init()
pygame.display.gl_set_attribute(pygame.GL_STENCIL_SIZE, 2)
flags |= pygame.OPENGL | pygame.DOUBLEBUF
srf = pygame.display.set_mode((width, height), flags)
pygame.display.set_caption("Blending test")
VG.create_context((width, height))
VG.set(VG_CLEAR_COLOR, (1.0, 1.0, 1.0, 1.0))
orange_paint = VG.ColorPaint((1.0, 0.5, 0.0, 0.5))
blue_paint = VG.ColorPaint((0.0, 0.0, 1.0, 0.5))
black_paint = VG.ColorPaint((0.0, 0.0, 0.0))
blend_modes = [VG_BLEND_SRC, VG_BLEND_SRC_OVER, VG_BLEND_DST_OVER,
VG_BLEND_SRC_IN, VG_BLEND_DST_IN, VG_BLEND_MULTIPLY,
VG_BLEND_SCREEN, VG_BLEND_DARKEN, VG_BLEND_LIGHTEN,
VG_BLEND_ADDITIVE]
blend_index = 0
VG.set(VG_BLEND_MODE, blend_modes[0])
font = Font("data/fonts/Vera.ttf", 30)
src_path = font.build_path("SRC")
dst_path = font.build_path("DST")
message = font.build_path("Scroll to change the blend mode")
circle = VG.Path()
VGU.ellipse(circle, (0, 0), (radius*2, radius*2))
center_and_concat(circle, dst_path)
square = VG.Path()
VGU.rect(square, (-radius, -radius), (radius*2, radius*2))
center_and_concat(square, src_path)
circle2 = VG.Path()
VGU.ellipse(circle2, (0, 0), (radius*2, radius*2))
running = True
while running:
events = pygame.event.get()
for e in events:
if e.type == pygame.QUIT:
running = False
elif e.type == pygame.KEYDOWN:
if e.key == pygame.K_ESCAPE:
running = False
elif e.type == pygame.MOUSEBUTTONDOWN:
if e.button == 4:
blend_index += 1
VG.set(VG_BLEND_MODE, blend_modes[blend_index % len(blend_modes)])
elif e.button == 5:
blend_index -= 1
VG.set(VG_BLEND_MODE, blend_modes[blend_index % len(blend_modes)])
VG.clear((0, 0), (width, height))
VG.set(VG_MATRIX_MODE, VG_MATRIX_PATH_USER_TO_SURFACE)
VG.load_identity()
VG.translate(width - radius*1.5, radius * 2.5)
circle.draw(VG_FILL_PATH | VG_STROKE_PATH)
VG.translate(-radius, -radius)
VG.set_paint(orange_paint, VG_FILL_PATH)
square.draw(VG_FILL_PATH | VG_STROKE_PATH)
VG.set_paint(blue_paint, VG_FILL_PATH)
for i in xrange(count):
angle = i*2*math.pi/count
VG.load_identity()
VG.translate(width//2, height//2)
VG.translate(radius*math.cos(angle), radius*math.sin(angle))
circle2.draw(VG_FILL_PATH)
VG.load_identity()
(x,y), (w,h) = message.bounds()
VG.translate(-x, height-y-h)
message.draw(VG_STROKE_PATH | VG_FILL_PATH)
pygame.display.flip()
