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import ctypes |
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from pypen.drawing.color import Color |
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4
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from pypen.utils.math import TAU |
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import cairo |
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from pyglet import gl, image |
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8
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class PyPen(): |
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def __init__(self, user_sketch): |
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self.user_sketch = user_sketch |
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11
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self.surface_data = None |
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self.surface = None |
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self.context = None |
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self.update_settings() |
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self._fix_primitive_functions() |
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def _fix_primitive_functions(self): |
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self.user_sketch.fill_screen = self.fill_screen |
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self.user_sketch.clear_screen = self.clear_screen |
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self.user_sketch.clear = self.clear |
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self.user_sketch.rectangle = self.rectangle |
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self.user_sketch.circle = self.circle |
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self.user_sketch.ellipse = self.ellipse |
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self.user_sketch.arc = self.arc |
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self.user_sketch.arc = self.arc |
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self.user_sketch.rotate = self.rotate |
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self.user_sketch.translate = self.translate |
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self.user_sketch.scale = self.scale |
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self.user_sketch.save = self.save |
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self.user_sketch.restore = self.restore |
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def _fill(self, unparsed_fill_color): |
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if unparsed_fill_color != "": |
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self.user_sketch.settings.fill_color = unparsed_fill_color |
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fill_color = Color.from_user_input(self.user_sketch.settings.fill_color) |
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self.context.set_source_rgba(*fill_color.rgba()) |
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self.context.fill() |
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def _stroke(self, unparsed_stroke_color, unparsed_stroke_width): |
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if unparsed_stroke_color != "": |
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self.user_sketch.settings.stroke_color = unparsed_stroke_color |
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49
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if unparsed_stroke_width >= 0: |
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self.user_sketch.settings.stroke_width = unparsed_stroke_width |
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stroke_color = Color.from_user_input(self.user_sketch.settings.stroke_color) |
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stroke_width = self.user_sketch.settings.stroke_width |
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self.context.set_line_width(stroke_width) |
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self.context.set_source_rgba(*stroke_color.rgba()) |
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self.context.stroke_preserve() |
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59
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def rotate(self, angle=0): |
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self.context.rotate(angle) |
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def translate(self, x=0, y=0): |
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self.context.translate(x, y) |
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def scale(self, factor=1): |
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self.context.scale(factor) |
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def save(self): |
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self.context.save() |
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def restore(self): |
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self.context.restore() |
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74
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def update_settings(self): |
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self.surface_data = (ctypes.c_ubyte * (self.user_sketch.settings.width * self.user_sketch.settings.height * 4))() |
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self.surface = cairo.ImageSurface.create_for_data(self.surface_data, |
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cairo.FORMAT_ARGB32, |
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self.user_sketch.settings.width, |
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self.user_sketch.settings.height, |
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self.user_sketch.settings.width * 4) |
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self.context = cairo.Context(self.surface) |
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self.texture = image.Texture.create_for_size(gl.GL_TEXTURE_2D, self.user_sketch.settings.width, self.user_sketch.settings.height, gl.GL_RGBA) |
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84
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def clear_screen(self): |
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self.fill_screen("default_background_color") |
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87
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def clear(self): |
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self.clear_screen() |
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90
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def fill_screen(self, color="default_background_color"): |
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self.context.save() |
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self.context.scale(self.user_sketch.settings.width, self.user_sketch.settings.height) |
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self.rectangle(0, 0, 1, 1, color) |
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self.context.restore() |
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96
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def rectangle(self, x, y, width, height, fill_color="", stroke_color="", stroke_width=-1): |
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self.context.rectangle(x, y, width, height) |
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self._stroke(stroke_color, stroke_width) |
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self._fill(fill_color) |
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101
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def circle(self, x, y, radius, fill_color="", stroke_color="", stroke_width=-1): |
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self.context.arc(x, y, radius, 0, TAU) |
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self._stroke(stroke_color, stroke_width) |
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self._fill(fill_color) |
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105
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106
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def ellipse(self, x, y, width, height, fill_color="", stroke_color="", stroke_width=-1): |
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107
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ratio = height/width |
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108
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self.save() |
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self.context.scale(1, ratio) |
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self.context.arc(x, y/ratio, width, 0, TAU) |
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self.restore() |
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112
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self._stroke(stroke_color, stroke_width) |
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self._fill(fill_color) |
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114
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115
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def arc(self, x, y, radius, start_angle, stop_angle, fill_color="", stroke_color="", stroke_width=-1): |
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116
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self.context.arc(x, y, radius, start_angle, stop_angle) |
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self._stroke(stroke_color, stroke_width) |
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self._fill(fill_color) |
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119
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Canvim /
PyPen
