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103 lines
3.7 KiB
103 lines
3.7 KiB
5 months ago
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import pyglet.gl as pgl
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from sympy.core import S
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from sympy.plotting.pygletplot.plot_mode_base import PlotModeBase
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class PlotSurface(PlotModeBase):
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default_rot_preset = 'perspective'
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def _on_calculate_verts(self):
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self.u_interval = self.intervals[0]
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self.u_set = list(self.u_interval.frange())
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self.v_interval = self.intervals[1]
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self.v_set = list(self.v_interval.frange())
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self.bounds = [[S.Infinity, S.NegativeInfinity, 0],
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[S.Infinity, S.NegativeInfinity, 0],
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[S.Infinity, S.NegativeInfinity, 0]]
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evaluate = self._get_evaluator()
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self._calculating_verts_pos = 0.0
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self._calculating_verts_len = float(
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self.u_interval.v_len*self.v_interval.v_len)
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verts = []
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b = self.bounds
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for u in self.u_set:
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column = []
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for v in self.v_set:
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try:
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_e = evaluate(u, v) # calculate vertex
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except ZeroDivisionError:
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_e = None
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if _e is not None: # update bounding box
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for axis in range(3):
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b[axis][0] = min([b[axis][0], _e[axis]])
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b[axis][1] = max([b[axis][1], _e[axis]])
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column.append(_e)
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self._calculating_verts_pos += 1.0
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verts.append(column)
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for axis in range(3):
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b[axis][2] = b[axis][1] - b[axis][0]
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if b[axis][2] == 0.0:
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b[axis][2] = 1.0
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self.verts = verts
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self.push_wireframe(self.draw_verts(False, False))
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self.push_solid(self.draw_verts(False, True))
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def _on_calculate_cverts(self):
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if not self.verts or not self.color:
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return
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def set_work_len(n):
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self._calculating_cverts_len = float(n)
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def inc_work_pos():
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self._calculating_cverts_pos += 1.0
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set_work_len(1)
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self._calculating_cverts_pos = 0
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self.cverts = self.color.apply_to_surface(self.verts,
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self.u_set,
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self.v_set,
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set_len=set_work_len,
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inc_pos=inc_work_pos)
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self.push_solid(self.draw_verts(True, True))
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def calculate_one_cvert(self, u, v):
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vert = self.verts[u][v]
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return self.color(vert[0], vert[1], vert[2],
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self.u_set[u], self.v_set[v])
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def draw_verts(self, use_cverts, use_solid_color):
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def f():
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for u in range(1, len(self.u_set)):
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pgl.glBegin(pgl.GL_QUAD_STRIP)
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for v in range(len(self.v_set)):
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pa = self.verts[u - 1][v]
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pb = self.verts[u][v]
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if pa is None or pb is None:
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pgl.glEnd()
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pgl.glBegin(pgl.GL_QUAD_STRIP)
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continue
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if use_cverts:
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ca = self.cverts[u - 1][v]
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cb = self.cverts[u][v]
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if ca is None:
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ca = (0, 0, 0)
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if cb is None:
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cb = (0, 0, 0)
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else:
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if use_solid_color:
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ca = cb = self.default_solid_color
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else:
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ca = cb = self.default_wireframe_color
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pgl.glColor3f(*ca)
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pgl.glVertex3f(*pa)
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pgl.glColor3f(*cb)
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pgl.glVertex3f(*pb)
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pgl.glEnd()
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return f
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