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146 lines
5.6 KiB
146 lines
5.6 KiB
import math
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# me - this DAT
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# scriptOp - the OP which is cooking
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#
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# press 'Setup Parameters' in the OP to call this function to re-create the parameters.
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def onSetupParameters(scriptOp):
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page = scriptOp.appendCustomPage('Custom')
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page.appendFloat('Valuea', label='Value A')
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page.appendFloat('Valueb', label='Value B')
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return
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def onCook(scriptOp):
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scriptOp.clear()
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# Define Table Header with position and rotation columns
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scriptOp.appendRow(['text', 'P(X)', 'P(Y)', 'P(Z)', 'R(X)', 'R(Y)', 'R(Z)'])
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# --- Fetch External Parameters ---
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const_op = op('constant1')
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if not const_op:
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return
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radius_scale = const_op['ring_scale']
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rotate_speed = const_op['rotate_speed']
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# text_space: used to define the angular gap between characters
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text_space = const_op['text_space']
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arc_table = op('arc_table')
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if arc_table:
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arc_table.clear()
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arc_table.appendRow(['tx', 'ty', 'tz','rx', 'ry', 'rz','scale'])
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for source in scriptOp.inputs:
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# Safety check: Input must exist and have at least a header and one data row
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if not source or source.numRows < 2:
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continue
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# Iterate through the rows of the source DAT
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for i, row in enumerate(source.rows()[1:]):
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full_string = row[0].val
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if not full_string:
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continue
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str_len = len(full_string)
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# Fetch speed variation from the speed_variation CHOP
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speed_op = op('speed_variation')
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speed_variation = speed_op[0][i] if speed_op and i < speed_op.numSamples else 0
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# Calculate time-based rotation offset (in radians)
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time_offset = absTime.seconds * rotate_speed *(1.0+ abs(speed_variation))/10.0
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try:
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center = [op('scaled_positions')[0][i], op('scaled_positions')[1][i], op('scaled_positions')[2][i]]
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axis = [float(row[5]), float(row[6]), float(row[7])]
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radius = float(row[8]) * radius_scale
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except (ValueError, TypeError, IndexError):
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continue
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# --- Calculate Orthogonal Basis for the Ring Plane ---
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ax, ay, az = axis
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mag = math.sqrt(ax*ax + ay*ay + az*az)
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if mag == 0:
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ax, ay, az = 0, 1, 0
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else:
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ax, ay, az = ax/mag, ay/mag, az/mag
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if abs(ax) < 0.9:
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tx, ty, tz = 1, 0, 0
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else:
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tx, ty, tz = 0, 1, 0
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ux = ay*tz - az*ty
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uy = az*tx - ax*tz
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uz = ax*ty - ay*tx
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umag = math.sqrt(ux*ux + uy*uy + uz*uz)
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ux, uy, uz = ux/umag, uy/umag, uz/umag
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vx = ay*uz - az*uy
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vy = az*ux - ax*uz
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vz = ax*uy - ay*ux
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# --- Calculate Arc Logic ---
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# Instead of forcing (i/str_len)*2*pi, we use text_space to determine the gap.
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# If the total arc (gap * characters) < 2*pi, it remains an arc.
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angular_step = text_space / (radius if radius > 0 else 1)
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# angular_step = radius*math.pi*2.0/text_space if radius>0 else math.pi*2.0/str_len
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total= math.floor(math.pi*2.0/(angular_step))
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count=0
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print(f"Processing string with length {str_len}, total positions: {total}")
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# Build the table character by character
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while count<total:
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# for j in range(str_len):
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# angle = (index * step) + time_offset
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angle = ((count) * angular_step) + time_offset
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cos_a = math.cos(angle) * radius
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sin_a = math.sin(angle) * radius
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# Outward vector relative to center
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off_x = (ux * cos_a) + (vx * sin_a)
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off_y = (uy * cos_a) + (vy * sin_a)
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off_z = (uz * cos_a) + (vz * sin_a)
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# Final World Position
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px = center[0] + off_x + parent().par.Keywordpositionx
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py = center[1] + off_y + parent().par.Keywordpositiony
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pz = center[2] + off_z + parent().par.Keywordpositionz
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# --- Calculate Rotations to face outside ---
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dist = math.sqrt(off_x**2 + off_y**2 + off_z**2)
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if dist > 0:
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nx, ny, nz = off_x/dist, off_y/dist, off_z/dist
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else:
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nx, ny, nz = 0, 0, 1
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char_ry = math.degrees(math.atan2(nx, nz))
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char_rx = math.degrees(math.asin(-ny)) + 90
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char_rz = 0
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tan_x = (ux * -math.sin(angle)) + (vx * math.cos(angle))
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tan_y = (uy * -math.sin(angle)) + (vy * math.cos(angle))
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tan_z = (uz * -math.sin(angle)) + (vz * math.cos(angle))
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line_ry = math.degrees(math.atan2(tan_x, tan_z)) - 90
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line_rx = math.degrees(math.asin(-tan_y))
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# ry = math.degrees(math.atan2(nx, nz))
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# rx = math.degrees(math.asin(-ny))-90
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# rz = 0
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if count>=str_len:
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scale= radius*angular_step if radius>0 else 1
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arc_table.appendRow([px, py, pz, line_rx, line_ry, 0, scale*0.5])
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# scriptOp.appendRow(['-', px, py, pz, char_rx, char_ry, 0])
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else:
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char = full_string[count]
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scriptOp.appendRow([char, px, py, pz, char_rx, char_ry, 0])
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# arc_table.appendRow([px, py, pz, rx, ry, rz, 1.0])
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count+=1
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return
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def onGetCookLevel(scriptOp):
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return CookLevel.ALWAYS |