572 lines
22 KiB
Python
572 lines
22 KiB
Python
import numpy as np
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from PyQt6.QtOpenGLWidgets import QOpenGLWidget
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from PyQt6.QtCore import Qt, QEvent, QThread, pyqtSignal
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from PyQt6.QtGui import QTouchEvent, QSurfaceFormat
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from PyQt6.QtOpenGL import QOpenGLShaderProgram, QOpenGLShader, QOpenGLBuffer
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class GCodeParseWorker(QThread):
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finished = pyqtSignal(dict)
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def __init__(self, filepath, type_map, default_colors, parent=None):
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super().__init__(parent)
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self.filepath = filepath
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self.TYPE_MAP = type_map
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self.DEFAULT_COLORS = default_colors
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def run(self):
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points = []
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colors = []
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type_segments = {}
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type_visibility = {}
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x = y = z = e = 0.0
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vertex_idx = 0
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feature_type = 'OTHER'
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current_segment_type = 'OTHER'
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segment_start = 0
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type_visibility['TRAVEL'] = False
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relative_e = False
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min_x = min_y = min_z = float('inf')
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max_x = max_y = max_z = float('-inf')
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current_offset = 0
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max_z_seen = -999.0
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layer_map = [(0, 0)]
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def add_segment(t_name, start, length):
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if length > 0:
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type_segments.setdefault(t_name, []).append((start, length))
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try:
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with open(self.filepath, 'rb') as f:
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for line_bytes in f:
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current_offset += len(line_bytes)
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line = line_bytes.decode('utf-8', errors='ignore').strip()
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if not line:
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continue
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if line.startswith('M82'):
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relative_e = False
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continue
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if line.startswith('M83'):
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relative_e = True
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continue
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if line.startswith(';'):
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if line.startswith(';TYPE:'):
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raw_type = line.split(':', 1)[1].strip()
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else:
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raw_type = line[1:].strip()
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if raw_type not in self.TYPE_MAP and not any(k in raw_type.lower() for k in ('perimeter', 'infill', 'material', 'skirt/brim')):
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continue
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if 'Skirt/Brim' in raw_type:
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raw_type = 'Skirt'
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new_type = self.TYPE_MAP.get(raw_type, 'OTHER')
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if new_type != feature_type:
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feature_type = new_type
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if feature_type not in type_visibility:
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type_visibility[feature_type] = True
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continue
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if line.startswith(('G0', 'G1')):
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new_x, new_y, new_z = x, y, z
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e_val = 0.0
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has_e = False
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parts = line.split(';')[0].split()
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for p in parts[1:]:
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try:
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if p.startswith('X'): new_x = float(p[1:])
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elif p.startswith('Y'): new_y = float(p[1:])
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elif p.startswith('Z'): new_z = float(p[1:])
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elif p.startswith('E'):
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e_val = float(p[1:])
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has_e = True
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except ValueError:
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pass
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if new_x == x and new_y == y and new_z == z:
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if has_e:
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if relative_e: e += e_val
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else: e = e_val
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continue
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is_extrusion = False
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if has_e:
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if relative_e:
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is_extrusion = e_val > 0
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new_e = e + e_val
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else:
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is_extrusion = e_val > e
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new_e = e_val
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else:
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new_e = e
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if is_extrusion:
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seg_type = feature_type
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c = self.DEFAULT_COLORS.get(feature_type, self.DEFAULT_COLORS['OTHER'])
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else:
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seg_type = 'TRAVEL'
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c = self.DEFAULT_COLORS['TRAVEL']
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if 'TRAVEL' not in type_visibility:
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type_visibility['TRAVEL'] = False
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if seg_type != current_segment_type:
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if vertex_idx > segment_start:
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add_segment(current_segment_type, segment_start, vertex_idx - segment_start)
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current_segment_type = seg_type
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segment_start = vertex_idx
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if new_x < min_x: min_x = new_x
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if new_x > max_x: max_x = new_x
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if new_y < min_y: min_y = new_y
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if new_y > max_y: max_y = new_y
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if new_z < min_z: min_z = new_z
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if new_z > max_z: max_z = new_z
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if new_z > max_z_seen and is_extrusion:
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max_z_seen = new_z
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layer_map.append((current_offset, vertex_idx))
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points.extend([x, y, z, new_x, new_y, new_z])
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colors.extend([*c, *c])
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vertex_idx += 2
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x, y, z, e = new_x, new_y, new_z, new_e
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elif line.startswith('G92'):
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parts = line.split(';')[0].split()
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for p in parts[1:]:
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try:
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if p.startswith('E'): e = float(p[1:])
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elif p.startswith('X'): x = float(p[1:])
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elif p.startswith('Y'): y = float(p[1:])
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elif p.startswith('Z'): z = float(p[1:])
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except ValueError:
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pass
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if vertex_idx > segment_start:
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add_segment(current_segment_type, segment_start, vertex_idx - segment_start)
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cx = (min_x + max_x) / 2.0 if max_x >= min_x else 110.0
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cy = (min_y + max_y) / 2.0 if max_y >= min_y else 110.0
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cz = (min_z + max_z) / 2.0 if max_z >= min_z else 0.0
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result = {
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'vertices': np.array(points, dtype=np.float32) if vertex_idx > 0 else np.zeros((0,), dtype=np.float32),
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'colors': np.array(colors, dtype=np.float32) if vertex_idx > 0 else np.zeros((0,), dtype=np.float32),
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'vertex_count': vertex_idx,
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'center_x': cx,
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'center_y': cy,
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'center_z': cz,
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'type_segments': type_segments,
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'type_visibility': type_visibility,
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'layer_map': layer_map
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}
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self.finished.emit(result)
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except Exception as e:
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print("ParseGCode Error:", e)
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self.finished.emit({})
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class GCodeViewerWidget(QOpenGLWidget):
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"""
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3D G-code 预览控件（OpenGL ES / eglfs 兼容版）
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使用可编程管线替代固定管线，适配树莓派 4B
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"""
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# PrusaSlicer 类型映射、颜色定义等保持不变
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TYPE_MAP = {
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'External perimeter': 'WALL-OUTER',
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'Perimeter': 'WALL-INNER',
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'Overhang perimeter': 'WALL-OUTER',
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'Solid infill': 'SKIN',
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'Top solid infill': 'SKIN',
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'Bridge infill': 'SKIN',
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'Internal infill': 'FILL',
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'Support material': 'SUPPORT',
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'Support material interface': 'SUPPORT-INTERFACE',
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'Skirt': 'SKIRT',
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'Brim': 'SKIRT',
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'Custom': 'OTHER',
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}
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DEFAULT_COLORS = {
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'WALL-OUTER': (0.92, 0.55, 0.22), # 0xeb8b38
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'WALL-INNER': (0.25, 0.50, 0.81), # 0x4080cf
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'FILL': (0.80, 0.75, 0.29), # 0xccc04b
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'SKIN': (0.62, 0.38, 0.70), # 0x9e60b3
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'SUPPORT': (0.34, 0.70, 0.34), # 0x57b357
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'SUPPORT-INTERFACE': (0.17, 0.42, 0.17), # 0x2b6b2b
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'SKIRT': (0.00, 1.00, 1.00), # 0x00ffff
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'OTHER': (0.67, 0.67, 0.67), # 0xaaaaaa
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'TRAVEL': (0.25, 0.31, 0.38), # 0x405060
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}
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# 顶点着色器（GLSL ES 1.00）
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VERTEX_SHADER = """
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attribute vec3 aPos;
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attribute vec3 aColor;
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varying vec3 vColor;
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uniform mat4 uMVP;
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void main() {
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gl_Position = uMVP * vec4(aPos, 1.0);
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vColor = aColor;
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}
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"""
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# 片段着色器（添加可调节颜色深度的 uniform 以实现边界加深）
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FRAGMENT_SHADER = """
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precision mediump float;
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varying vec3 vColor;
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uniform float uDarken;
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void main() {
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gl_FragColor = vec4(vColor * uDarken, 1.0);
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}
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"""
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def __init__(self, parent=None):
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# 请求 OpenGL ES 2.0 上下文
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fmt = QSurfaceFormat()
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fmt.setRenderableType(QSurfaceFormat.RenderableType.OpenGLES)
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fmt.setVersion(2, 0)
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super().__init__(parent)
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self.setMinimumSize(400, 300)
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self.setAttribute(Qt.WidgetAttribute.WA_AcceptTouchEvents, True)
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self.setFormat(fmt)
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# 数据缓冲区
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self.vertices = None
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self.colors = None
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self.vertex_count = 0
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self.vbo_vertices = None
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self.vbo_colors = None
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self.vbo_ready = False
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# 类型分段
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self.type_segments = {}
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self.type_visibility = {}
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self.current_type = 'OTHER'
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# 视角参数
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self.view_rot_x = -60.0
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self.view_rot_z = 45.0
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self.view_zoom = -250.0 # 稍微退后一点以便看到整个打印平台
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self.view_trans_x = 0.0
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self.view_trans_y = 0.0
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# ...
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self.progress_ratio = 1.0
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self.progress_vertices = 0
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# 按需渲染：缓存当前的 filepos 对应的顶点数
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self.layer_map = [(0, 0)] # (offset_bytes, vertex_idx)
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self.last_reported_filepos = -1
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# 模型中心点
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self.center_x = 110.0
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self.center_y = 110.0
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self.center_z = 0.0
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# 触摸状态
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self.last_mouse_pos = None
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self._touch_points = {}
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self._pinch_start_dist = 0.0
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self._pinch_start_zoom = 0.0
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self._pinch_start_center = None
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self._pinch_start_trans = (0.0, 0.0)
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self._ignore_wheel = False
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self._rot_sensitivity = 0.1
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# 着色器程序
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self.shader_program = None
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self.aPos_location = None
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self.aColor_location = None
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self.uMVP_location = None
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# ── 公开接口 ──
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def load_gcode(self, filepath: str):
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if hasattr(self, '_worker') and self._worker.isRunning():
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self._worker.terminate()
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self._worker.wait()
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self._worker = GCodeParseWorker(filepath, self.TYPE_MAP, self.DEFAULT_COLORS)
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self._worker.finished.connect(self._on_parse_finished)
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self._worker.start()
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def _on_parse_finished(self, result: dict):
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if not result:
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return
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self.vertices = result['vertices']
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self.colors = result['colors']
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self.vertex_count = result['vertex_count']
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self.center_x = result['center_x']
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self.center_y = result['center_y']
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self.center_z = result['center_z']
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self.type_segments = result['type_segments']
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self.type_visibility = result['type_visibility']
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self.layer_map = result['layer_map']
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self.vbo_ready = False
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# 初始时先不显示，让 update_by_filepos 决定，或者如果是0则自动更新
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# 这里把 progress_vertices 赋予当前的 target
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target = 0
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if self.layer_map:
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target = self.layer_map[-1][1] # 全显
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self.progress_vertices = target
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self.last_reported_filepos = -1
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self.update()
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def update_processes(self, progress: float):
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pass
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def update_by_filepos(self, filepos: int, is_printing: bool = True):
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import bisect
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if not hasattr(self, 'layer_map') or not self.layer_map:
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return
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if not is_printing:
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# 不在打印途中时，渲染包含所有顶点（完整模型）
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target_vertices = self.vertex_count
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else:
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# 使用二分查找快速定位当前 filepos 对应的最多展示顶点数
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keys = [item[0] for item in self.layer_map]
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idx = bisect.bisect_right(keys, filepos)
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target_vertices = 0 if idx == 0 else self.layer_map[idx-1][1]
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# 按需渲染：只有当层级（计算出的可见顶点数）真正发生跳变时才调用 update()
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if target_vertices != getattr(self, 'progress_vertices', -1):
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self.progress_vertices = target_vertices
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self.update()
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def update_switch(self, type_name: str, visible: bool):
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if type_name in self.type_visibility:
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self.type_visibility[type_name] = visible
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self.update()
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def set_view_angles(self, rot_x: float, rot_z: float, zoom: float = None):
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self.view_rot_x = max(-90.0, min(0.0, rot_x))
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self.view_rot_z = rot_z
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if zoom is not None:
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self.view_zoom = zoom
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self.update()
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if length == 0:
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return
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self.type_segments.setdefault(type_name, []).append((start, length))
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# ── OpenGL 可编程管线初始化 ──
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def initializeGL(self):
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import OpenGL.GL as gl
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gl.glClearColor(0.15, 0.15, 0.15, 1.0)
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gl.glEnable(gl.GL_DEPTH_TEST)
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gl.glLineWidth(1.0)
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# 编译着色器
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self.shader_program = QOpenGLShaderProgram()
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self.shader_program.addShaderFromSourceCode(QOpenGLShader.ShaderTypeBit.Vertex, self.VERTEX_SHADER)
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self.shader_program.addShaderFromSourceCode(QOpenGLShader.ShaderTypeBit.Fragment, self.FRAGMENT_SHADER)
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self.shader_program.link()
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# 获取属性和 uniform 位置
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self.aPos_location = self.shader_program.attributeLocation("aPos")
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self.aColor_location = self.shader_program.attributeLocation("aColor")
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self.uMVP_location = self.shader_program.uniformLocation("uMVP")
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self.uDarken_location = self.shader_program.uniformLocation("uDarken")
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# 创建缓冲对象
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self.vbo_vertices = QOpenGLBuffer(QOpenGLBuffer.Type.VertexBuffer)
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self.vbo_colors = QOpenGLBuffer(QOpenGLBuffer.Type.VertexBuffer)
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def resizeGL(self, w, h):
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import OpenGL.GL as gl
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gl.glViewport(0, 0, w, h)
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# ── 构建 MVP 矩阵（替代 glOrtho/glRotate） ──
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def _build_mvp(self):
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from PyQt6.QtGui import QMatrix4x4
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mat = QMatrix4x4()
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aspect = self.width() / self.height() if self.height() else 1
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mat.perspective(45.0, aspect, 1.0, 1000.0)
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mat.translate(self.view_trans_x, self.view_trans_y, self.view_zoom)
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mat.rotate(self.view_rot_x, 1.0, 0.0, 0.0)
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mat.rotate(self.view_rot_z, 0.0, 0.0, 1.0)
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mat.translate(-self.center_x, -self.center_y, -self.center_z)
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return mat
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# ── 渲染 ──
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def paintGL(self):
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import OpenGL.GL as gl
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gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
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if self.vertices is None or self.vertex_count == 0:
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return
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if not self.vbo_ready:
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self._create_vbos()
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self.vbo_ready = True
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# 使用着色器程序
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self.shader_program.bind()
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# 设置 MVP 矩阵
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import math
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from PyQt6.QtGui import QMatrix4x4
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mvp_mat = self._build_mvp()
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self.shader_program.setUniformValue(self.uMVP_location, mvp_mat)
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# 绑定 VBO
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self.vbo_vertices.bind()
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self.shader_program.setAttributeBuffer(self.aPos_location, gl.GL_FLOAT, 0, 3, 0)
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self.shader_program.enableAttributeArray(self.aPos_location)
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self.vbo_colors.bind()
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self.shader_program.setAttributeBuffer(self.aColor_location, gl.GL_FLOAT, 0, 3, 0)
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self.shader_program.enableAttributeArray(self.aColor_location)
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# 允许 z-fighting 覆盖，用于同一位置多次渲染线条
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gl.glDepthFunc(gl.GL_LEQUAL)
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# 渲染两次：一次绘制加粗加深的边界底线，一次绘制正常宽度的原色骨架线
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# （在树莓派等性能有限的平台上，使用真实的3D圆柱/方块代替线条会导致顶点数暴增十几倍直接卡顿，
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# 因此通过动态加粗像素级线宽来性能无损地模拟出“体积感”）
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for pass_idx in range(2):
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if pass_idx == 0:
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gl.glLineWidth(6.0) # 底线宽度（加大以模拟体积轮廓）
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self.shader_program.setUniformValue(self.uDarken_location, 0.8) # 加深颜色至 40% 亮度
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else:
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gl.glLineWidth(3.0) # 主体宽度（加大以模拟线条厚度）
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self.shader_program.setUniformValue(self.uDarken_location, 1.0) # 保持原色
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# 按类型分段绘制
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for type_name, segments in self.type_segments.items():
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if not self.type_visibility.get(type_name, True):
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continue
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for start, length in segments:
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if start >= self.progress_vertices:
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||
continue
|
||
end = start + length
|
||
visible_start = start
|
||
visible_count = length
|
||
if end > self.progress_vertices:
|
||
visible_count = self.progress_vertices - start
|
||
if visible_count > 0:
|
||
gl.glDrawArrays(gl.GL_LINES, visible_start, visible_count)
|
||
|
||
# 恢复默认深度测试模式
|
||
gl.glDepthFunc(gl.GL_LESS)
|
||
|
||
self.shader_program.disableAttributeArray(self.aPos_location)
|
||
self.shader_program.disableAttributeArray(self.aColor_location)
|
||
self.vbo_vertices.release()
|
||
self.vbo_colors.release()
|
||
self.shader_program.release()
|
||
|
||
def _create_vbos(self):
|
||
if self.vbo_vertices.isCreated():
|
||
self.vbo_vertices.destroy()
|
||
if self.vbo_colors.isCreated():
|
||
self.vbo_colors.destroy()
|
||
|
||
self.vbo_vertices.create()
|
||
self.vbo_vertices.bind()
|
||
self.vbo_vertices.allocate(self.vertices.tobytes(), self.vertices.nbytes)
|
||
self.vbo_vertices.release()
|
||
|
||
self.vbo_colors.create()
|
||
self.vbo_colors.bind()
|
||
self.vbo_colors.allocate(self.colors.tobytes(), self.colors.nbytes)
|
||
self.vbo_colors.release()
|
||
|
||
# ── 触摸/鼠标交互（完全不变） ──
|
||
def mousePressEvent(self, event):
|
||
self.last_mouse_pos = event.position()
|
||
|
||
def mouseMoveEvent(self, event):
|
||
if self.last_mouse_pos is None:
|
||
return
|
||
dx = event.position().x() - self.last_mouse_pos.x()
|
||
dy = event.position().y() - self.last_mouse_pos.y()
|
||
if event.buttons() & Qt.MouseButton.LeftButton:
|
||
self.view_rot_x += dy * self._rot_sensitivity
|
||
self.view_rot_x = max(-90.0, min(0.0, self.view_rot_x)) # 限制垂直视角的翻转
|
||
self.view_rot_z += dx * self._rot_sensitivity
|
||
self.last_mouse_pos = event.position()
|
||
self.update()
|
||
|
||
def wheelEvent(self, event):
|
||
delta = event.angleDelta().y() / 120
|
||
self.view_zoom += delta * 10
|
||
self.update()
|
||
|
||
def event(self, e):
|
||
if e.type() in (QEvent.Type.TouchBegin, QEvent.Type.TouchUpdate, QEvent.Type.TouchEnd):
|
||
self._ignore_wheel = True
|
||
self.touchEvent(e)
|
||
return True
|
||
elif e.type() == QEvent.Type.Wheel:
|
||
if self._ignore_wheel:
|
||
self._ignore_wheel = False
|
||
return True
|
||
return super().event(e)
|
||
|
||
def touchEvent(self, event: QTouchEvent):
|
||
points = event.points()
|
||
if not points:
|
||
return
|
||
|
||
if event.type() == QEvent.Type.TouchEnd:
|
||
self._touch_points.clear()
|
||
self._pinch_start_center = None
|
||
self._pinch_start_dist = 0.0
|
||
event.accept()
|
||
return
|
||
|
||
if len(points) == 1:
|
||
p = points[0]
|
||
# 如果是刚检测到单指，或者从双指变回单指
|
||
if p.id() not in self._touch_points or self._pinch_start_center is not None:
|
||
self._touch_points.clear()
|
||
self._touch_points[p.id()] = p.position()
|
||
self._pinch_start_center = None
|
||
else:
|
||
last = self._touch_points[p.id()]
|
||
dx = p.position().x() - last.x()
|
||
dy = p.position().y() - last.y()
|
||
self.view_rot_x += dy * self._rot_sensitivity
|
||
self.view_rot_x = max(-90.0, min(0.0, self.view_rot_x)) # 限制垂直视角的翻转
|
||
self.view_rot_z += dx * self._rot_sensitivity
|
||
self._touch_points[p.id()] = p.position()
|
||
self.update()
|
||
|
||
elif len(points) == 2:
|
||
p1, p2 = points[0], points[1]
|
||
dx_p = p1.position().x() - p2.position().x()
|
||
dy_p = p1.position().y() - p2.position().y()
|
||
dist = (dx_p**2 + dy_p**2)**0.5
|
||
center_x = (p1.position().x() + p2.position().x()) / 2.0
|
||
center_y = (p1.position().y() + p2.position().y()) / 2.0
|
||
|
||
# 初始化双指状态
|
||
if self._pinch_start_center is None:
|
||
self._pinch_start_dist = dist
|
||
self._pinch_start_zoom = self.view_zoom
|
||
self._pinch_start_center = (center_x, center_y)
|
||
self._pinch_start_trans = (self.view_trans_x, self.view_trans_y)
|
||
self._touch_points.clear() # 清除单指记录
|
||
else:
|
||
# 缩放 (双指捏合)
|
||
if self._pinch_start_dist > 0:
|
||
scale = dist / self._pinch_start_dist
|
||
self.view_zoom = self._pinch_start_zoom * (1 / scale)
|
||
|
||
# 平移 (双指并行移动)
|
||
dcx = center_x - self._pinch_start_center[0]
|
||
dcy = center_y - self._pinch_start_center[1]
|
||
pan_speed = abs(self.view_zoom) * 0.002
|
||
self.view_trans_x = self._pinch_start_trans[0] + dcx * pan_speed
|
||
self.view_trans_y = self._pinch_start_trans[1] - dcy * pan_speed
|
||
|
||
self.update()
|
||
event.accept() |