5476da8aa3
- 'clear' polarity primitives no longer erase background
- Added aperture macro support for polygons
- Added aperture macro rendring support
- Renderer now creates a new surface for each layer and merges them instead of working
directly on a single surface
- Updated examples accordingly
109 lines
2.7 KiB
Python
109 lines
2.7 KiB
Python
#! /usr/bin/env python
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# -*- coding: utf-8 -*-
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# copyright 2014 Hamilton Kibbe <ham@hamiltonkib.be>
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# copyright 2014 Paulo Henrique Silva <ph.silva@gmail.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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""" This module provides RS-274-X AM macro evaluation.
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"""
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class OpCode:
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PUSH = 1
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LOAD = 2
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STORE = 3
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ADD = 4
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SUB = 5
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MUL = 6
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DIV = 7
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PRIM = 8
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@staticmethod
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def str(opcode):
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if opcode == OpCode.PUSH:
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return "OPCODE_PUSH"
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elif opcode == OpCode.LOAD:
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return "OPCODE_LOAD"
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elif opcode == OpCode.STORE:
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return "OPCODE_STORE"
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elif opcode == OpCode.ADD:
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return "OPCODE_ADD"
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elif opcode == OpCode.SUB:
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return "OPCODE_SUB"
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elif opcode == OpCode.MUL:
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return "OPCODE_MUL"
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elif opcode == OpCode.DIV:
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return "OPCODE_DIV"
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elif opcode == OpCode.PRIM:
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return "OPCODE_PRIM"
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else:
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return "UNKNOWN"
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def eval_macro(instructions, parameters={}):
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if not isinstance(parameters, type({})):
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p = {}
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for i, val in enumerate(parameters):
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p[i + 1] = val
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parameters = p
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stack = []
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def pop():
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return stack.pop()
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def push(op):
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stack.append(op)
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def top():
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return stack[-1]
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def empty():
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return len(stack) == 0
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for opcode, argument in instructions:
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if opcode == OpCode.PUSH:
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push(argument)
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elif opcode == OpCode.LOAD:
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push(parameters.get(argument, 0))
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elif opcode == OpCode.STORE:
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parameters[argument] = pop()
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elif opcode == OpCode.ADD:
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op1 = pop()
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op2 = pop()
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push(op2 + op1)
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elif opcode == OpCode.SUB:
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op1 = pop()
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op2 = pop()
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push(op2 - op2)
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elif opcode == OpCode.MUL:
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op1 = pop()
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op2 = pop()
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push(op2 * op1)
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elif opcode == OpCode.DIV:
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op1 = pop()
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op2 = pop()
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push(op2 / op1)
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elif opcode == OpCode.PRIM:
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yield "%d,%s" % (argument, ",".join([str(x) for x in stack]))
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stack = []
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