HDevelop User's Manual

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72 CHAPTER 3. LANGUAGE In no case does a nonexistent or insufficient field width cause truncation of a field; if the result of a conversion is wider than the field width, the field is simply expanded to contain the conversion result. Examples for the string conversion can be found in the program ×ØÖÒºÚ. The string concatenation (·) can be applied in combination with strings or all numerical types; if necessary, the operands are first transformed into strings (according to their standard representation). At least one of the operands has to be already a string so that the operator can act as a string concatenator. In the following example a filename (e.g., ³ÆÑºØ³) is generated. For this purpose two string constants (³ÆÑ³ and ³ºØ³) and an integer value (the loop-index ) are concatenated: ÓÖ ½ ØÓ Ý ½ ÖÑ ´Ð¸ ³ÆÑ³··³ºØ³µ ÒÓÖ ×ØÖ´ÖµÖ´×½¸×¾µ returns the index of the first (last) as a tuple occurrence of one character in ×¾ in string ×½, or¹½ if none of the characters occurs in the string. ×ØÖ´Öµ×ØÖ´×½¸×¾µ returns the index of the first (last) occurrence of string s2 in string s1, or ¹½ if s2 does not occur in the string. ×ØÖÐÒ´×µ returns the number of characters in ×. × returns the character at index position in ×. The index ranges from zero to the length of the string minus 1. The result of the operator is a string of length one. ×½¾ returns all characters from index position ½ up to position ¾ in × as a string. The index ranges from zero to the length of the string minus 1. ×ÔÐØ´×½¸×¾µ devides the string ×½ into single substrings. The string is split at those positions where it contains a character from ×¾. As an example the result of ×ÔÐØ´³»Ù×Ö»Ñ»Ù×Ö»ÔÖÓ»Ñ³¸³³µ consists of the two strings ³»Ù×Ö»Ñ³¸³»Ù×Ö»ÔÖÓ»Ñ³℄ 3.5.8 Comparison Operators In <strong>HDevelop</strong>, the comparison operators are defined not only on atomic values, but also on tuples with an arbitrary number of elements. They always return values of type ÓÓÐÒ. Table 3.12 shows all comparison operators. Ø Ø and Ø Ø are defined on all types. Two tuples are equal (ØÖÙ), if they have the same length and all the data items on each index position are equal. If the operands have different types (ÒØÖ and ÖÐ), the integer values are first transformed into ÖÐ numbers. Values <strong>HDevelop</strong> / 2000-11-16
3.5. EXPRESSIONS FOR INPUT CONTROL PARAMETERS 73 Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø Ø less than greater than less or equal greater or equal equal not equal Table 3.12: Comparison operators 1st Operand 2nd Operand Operation Result ½ ½º¼ ØÖÙ ℄ ℄ ØÖÙ ³³ ℄ Ð× ½¸³¾³℄ ½¸¾℄ Ð× ½¸¾¸¿℄ ½¸¾℄ Ð× ½½¸³ÀÙÓ³℄ ½½¸³ÀÙÓ³℄ ØÖÙ ³ÀÙÓ³ ³ÙÓ³ Ð× ¾ ½ ØÖÙ ¾ ½º¼ ØÖÙ ¸¸½℄ ¸℄ ØÖÙ ¾¸½℄ ¾¸¼℄ ØÖÙ ØÖÙ Ð× ØÖÙ ³ÀÙÓ³ ³ÙÓ³ ØÖÙ Table 3.13: Examples for the comparison of tuples of type ×ØÖÒ cannot be mixed up with numbers, i.e., ×ØÖÒ values are considered to be not equal to values of other types. The four comparison operators compute the lexicographic order of tuples. On equal index positions the types must be identical, however, values of type ÒØÖ, ÖÐ and ÓÓÐÒ are adapted automatically. The lexicographic order applies to strings, and the ÓÓÐÒ Ð× is considered to be smaller than the boolean ØÖÙ (Ð× ØÖÙ). In the program ÓÑÔÖºÚ you can find examples for the comparison operators. 3.5.9 Boolean Operators ÒÓØ Ð Ð Ò Ð Ð ÓÖ Ð Ð ÜÓÖ Ð negation logical ’and’ logical ’or’ logical ’xor’ Table 3.14: Boolean operators The boolean operators Ò, ÓÖ, ÜÓÖ and ÒÓØ are defined only for tuples of length 1. Ð Ò Ð is set to ØÖÙ (1) if both operands are ØÖÙ (1), whereas Ð ÓÖ Ð returns ØÖÙ (1) if at least one HALCON 6.0
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HALCON Version 6.0 MVTec Software G
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About This Manual This manual is a
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Contents 1 Introducing HDevelop 1 1
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Contents iii comment . . . . . . .
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Chapter 1 Introducing HDevelop In f
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1.2. EXAMPLE SESSION 3 Figure 1.1:
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1.2. EXAMPLE SESSION 5 Figure 1.2:
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1.3. ADDITIONAL SOURCES OF INFORMAT
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Chapter 2 Graphical User Interface
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2.3. MAIN WINDOW 11 Figure 2.1: The
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2.3. MAIN WINDOW 13 A security chec
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2.3. MAIN WINDOW 15 a directory whe
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2.3. MAIN WINDOW 17 Figure 2.7: The
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2.3. MAIN WINDOW 19 and not HDevelo
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Page 51 and 52: 2.3. MAIN WINDOW 43 ËÙ×ØÓÒ×
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Page 57 and 58: 2.5. OPERATOR WINDOW 49 The program
Page 59 and 60: 2.5. OPERATOR WINDOW 51 Please refe
Page 61 and 62: 2.6. VARIABLE WINDOW 53 operator ha
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Page 65 and 66: 2.7. GRAPHICS WINDOW 57 Figure 2.38
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Page 69 and 70: 3.2. CONTROL TYPES AND CONSTANTS 61
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Page 85 and 86: 3.6. RESERVED WORDS 77 ÓÖ, ÜÓÖ
Page 87 and 88: 3.8. LIMITATIONS 79 In the followin
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Page 121 and 122: 5.11. ROAD SCENE 113 any case. All
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4 APPENDIX A. CONTROL Attention For
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6 APPENDIX A. CONTROL Result retur
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8 APPENDIX A. CONTROL ÚÙÔØÛÒ
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10 APPENDIX A. CONTROL HDevelop / 2
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12 APPENDIX B. DEVELOP Attention If
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14 APPENDIX B. DEVELOP Ú ÓÔÒ Û
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16 APPENDIX B. DEVELOP Ú Ò×ÔØ
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18 APPENDIX B. DEVELOP Parallelizat
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20 APPENDIX B. DEVELOP º ÀØ (inp
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22 APPENDIX B. DEVELOP ’black’
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24 APPENDIX B. DEVELOP Parameter º
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26 APPENDIX B. DEVELOP Parameter º
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28 APPENDIX B. DEVELOP If ÊÓÛ½
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30 APPENDIX B. DEVELOP Ú ×Ø ÛÒ
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32 APPENDIX B. DEVELOP Possible Suc
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34 APPENDIX B. DEVELOP See Also Ú
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36 APPENDIX B. DEVELOP HDevelop / 2
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38 APPENDIX C. GLOSSARY Operator wi
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40 Index Ú ×Ø ÔÖØ, 27, 39 Ú
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42 Index Operator Data base, 37 Nam
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44 Index HDevelop / 2000-11-16
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