Âñòðîåííûå ïðåäèêàòû Ïðîëîãà - ÷àñòü 2

ÒÎ×ÊÀ (õ,ó,ñ);

ËÈÍÈß (x,y,u,v,c);

ÎÊÐÓÆÍÎÑÒÜ (õ,ó,ñ);

ãäå (õ,ó) è (u,v) - êîîðäèíàòû òî÷åê íà ýêðàíå, à ñ - öâåò òî÷êè. Êîíêðåòíûå çíà÷åíèÿ êîäîâ öâåòîâ è äèàïàçîíû çíà÷åíèé êîîðäè­íàò òî÷åê íà ýêðàíå çàâèñÿò îò òèïà ÝÂÌ.

À. Ãðàôè÷åñêèå ïðåäèêàòû:

Ïðåäèêàò:                               Ñìûñë:                                   Ïðèìåð:

ÔÎÍ (ñ)                                 çàäàíèå öâåòà ôîíà               ÔÎÍ (8)        

ÒÎ×ÊÀ (õ,ó,ñ)                      âûâîä òî÷êè                          ÒÎ×ÊÀ (0,0,2)

ËÈÍÈß (x,y,u,v,c)                âûâîä îòðåçêà ëèíèè            ËÈÍÈß (0,0,50,50,4)

ÎÊÐÓÆÍÎÑÒÜ (õ,ó,ñ)       âûâîä îêðóæíîñòè                ÎÊÐÓÆÍÎÑÒÜ (90,90,10, 6)

ÇÀÊÐÀÑÊÀ (õ,ó,ñ)              çàêðàñêà ôèãóð                      ÇÀÊÐÀÑÊÀ (10,40,8)

Á. Ïðåäèêàòû ââîäà-âûâîäà:

Ïðåäèêàò:                               Ñìûñë:                                   Ïðèìåð:

ÂÛÂÎÄ (<3íà÷åíèå>)        âûâîä íàáîðà çíà÷åíèé        ÂÛÂÎÄ («èìÿ», õ)

ÂÂÎÄÑÈÌÂ (s)                   ââîä ñèìâîëüíûõ äàííûõ

ÂÂÎÄÖÅË (n)                      ââîä ÷èñëîâûõ äàííûõ

ÏÑ                                          ïåðåâîä ñòðîêè

Â. Ëîãè÷åñêèå ïðåäèêàòû:

Ïðåäèêàò:                               Ñìûñë:                                   Ïðèìåð:

ÈÑÒÈÍÀ                              ëîãè÷åñêàÿ êîíñòàíòà

ËÎÆÜ                                               ëîãè÷åñêàÿ êîíñòàíòà

ÍÅ (<Ïðåäèêàò>)                 îòðèöàíèå ïðåäèêàòà      ÍÅ (ÐÀÂÍÎ (z,0))

Ñîäåðæàíèå  Íàçàä  Âïåðåä

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