FUNCTION_BLOCK camera	// Block definition (there may be more than one block per file)

VAR_INPUT				// Define input variables
	price : REAL;
	pixelDepth : REAL;
	pixels : REAL;
	maxISO : REAL;
	weight : REAL;
	autoFocus : REAL;
	launchDate : REAL;
	frameRate : REAL;
	touchScreen : REAL;
	video : REAL;
	flash : REAL;
	waterproof : REAL;
	bluetooth : REAL;
	gps : REAL;
	isMetal : REAL;
END_VAR

VAR_OUTPUT				// Define output variable
	travel : REAL;
    event : REAL;
    sports : REAL;
    scenery : REAL;
    portrait : REAL;
    astronomy : REAL;
    newModel : REAL;
    durableBuild : REAL;
    lightBuild : REAL;
    lowPrice : REAL;
END_VAR

FUZZIFY price
	TERM low := (0, 1) (1000, 0) ;
	TERM medium := (600, 0) (800,1) (1500,1) (1700,0);
	TERM high := (1500, 0) (1700, 1);
END_FUZZIFY

FUZZIFY pixelDepth
	TERM low := (0, 1) (16, 0) ;
	TERM medium := (10, 0) (12,1) (20,1) (26,0);
	TERM high := (18, 0) (36, 1);
END_FUZZIFY

FUZZIFY pixels
	TERM low := (0, 1) (12000000, 0) ;
	TERM medium := (8000000, 0) (15000000,1) (20000000,1) (26000000,0);
	TERM high := (20000000, 0) (40000000, 1);
END_FUZZIFY

FUZZIFY maxISO
	TERM low := (0, 1) (6400, 0) ;
	TERM medium := (3200, 0) (6400,1) (12800,1) (25600,0);
	TERM high := (12800, 0) (51200, 1);
END_FUZZIFY

FUZZIFY weight
	TERM light := (0, 1) (500, 0) ;
	TERM medium := (300, 0) (500,1) (700,1) (1000,0);
	TERM heavy := (800, 0) (1000, 1);
END_FUZZIFY

FUZZIFY autoFocus
	TERM low := (0, 1) (15, 0) ;
	TERM medium := (10, 0) (15,1) (25,1) (30,0);
	TERM high := (25, 0) (50, 1);
END_FUZZIFY

FUZZIFY launchDate
	TERM antique := (1000000000000, 1) (1300000000000, 0) ;
	TERM earlier := (1200000000000, 0) (1300000000000,1) (1350000000000,1) (1450000000000,0);
	TERM recent := (1400000000000, 0) (1500000000000, 1);
END_FUZZIFY

FUZZIFY frameRate
	TERM low := (0, 1) (4, 0) ;
	TERM medium := (3, 0) (8,1) (10,1) (12,0);
	TERM high := (10, 0) (12, 1);
END_FUZZIFY

FUZZIFY touchScreen
	TERM no := (0, 1) (1, 0) ;
	TERM yes := (0, 0) (1, 1) ;
END_FUZZIFY

FUZZIFY video
	TERM no := (0, 1) (1, 0) ;
	TERM yes := (0, 0) (1, 1) ;
END_FUZZIFY

FUZZIFY flash
	TERM no := (0, 1) (1, 0) ;
	TERM yes := (0, 0) (1, 1) ;
END_FUZZIFY

FUZZIFY waterproof
	TERM no := (0, 1) (1, 0) ;
	TERM yes := (0, 0) (1, 1) ;
END_FUZZIFY

FUZZIFY bluetooth
	TERM no := (0, 1) (1, 0) ;
	TERM yes := (0, 0) (1, 1) ;
END_FUZZIFY

FUZZIFY gps
	TERM no := (0, 1) (1, 0) ;
	TERM yes := (0, 0) (1, 1) ;
END_FUZZIFY

FUZZIFY isMetal
	TERM no := (0, 1) (1, 0) ;
	TERM yes := (0, 0) (1, 1) ;
END_FUZZIFY

DEFUZZIFY travel
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY event
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY sports
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY scenery
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY portrait
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY astronomy
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY newModel
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY durableBuild
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY lightBuild
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

DEFUZZIFY lowPrice
	TERM veryBad := (0,1) (0.2,0);
	TERM bad := (0,0) (0.1,1) (0.5,0);
	TERM average:= (0,0) (0.5,1) (1,0);
	TERM good:= (0.5,0) (0.9,1) (1,0);
	TERM veryGood:= (0.8,0) (1,1);
	METHOD : COG;
	DEFAULT := 0.5;
END_DEFUZZIFY

RULEBLOCK travel
	AND : MIN;
	RULE 1 : IF weight IS light THEN travel IS good;
	RULE 2 : IF video IS yes THEN travel IS good;
	RULE 3 : IF gps IS yes THEN travel IS good;
	RULE 4 : IF flash IS no THEN travel IS bad;
	RULE 5 : IF weight IS heavy THEN travel IS veryBad;
END_RULEBLOCK

RULEBLOCK event
	AND : MIN;

	RULE 1 : IF frameRate IS high THEN event IS good;
	RULE 2 : IF gps IS yes THEN event IS good;
	RULE 3 : IF bluetooth IS yes THEN event IS good;
	RULE 4 : IF flash IS no THEN event IS bad;
END_RULEBLOCK

RULEBLOCK sports
	AND : MIN;

	RULE 1 : IF frameRate IS high THEN sports IS veryGood;
	RULE 2 : IF autoFocus IS high THEN sports IS veryGood;
	RULE 3 : IF pixels IS high THEN sports IS good;
	RULE 4 : IF frameRate IS low THEN sports IS veryBad;
	RULE 5 : IF autoFocus IS low THEN sports IS veryBad;
END_RULEBLOCK

RULEBLOCK scenery
	AND : MIN;

	RULE 1 : IF pixels IS high THEN scenery IS veryGood;
	RULE 2 : IF pixelDepth IS high THEN scenery IS veryGood;
	RULE 3 : IF maxISO IS high THEN scenery IS good;
	RULE 4 : IF gps IS yes THEN scenery IS good;
	RULE 5 : IF pixelDepth IS low THEN scenery IS bad;
END_RULEBLOCK

RULEBLOCK portrait
	AND : MIN;

	RULE 1 : IF pixels IS high THEN portrait IS good;
	RULE 2 : IF pixelDepth IS high THEN portrait IS good;
	RULE 3 : IF pixelDepth IS low THEN portrait IS bad;
END_RULEBLOCK

RULEBLOCK astronomy
    AND : MIN;

    RULE 1 : IF pixels IS high THEN astronomy IS good;
    RULE 2 : IF pixelDepth IS high THEN astronomy IS good;
    RULE 3 : IF maxISO IS high THEN astronomy IS good;
    RULE 4 : IF maxISO IS low THEN astronomy IS veryBad;
    RULE 5 : IF pixels IS low THEN astronomy IS veryBad;
END_RULEBLOCK

RULEBLOCK newModel
	AND : MIN;

	RULE 1 : IF launchDate IS antique THEN newModel IS bad;
    	RULE 2 : IF launchDate IS earlier THEN newModel IS average;
    	RULE 3 : IF launchDate IS recent THEN newModel IS good;
END_RULEBLOCK

RULEBLOCK durableBuild
	AND : MIN;

	RULE 1 : IF isMetal IS no THEN durableBuild IS bad;
    	RULE 2 : IF isMetal IS yes THEN durableBuild IS good;
END_RULEBLOCK

RULEBLOCK lightBuild
	AND : MIN;

	RULE 1 : IF weight IS heavy THEN lightBuild IS bad;
	RULE 1 : IF weight IS medium THEN lightBuild IS average;
    	RULE 2 : IF weight IS light THEN lightBuild IS good;
END_RULEBLOCK

RULEBLOCK lowPrice
	AND : MIN;

	RULE 1 : IF price IS high THEN lowPrice IS bad;
	RULE 1 : IF price IS medium THEN lowPrice IS average;
    	RULE 2 : IF price IS low THEN lowPrice IS good;
END_RULEBLOCK

END_FUNCTION_BLOCK