BC:Bitplane Colour BL:Bitplane Logic
BD:Bitplane Display BR:Bitplane Result
BC [n1],n2[,n3,n4] n1: Bitplane to be coloured <last bitplane> n2: Red grey level (or colour code) <0> n3: Green grey level <0> n4: Blue grey level <0>If n2,n3,n4 are all specified, the graphic plane colour is set explicitly to the specified RGB colour. If n3,n4 are not specified, and n2 is between 1 and 16, then n2 represents a colour code.
n1 is the bitplane, within an unspecified image plane, which will be assigned the given colour.
Bitplanes are bit-sliced planes within an image plane, and are numbered 1 to 8. Data are entered into bitplanes with the task BBT to create an O-map, which is then loaded to an image channel on the display before applying this group of interactive bitplane commands in DCP.
The available colour codes and their RGB values are listed below:
n2 Colour Red Green Blue 1 Light Pink 255 127 255 2 Pink 255 63 255 3 Magenta 255 0 255 4 Red 255 0 0 5 Light Orange 255 127 0 6 Orange 255 63 0 7 Yellow 255 255 0 8 White 255 255 255 9 Black 0 0 0 10 Forest Green 0 127 0 11 Dark Green 0 63 0 12 Green 0 255 0 13 Blue 0 0 255 14 Turquoise 0 127 255 15 Dark Turquoise 0 63 255 16 Cyan 0 255 255
BD [n1,n2] n1: Image plane of bitplane <last image plane> n2: Bitplane to display <last bitplane>n1 is the image plane onto which an O-map (created with BBT) has been loaded. The data in this image plane are organized in bitplanes.
n2 is the bitplane within the image plane that is to be displayed.
Bitplanes are bit-sliced planes within an image plane, and are numbered 1 to 8. Data are entered into bitplanes with the task BBT to create an O-map. This O-map is then loaded to an image channel on the display before applying this group of interactive bitplane commands in DCP.
BL [n1],n2 n1: Image plane of bitplane <last image plane> n2: Logical expression of bitplanes <>n1 is the image plane onto which an O-map (created with BBT) has been loaded. The data in this image plane are organized in bitplanes.
n2 is a logical expression consisting of any syntactically correct combination of logical operators, bitplane numbers, and parentheses. The simple logical operators are as follows:
Operator Type Example +-------------------------+ AND binary 1 AND 2 OR binary 3 OR 4 XOR binary 1 XOR 4 SUB binary 5 SUB 3 NOT unary NOT (6)These simple operators can be combined into more complex forms such as:
DCP>BL1, (1 AND 2) XOR (3 OR 4) XOR NOT (6)The simple logical operators have the following truth tables:
i | j | i AND j i | j | i OR j i | j | i XOR j +--+---+-------- ---+---+------- ---+---+-------- 0 | 0 | 0 0 | 0 | 0 0 | 0 | 0 0 | 1 | 0 0 | 1 | 1 0 | 1 | 1 1 | 0 | 0 1 | 0 | 1 1 | 0 | 1 1 | 1 | 1 1 | 1 | 1 1 | 1 | 0 i | j | i SUB j = i AND NOT j i | NOT i +--+---+-------- ---+------ 0 | 0 | 0 0 | 1 0 | 1 | 0 1 | 0 1 | 0 | 1 1 | 1 | 0The logical operation is a non-destructive operation (does not change the data), that is performed using the display pseudocolour table. Each logical expression causes the colour table to be manipulated such that only the results of the logical expression are visible. The colour in which the results are shown can be modified with the BR (Bitplane Result) command.
See the task OLO (Overlay Logical Operation) for database logical operations using a pseudocolour table saved from the display.
BR n1[,n2,n3] n1: Red grey level (or colour code) <0> n2: Green grey level <0> n3: Blue grey level <0>If n1,n2,n3 are all specified, the bitplane colour is set explicitly to the specified RGB colour. If n2,n3 are not specified, and n1 is between 1 and 16, then n1 represents a colour code.
The available colour codes and their RGB values are shown below:
n1 Colour Red Green Blue 1 Light Pink 255 127 255 2 Pink 255 63 255 3 Magenta 255 0 255 4 Red 255 0 0 5 Light Orange 255 127 0 6 Orange 255 63 0 7 Yellow 255 255 0 8 White 255 255 255 9 Black 0 0 0 10 Forest Green 0 127 0 11 Dark Green 0 63 0 12 Green 0 255 0 13 Blue 0 0 255 14 Turquoise 0 127 255 15 Dark Turquoise 0 63 255 16 Cyan 0 255 255