10/10/03

With screen type 21 option 1 specifies one of six predefined PCL cross-hatch patterns (patterns 1 - 6). option 2 is ignored.

With screen type 22, ESC*c#W command.

option 1 specifies the ID number of PCL user-defined pattern which is defined by the option 2 is ignored.

With fill screen type 130 option 1 specifies the percentage of shading ( 0 - 100 ): option 2 is ignored.

• If option 1 and option 2 are omitted, the most recently specified values for these parameters, for the specified screen type, are used.

All screening patterns use the current anchor corner.

Invoking the command with no parameter turns screening off. This is equivalent to SV0;

10 '-Screened Vectors-

20 WIDTH "LPT1:", 255

30 LPRINT CHR$(27); "E";

40 LPRINT CHR$(27); "%0B";

50 LPRINT "IN;SP1;";

60 LPRINT "SV1,15;PA4000,5000;CI500;"

70 LPRINT "SV1,50;PA5000,4000;CI400;"

80 LPRINT "SV1,100;PA6000,6000;CI300;"

90 LPRINT "PW10;SV21,5;PA2000,1000;PD;AA0,0,90;PC;"

100 LPRINT "PW5;SV21,3;PA6000,6000;CI500;"

110 LPRINT "PW7;SV21,6;PA2000,8000;PDPA5000,8000;PU;"

120 LPRINT "PW7;SV21,6;PA2000,8000;PDPA5000,8000;PU;"

130 LPRINT "1,1,0,0,0,0,0,0,1,1,";

140 LPRINT "0,0,1,1,0,0,1,1,0,0,";

150 LPRINT "0,0,0,0,1,1,0,0,0,0,";

160 LPRINT "0,0,1,1,0,0,1,1,0,0,";

170 LPRINT "1,1,0,0,0,0,0,0,1,1;";

180 LPRINT "PW15;SV2,3;PA4000,2000;PM0;PD6000,2000,6000,4000,4000,4000;PM1;PM2;EP;" 190 LPRINT CHR$(27); "%0A";

200 LPRINT CHR$(27); "E";

210 END

<Sample 44>

TR - Transparency mode

TR [ n ] [;]

n ; transparency type

This command turns transparency mode on and off. Transparency mode defines how source and destination graphics images interact.

n is either 0 (off) or 1(on).

When transparency mode is on, the white parts of a source image (the image that is being superimposed on

the destination image) do not affect the destination image - that is, part of the destination image will be visible beneath the source image.

When transparency mode is off the destination image is not visible beneath the source image.

Invoking the command with no parameter turns transparency mode on. This is equivalent to TR1;

• An Esc E reset, a control panel reset, the IN command and the DF command all turn transparency mode on.

10 'Transparency Mode-

20 WIDTH "LPT1:", 255

30 LPRINT CHR$(27); "E";

40 LPRINT CHR$(27); "%0b";

50 LPRINT "IN;SP1;";

60 'PART1 TR1

70 'Original Destination 1

80 LPRINT "TR1;PA1900,4900;PM0;PM3100;4900,2500,6100;PM1;"

90 LPRINT "PM2;FP;"

100 'Source 1

110 LPRINT "FT10,50;PA2000,5000;RR500,500;PA2500,5500;RR500,500;"

120 LPRINT "FT10,1;PA2500,5000;RR500,500;PA2000,5500;RR500,500;FT;"

130 'PART2 TR0

140 'Original Destination 2

150 LPRINT "TR0;PA3900,4900;PM0;PA5100,4900,4500,6100;PM1;"

160 LPRINT "PM2;FP;"

CHAPTER 4 HP-GL/2 - 36

Page 176
Image 176
Homelite HL-P2500, HL-1660E, HL-2400CE, HL-1450, HL-1050, HL-1250, HL-1470N, HL-1070, 2060, HL-1270N TR Transparency mode, TR n