216 lines
8.3 KiB
Plaintext
216 lines
8.3 KiB
Plaintext
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''***************************************
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''* Graphics Palette *
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''* Author: Chip Gracey *
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''* Copyright (c) 2006 Parallax, Inc. *
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''* See end of file for terms of use. *
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''***************************************
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CON
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_clkmode = xtal1 + pll16x
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_xinfreq = 5_000_000
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_free = ($3000 + $3000) >> 2 'accomodate bitmap buffers
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_stack = $100 'insure sufficient stack
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x_tiles = 16
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y_tiles = 12
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paramcount = 14
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bitmap_base = $2000
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display_base = $5000
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VAR
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long mousex, mousey
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long tv_status '0/1/2 = off/visible/invisible read-only
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long tv_enable '0/? = off/on write-only
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long tv_pins '%ppmmm = pins write-only
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long tv_mode '%ccinp = chroma,interlace,ntsc/pal,swap write-only
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long tv_screen 'pointer to screen (words) write-only
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long tv_colors 'pointer to colors (longs) write-only
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long tv_hc 'horizontal cells write-only
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long tv_vc 'vertical cells write-only
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long tv_hx 'horizontal cell expansion write-only
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long tv_vx 'vertical cell expansion write-only
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long tv_ho 'horizontal offset write-only
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long tv_vo 'vertical offset write-only
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long tv_broadcast 'broadcast frequency (Hz) write-only
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long tv_auralcog 'aural fm cog write-only
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word screen[x_tiles * y_tiles]
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long colors[64]
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OBJ
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tv : "bel-tv"
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gr : "bel-graphics"
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mouse : "bel-mouse"
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PUB start | x, y, i, c, k, col
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'start tv
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longmove(@tv_status, @tvparams, paramcount)
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tv_screen := @screen
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tv_colors := @colors
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tv.start(@tv_status)
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'init colors
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repeat i from $00 to $0F
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case i
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5..10 : c := $01000000 * (i - 5) + $02020507
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other : c := $07020504
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colors[i] := c
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repeat i from $10 to $1F
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colors[i] := $10100000 * (i & $F) + $0B0A0507
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repeat i from $20 to $2F
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colors[i] := $10100000 * (i & $F) + $0D0C0507
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repeat i from $30 to $3F
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colors[i] := $10100000 * (i & $F) + $080E0507
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'init tile screen
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repeat x from 0 to tv_hc - 1
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repeat y from 0 to tv_vc - 1
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case y
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0, 2 : i := $30 + x
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3..4 : i := $20 + x
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5..6 : i := $10 + x
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8 : i := x
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other: i := 0
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screen[x + y * tv_hc] := i << 10 + display_base >> 6 + x * tv_vc + y
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'start and setup graphics
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gr.start
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gr.setup(16, 12, 0, 0, bitmap_base)
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'start mouse
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mouse.start(19, 18)
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mousex := 128
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mousey := 35
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repeat
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'clear bitmap
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gr.clear
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'draw color samples
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gr.width(14)'(29)
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'draw saturated samples
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gr.color(3)
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repeat x from 0 to 15
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gr.plot(x << 4 + 7, 183)
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'draw gradient samples
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repeat y from 2 to 6
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gr.color(y & 1 | 2)
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repeat x from 0 to 15
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gr.plot(x << 4 + 7, 183 - y << 4)
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'draw monochrome samples
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gr.color(3)
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repeat x from 5 to 10
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gr.plot(x << 4 + 7, 55)
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'draw mouse pointer
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gr.width(0)
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mousex := mousex + mouse.delta_x #> 0 <# 251
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mousey := mousey + mouse.delta_y #> 4 <# 191
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gr.width(0)'(29)
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gr.color(4)
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gr.plot(mousex, mousey)
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gr.pix(mousex, mousey, 0, @pixdef)
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'check mouse position
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c~~
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if mousey => 176
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c := (mousex & $F0 + $8)
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elseif mousey => 80 and mousey < 160
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c := (mousex & $F0 + $E - (159 - mousey) >> 4)
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elseif mousey => 48 and mousey < 64 and mousex => 80 and mousex < 176
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c := (mousex - 80) >> 4 + 2
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'show appropriate message
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if c => 0
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gr.colorwidth(3, 10)
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gr.textmode(3, 3, 8, %0101)
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hexstring[0] := hex(c >> 4)
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hexstring[1] := hex(c & $F)
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gr.text(128, 17, @colorstring)
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colors.byte[2] := c
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gr.colorwidth(2, 6)
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gr.text(128, 17, @colorstring)
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else
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gr.colorwidth(3, 0)
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gr.textmode(2, 2, 6, %0101)
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gr.text(128, 20, string("Point mouse to color"))
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'copy bitmap to display
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gr.copy(display_base)
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'animate mouse pointer color
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c := k++ & 3 + 4
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i := -3
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repeat 64
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colors.byte[i += 4] := c
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'if right mouse button pressed, exit
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if mouse.button(1)
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reboot
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PRI hex(value) : chr
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return lookupz(value : "0".."9", "A".."F")
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DAT
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tvparams long 0 'status
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long 1 'enable
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long %010_0101 'pins
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long %0000 'mode
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long 0 'screen
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long 0 'colors
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long x_tiles 'hc
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long y_tiles 'vc
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long 10 'hx
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long 1 'vx
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long 0 'ho
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long 0 'vo
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long 60_000_000 'broadcast
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long 0 'auralcog
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pixdef word 'arrow pointer
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byte 1,5,0,4
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word %%11110000
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word %%11100000
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word %%11110000
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word %%10111000
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word %%00011000
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colorstring byte "COLOR "
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hexstring byte "00",0
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{{
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┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
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│ TERMS OF USE: MIT License │
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├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
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│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation │
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│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, │
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│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
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│is furnished to do so, subject to the following conditions: │
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│ │
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│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
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│ │
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│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE │
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│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR │
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│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, │
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│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. │
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└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
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}}
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