From cd1664f33b8a6c455c0ca220bd3875df99846ed4 Mon Sep 17 00:00:00 2001
From: Astoria <netadmin@broken-moon.net>
Date: Sat, 31 Dec 2022 19:58:06 -0600
Subject: [PATCH] add drawtext

---
 draw/characters | 35 +++++++++++++++++++++++++++++++++++
 draw/drawtext   | 40 ++++++++++++++++++++++++++++++++++++++++
 drawtest        |  6 ++++++
 3 files changed, 81 insertions(+)
 create mode 100644 draw/characters
 create mode 100644 draw/drawtext
 create mode 100644 drawtest

diff --git a/draw/characters b/draw/characters
new file mode 100644
index 0000000..4a1c312
--- /dev/null
+++ b/draw/characters
@@ -0,0 +1,35 @@
+--Tom Thumb font https://robey.lag.net/2010/01/23/tiny-monospace-font.html
+characters = {}
+h = 3
+v = 5
+characters["a"] = {{false, true, false}, {true, false, true}, {true, true, true}, {true, false, true}, {true, false, true}}
+characters["b"] = {{true, true, false}, {true, false, true}, {true, true, false}, {true, false, true}, {true, true, false}}
+characters["c"] = {{false, true, true}, {true, false, false}, {true, false, false}, {true, false, false}, {false, true, true}}
+characters["d"] = {{true, true, false}, {true, false, true}, {true, false, true}, {true, false, true}, {true, true, false}}
+characters["e"] = {{true, true, true}, {true, false, false}, {true, true, true}, {true, false, false}, {true, true, true}}
+characters["f"] = {{true, true, true}, {true, false, false}, {true, true, true}, {true, false, false}, {true, false, false}}
+characters["g"] = {{false, true, true}, {true, false, false}, {true, true, true}, {true, false, true}, {false, true, true}}
+characters["h"] = {{true, false, true}, {true, false, true}, {true, true, true}, {true, false, true}, {true, false, true}}
+characters["i"] = {{true, true, true}, {false, true, false}, {false, true, false}, {false, true, false}, {true, true, true}}
+characters["j"] = {{false, false, true}, {false, false, true}, {false, false, true}, {true, false, true}, {false, true, false}}
+characters["k"] = {{true, false, true}, {true, false, true}, {true, true, false}, {true, false, true}, {true, false, true}}
+characters["l"] = {{true, false, false}, {true, false, false}, {true, false, false}, {true, false, false}, {true, true, true}}
+characters["m"] = {{true, false, true}, {true, true, true}, {true, true, true}, {true, false, true}, {true, false, true}}
+characters["n"] = {{true, false, true}, {true, true, true}, {true, true, true}, {true, true, true}, {true, false, true}}
+characters["o"] = {{false, true, false}, {true, false, true}, {true, false, true}, {true, false, true}, {false, true, false}}
+characters["p"] = {{true, true, false}, {true, false, true}, {true, true, false}, {true, false, false}, {true, false, false}}
+characters["q"] = {{false, true, false}, {true, false, true}, {true, false, true}, {true, true, true}, {false, true, true}}
+characters["r"] = {{true, true, false}, {true, false, true}, {true, true, true}, {true, true, false}, {true, false, true}}
+characters["s"] = {{false, true, true}, {true, false, false}, {false, true, false}, {false, false, true}, {true, true, false}}
+characters["t"] = {{true, true, true}, {false, true, false}, {false, true, false}, {false, true, false}, {false, true, false}}
+characters["u"] = {{true, false, true}, {true, false, true}, {true, false, true}, {true, false, true}, {false, true, true}}
+characters["v"] = {{true, false, true}, {true, false, true}, {true, false, true}, {true, false, true}, {false, true, false}}
+characters["w"] = {{true, false, true}, {true, false, true}, {true, true, true}, {true, true, true}, {true, false, true}}
+characters["x"] = {{true, false, true}, {true, false, true}, {false, true, false}, {true, false, true}, {true, false, true}}
+characters["y"] = {{true, false, true}, {true, false, true}, {false, true, false}, {false, true, false}, {false, true, false}}
+characters["z"] = {{true, true, true}, {false, false, true}, {false, true, false}, {true, false, false}, {true, true, true}}
+characters[" "] = {{}, {}, {}, {}, {}}
+characters["."] = {{}, {}, {}, {}, {false, true, false}}
+characters["!"] = {{false, true, false}, {false, true, false}, {false, true, false}, {}, {false, true, false}}
+characters["?"] = {{true, true, true}, {false, false, true}, {false, true, false}, {}, {false, true, false}}
+characters["NOSYMBOL"] = {{false, false, false}, {true, true, false}, {true, false, true}, {true,true,true}, {true, false, true}}
\ No newline at end of file
diff --git a/draw/drawtext b/draw/drawtext
new file mode 100644
index 0000000..d21208b
--- /dev/null
+++ b/draw/drawtext
@@ -0,0 +1,40 @@
+--Get Font
+dofile("draw/characters")
+
+--For each letter draw a character.
+function drawText(gpu, cstring, x, y, red, green, blue, alpha)
+  for pos=1,string.len(cstring),1 do
+    drawChar(gpu, string.sub(string.lower(cstring), pos, pos), x + ((pos - 1) * 4), y, red, green, blue, alpha)
+  end
+end
+--Draw a single character.
+function drawChar(gpu, character, x, y, red, green, blue, alpha)
+  gpured, gpublue, gpugreen, gpualpha = gpu.getColor()
+  red = red or gpured
+  blue = blue or gpublue
+  green = green or gpugreen
+  alpha = alpha or gpualpha
+  if (type(alpha) == "nil") then
+    alpha = 255
+  end
+  gpu.setColor(red, green, blue, alpha)
+  for ix=1,h,1 do
+    for iy=1,v,1 do
+      if (type(characters[character]) == "table") then
+        if(characters[character][iy][ix] == true) then
+          gpu.plot(ix+x,iy+y)
+        end
+      else
+        if(characters["?"][iy][ix] == true) then
+          gpu.setColor(255, 0, 0, 255)
+          gpu.plot(ix+x,iy+y)
+        else
+          gpu.setColor(0, 0, 0, 255)
+          gpu.plot(ix+x,iy+y)
+        end
+        gpu.setColor(red, green, blue, alpha)
+      end
+    end
+  end
+end
+
diff --git a/drawtest b/drawtest
new file mode 100644
index 0000000..ee46982
--- /dev/null
+++ b/drawtest
@@ -0,0 +1,6 @@
+os.loadAPI("drawtext")
+gpu = peripheral.wrap("right")
+gpu.setColor(0,0,0)
+gpu.fill()
+gpu.setColor(255,255,255)
+drawtext.drawText(gpu, "test#", 1, 3)