0.9.0 - Added a working rasterization library.

This library uses braille characters and GPU raw instructions to display generated bitmaps in real-time, in high resolutions. A demo is available from command rtest.
2025-05-02 08:47:09 +02:00
parent 640be9230d
commit 6b8bee249a
4 changed files with 496 additions and 32 deletions
@@ -1,5 +1,91 @@
 local raster = import("raster")

-raster.drawPixel(4, 3, 0xFFFF00)
-raster.drawPixel(40, 34, nil, 0xFF00F)
-raster.drawPixel(3, 1)
+raster.init()
+
+--[[for i=4,20 do
+    raster.set(i,i)
+    raster.set(i,i+4,0xFF00FF)
+end]]
+
+--[[ for x=4,20 do
+    for y=4,20 do
+        if (x+y)%2==0 then
+            raster.set(x,y,0xFF00FF)
+        end
+    end
+end ]]
+
+local event = import("event")
+local x=0
+local y=0
+local vx=1
+local vy=1
+local col = 0x808080
+local i=0
+
+while event.pull("key_down",0)==nil do
+    i = i + 1
+    raster.set(x,y,col)
+
+    x = x + vx
+    y = y + vy
+
+    if x>raster.displayWidth then
+        x=raster.displayWidth
+        vx = -math.abs(vx)
+        col = math.random(0,0xFFFFFF)
+    end
+    if x<1 then
+        x=1
+        vx = math.abs(vx)
+        col = math.random(0,0xFFFFFF)
+    end
+    if y>raster.displayHeight-6 then
+        y=raster.displayHeight-6
+        vy = -math.abs(vy)
+        col = math.random(0,0xFFFFFF)
+    end
+    if y<1 then
+        y=1
+        vy = math.abs(vy)
+        col = math.random(0,0xFFFFFF)
+    end
+
+    if i>10 and i%15>0 then
+        while true do
+            local tries=0
+            local dx,dy=math.random(1,raster.displayWidth),math.random(1,raster.displayHeight-6)
+            if raster.get(dx,dy)~=0 then
+                raster.set(dx,dy,0)
+                break
+            end
+            tries = tries + 1
+            if tries>20 then
+                break
+            end
+        end
+    end
+
+    if i%10==0 then
+        raster.update()
+        coroutine.yield()
+    end
+end
+
+--[[ for i=0,360,4 do
+    local angle = i/180*math.pi
+    if false then
+        local x1,y1,x2,y2=raster.displayWidth/2,raster.displayHeight/2,raster.displayWidth/2+math.sin(angle)*80,raster.displayHeight/2+math.cos(angle)*80
+        raster.fillEllipse(x1,y1,x2,y2,0xFF00FF)
+        raster.update()
+        raster.fillEllipse(x1,y1,x2,y2,0x000000)
+    else
+        local x,y,c=raster.displayWidth/2,raster.displayHeight/2,math.abs(math.sin(angle)*100)
+        raster.drawCircle(x,y,c,0xFF00FF)
+        raster.update()
+        raster.drawCircle(x,y,c,0x000000)
+    end
+end ]]
+
+raster.free()
+termlib.cursorPosY=1