tools
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visionmercer
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2 changed files with 235 additions and 32 deletions
145
include/tools.bm
Normal file
145
include/tools.bm
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@ -0,0 +1,145 @@
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sub filledPolygon (Points() as single, col as long)
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dim i as integer, j as integer
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dim x1 as single, y1 as single, x2 as single, y2 as single
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dim intersectX as single
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' get the number of points from the upper bound of the array
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' divide by 2 since we have x,y pairs
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dim numPoints as integer
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numPoints = (ubound(Points) + 1) \ 2
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' loop through each scanline (rows of pixels)
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dim intersections(100) as single
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dim numIntersections as integer
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for y = 0 to _height ' adjust for screen height
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numIntersections = 0
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' check for intersections between the polygon edges and this scanline
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for i = 0 to numPoints - 1
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x1 = Points(i * 2)
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y1 = Points(i * 2 + 1)
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x2 = Points(((i + 1) mod numPoints) * 2)
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y2 = Points(((i + 1) mod numPoints) * 2 + 1)
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' check if the scanline intersects with the edge of the polygon
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if ((y1 > y and y2 <= y) or (y2 > y and y1 <= y)) then
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' calculate intersection point with the scanline
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intersectX = x1 + (y - y1) * (x2 - x1) / (y2 - y1)
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intersections(numIntersections) = intersectX
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numIntersections = numIntersections + 1
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end if
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next i
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' sort the intersections (sort by x-coordinates)
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for i = 0 to numIntersections - 1
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for j = i + 1 to numIntersections - 1
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if intersections(i) > intersections(j) then
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swap intersections(i), intersections(j)
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end if
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next j
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next i
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' fill the area between pairs of intersections
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for i = 0 to numIntersections - 1 step 2
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line(intersections(i),y)-(intersections(i+1),y),col
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next i
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next y
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end sub
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sub thickline(x1,y1,x2,y2, col as long)
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if state.brushsize=1 then
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line(x1,y1)-(x2,y2),col
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else
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dim tempimg as long
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dim od as long
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tempimg=_newimage(10,10,32)
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od =_dest
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_dest tempimg
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pset(0,0),col
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_dest od
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a = _Atan2(y2 - y1, x2 - x1)
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a = a + _Pi / 2
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x0 = 0.5 * state.brushsize * Cos(a)
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y0 = 0.5 * state.brushsize * Sin(a)
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_maptriangle _seamless(0,0)-(0,0)-(0,0),tempimg to(x1-x0, y1-y0)-(x1+x0,y1+y0)-(x2+x0,y2+y0),,_smooth
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_maptriangle _seamless(0,0)-(0,0)-(0,0),tempimg to(x1-x0, y1-y0)-(x2+x0,y2+y0)-(x2-x0,y2-y0),,_smooth
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_freeimage tempimg
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end if
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end sub
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Sub polygon (pa() As Long,col as long)
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For i = 2 To UBound(pa) Step 2
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thickLine pa(i - 2), pa(i - 1),pa(i), pa(i + 1),col
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Next i
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thickLine pa(i - 1), pa(i - 2),pa(0), pa(1),col
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End Sub
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sub thickcircle(x, y, r, col as long)
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if state.brushsize <= 1 then
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circle (x, y), r, col
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else
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dim rp as single, rm as single, rp2 as single, rm2 as single
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dim rpi2 as single, rmi2 as single, sp as single, sm as single
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dim i as single
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rp = r + state.brushsize / 2
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rm = r - state.brushsize / 2
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' If the brush is thicker than the circle, it's just a filled circle
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if rm < 0 then
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filledcircle x, y, rp, col
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exit sub
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end if
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rp2 = rp ^ 2
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rm2 = rm ^ 2
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' Outer edges (Top/Bottom caps)
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for i = -rp to -rm step .2
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rpi2 = rp2 - i ^ 2
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if rpi2 < 0 then rpi2 = 0 ' Safety Gate
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sp = sqr(rpi2)
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line (x + i, y - sp)-(x + i, y + sp), col, bf
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next
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' Side rings (where the hole in the middle exists)
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for i = -rm to rm step .2
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rpi2 = rp2 - i ^ 2
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rmi2 = rm2 - i ^ 2
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if rpi2 < 0 then rpi2 = 0 ' Safety Gate
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if rmi2 < 0 then rmi2 = 0 ' Safety Gate
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sp = sqr(rpi2)
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sm = sqr(rmi2)
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' Draw the top and bottom segments only
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line (x + i, y + sm)-(x + i, y + sp), col, bf
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line (x + i, y - sm)-(x + i, y - sp), col, bf
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next
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' Outer edges (Right cap)
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for i = rm to rp step .2
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rpi2 = rp2 - i ^ 2
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if rpi2 < 0 then rpi2 = 0 ' Safety Gate
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sp = sqr(rpi2)
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line (x + i, y - sp)-(x + i, y + sp), col, bf
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next
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end if
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end sub
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sub filledcircle(x,y,r,col as long)
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dim __radius as integer, radiuserror as integer
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dim tx as integer, ty as integer
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__radius=abs(r)-1
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radiuserror=-__radius
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tx=__radius
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ty=0
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line (x-tx,y)-(x+tx,y),col
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while tx>ty
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radiuserror=radiuserror+ty*2+1
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if radiuserror >= 0 then
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if tx<>ty+1 then
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line (x-ty,y-tx)-(x+ty,y-tx),col
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line (x-ty,y+tx)-(x+ty,y+tx),col
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end if
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tx=tx-1
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radiuserror=radiuserror-tx*2
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end if
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ty=ty+1
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line (x-tx,y-ty)-(x+tx,y-ty),col
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line (x-tx,y+ty)-(x+tx,y+ty),col
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wend
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end sub
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122
pixler.bas
122
pixler.bas
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@ -5,6 +5,10 @@ type statetype
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offsetX as single
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offsetY as single
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zoom as single
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brushsize as integer
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startX as integer
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startY as integer
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isDrawing as integer
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end type
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type layertype
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@ -14,11 +18,10 @@ type layertype
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kind as long
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end type
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redim shared layers(1) as layertype
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redim shared layers(2) as layertype
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dim shared state as statetype
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dim shared mouseclicked as integer
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dim shared mousedown as integer
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dim shared rmouseclicked as integer
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@ -33,6 +36,7 @@ dim as integer ch1,ch2,ch3,bt
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loadpalette "endesga16",pal()
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layers(0).ihandle=_newimage(640,350,32)
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layers(1).ihandle=_newimage(640,350,32)
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layers(2).ihandle=_newimage(640,350,32)
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_dest layers(0).ihandle
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line (0,0)-(_width-1,_height-1),_rgb32(255),bf
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_dest 0
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@ -42,11 +46,13 @@ state.bcolor = 2
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state.zoom = 1.0
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state.offsetX = 70 + 20 ' To the right of the toolbox
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state.offsetY = 20
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state. brushsize = 1
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dim lastMX, lastMY
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dim diffX as integer
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dim diffY as integer
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dim oldWidth as integer
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dim oldHeight as integer
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dim keyin as string
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oldWidth=_width
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oldHeight=_height
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@ -62,9 +68,9 @@ do
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cls
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line (0,0)-(_width-1,_height-1),backgroundcolor1,bf
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while _mouseinput:mw=mw+_mousewheel:wend
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' --- Global Mouse Handling (Left & Right) ---
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'Mouse Handling
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while _mouseinput:mw=mw+_mousewheel:wend
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mouseclicked = 0
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rmouseclicked = 0
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if mousedown = -1 and _mousebutton(1) = 0 then mouseclicked = -1
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@ -85,10 +91,19 @@ do
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if state.zoom < 0.1 then state.zoom = 0.1
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mw=0
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end if
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'state.zoom=mw/100
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canvas ' Uses mousedown and rmousedown for drawing/erasing
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' Keyboarding
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keyin=inkey$
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select case keyin
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case "+"
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state.brushsize=state.brushsize+1
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case "-"
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if state.brushsize>1 then state.brushsize=state.brushsize-1
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end select
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_dest 0
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canvas 'draw canvas first so it doesn't over
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toolbox
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colorpicker ' Uses rmouseclicked for bcolor
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colorpicker
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_limit 30
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_display
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@ -140,7 +155,7 @@ sub canvas
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' Workspace background
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line (boxX1, 0)-(_width - 1, boxHeight), _rgb32(32), bf
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' Render Layers with Zoom/Offset[cite: 4]
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' Render Layers (0 = background,1 = drawlayer, 2=reference 3 = Preview)
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dim i as integer
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for i = 0 to ubound(layers)
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dim w as integer: w = _width(layers(i).ihandle) * state.zoom
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@ -148,31 +163,73 @@ sub canvas
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_putimage (state.offsetX, state.offsetY)-(state.offsetX + w, state.offsetY + h), layers(i).ihandle
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next
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' --- Drawing Logic (Multi-Button) ---
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if (mousedown or rmousedown) and _mousex > boxX1 then
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' Translate to Canvas Space
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dim canX as integer: canX = (_mousex - state.offsetX) / state.zoom
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dim canY as integer: canY = (_mousey - state.offsetY) / state.zoom
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' Boundary Check
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if canX >= 0 and canX < _width(layers(0).ihandle) then
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if canY >= 0 and canY < _height(layers(0).ihandle) then
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_dest layers(0).ihandle
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' Select color based on button pressed
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dim drawCol as _unsigned long
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if mousedown then drawCol = state.fcolor else drawCol = state.bcolor
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' Apply Tool
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if state.tool = 1 then
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pset (canX, canY), drawCol
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elseif state.tool = 2 then
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' Example: Square brush
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line (canX - 1, canY - 1)-(canX + 1, canY + 1), drawCol, bf
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end if
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_dest 0
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' Translate Mouse to Canvas Space
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dim canX as integer: canX = (_mousex - state.offsetX) / state.zoom
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dim canY as integer: canY = (_mousey - state.offsetY) / state.zoom
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' Color Selection: Left Click = Foreground, Right Click = Background
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dim drawCol as _unsigned long
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if mousedown or mouseclicked then drawCol = state.fcolor else drawCol = state.bcolor
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' Interaction Boundary Check
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if _mousex > boxX1 then
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' On Initial Click: Set the anchor point for shapes
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if (mousedown or rmousedown) and state.isDrawing = 0 then
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state.startX = canX
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state.startY = canY
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state.isDrawing = -1
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end if
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if state.isDrawing then
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' preview layer handles the "rubber-banding" of shapes
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_dest layers(2).ihandle
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cls , 0
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select case state.tool
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case 1 ' Pencil (Direct to Canvas)
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_dest layers(1).ihandle
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thickline state.startX, state.startY, canX, canY, drawCol
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state.startX = canX: state.startY = canY
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case 2 ' Straight Line
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thickline state.startX, state.startY, canX, canY, drawCol
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case 3 ' Thick Circle (Outline)
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dim r as single: r = sqr((canX - state.startX)^2 + (canY - state.startY)^2)
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r=abs(r)+1
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thickcircle state.startX, state.startY, r, drawCol
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case 4 ' Filled Circle
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dim r_fill as single: r_fill = sqr((canX - state.startX)^2 + (canY - state.startY)^2)
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filledcircle state.startX, state.startY, r_fill, drawCol
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case 5 ' Rectangle Outline (using thickline)
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thickline state.startX, state.startY, canX, state.startY, drawCol
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thickline canX, state.startY, canX, canY, drawCol
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thickline canX, canY, state.startX, canY, drawCol
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thickline state.startX, canY, state.startX, state.startY, drawCol
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case 6 ' Filled Rectangle
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line (state.startX, state.startY)-(canX, canY), drawCol, bf
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case 7
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case 8 ' Polygon Outline (using thickline)
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' Simple preview of a line; complex polygons usually require
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' a point-collection state machine.
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thickline state.startX, state.startY, canX, canY, drawCol
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end select
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' Release Logic: Commit preview to permanent layer
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if _mousebutton(1) = 0 and _mousebutton(2) = 0 then
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_dest layers(1).ihandle
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_putimage , layers(2).ihandle
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_dest layers(2).ihandle
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cls , 0
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state.isDrawing = 0
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end if
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_dest 0
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end if
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end if
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end sub
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@ -208,6 +265,7 @@ end function
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'$include: 'include/ui.bm'
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'$include: 'include/imgout.bm'
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'$include: 'include/palette.bm'
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'$include: 'include/tools.bm'
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function adduiicon(imagehandle as long)
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dim unknown as long
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