factor/extra/processing/shapes/shapes.factor

87 lines
2.6 KiB
Factor

USING: alien.c-types alien.data arrays colors.constants grouping
kernel locals math math.vectors namespaces opengl opengl.demo-support
opengl.gl opengl.glu sequences sequences.generalizations shuffle ;
IN: processing.shapes
SYMBOL: fill-color
SYMBOL: stroke-color
COLOR: black stroke-color set-global
COLOR: white fill-color set-global
: fill-mode ( -- )
GL_FRONT_AND_BACK GL_FILL glPolygonMode
fill-color get gl-color ;
: stroke-mode ( -- )
GL_FRONT_AND_BACK GL_LINE glPolygonMode
stroke-color get gl-color ;
: gl-vertex-2d ( vertex -- ) first2 glVertex2d ;
: gl-vertices-2d ( vertices -- ) [ gl-vertex-2d ] each ;
: draw-point* ( x y -- ) stroke-mode GL_POINTS [ glVertex2d ] do-state ;
: draw-point ( point -- ) stroke-mode GL_POINTS [ gl-vertex-2d ] do-state ;
: draw-points ( points -- ) stroke-mode GL_POINTS [ gl-vertices-2d ] do-state ;
: draw-line** ( x y x y -- )
stroke-mode GL_LINES [ glVertex2d glVertex2d ] do-state ;
: draw-line* ( a b -- ) stroke-mode GL_LINES [ [ gl-vertex-2d ] bi@ ] do-state ;
: draw-lines ( seq -- ) stroke-mode GL_LINES [ gl-vertices-2d ] do-state ;
: draw-line ( seq -- ) draw-lines ;
: line-strip ( seq -- ) stroke-mode GL_LINE_STRIP [ gl-vertices-2d ] do-state ;
: draw-triangles ( seq -- )
[ fill-mode GL_TRIANGLES [ gl-vertices-2d ] do-state ]
[ stroke-mode GL_TRIANGLES [ gl-vertices-2d ] do-state ] bi ;
: draw-triangle ( seq -- ) draw-triangles ;
: draw-triangle* ( a b c -- ) 3array draw-triangles ;
: draw-triangle** ( x y x y x y -- ) 6 narray 2 group draw-triangles ;
: draw-polygon ( seq -- )
[ fill-mode GL_POLYGON [ gl-vertices-2d ] do-state ]
[ stroke-mode GL_POLYGON [ gl-vertices-2d ] do-state ] bi ;
:: draw-rectangle ( loc dim -- )
loc first2 :> ( x y )
dim first2 :> ( dx dy )
x y 2array
x dx + y 2array
x dx + y dy + 2array
x y dy + 2array
4array
draw-polygon ;
: draw-rectangle* ( x y width height -- ) [ 2array ] 2bi@ draw-rectangle ;
: gl-translate-2d ( pos -- ) first2 0 glTranslated ;
: gl-scale-2d ( xy -- ) first2 1 glScaled ;
: gl-ellipse ( center dim -- )
glPushMatrix
[ gl-translate-2d ] [ gl-scale-2d ] bi*
gluNewQuadric
dup 0 0.5 20 1 gluDisk
gluDeleteQuadric
glPopMatrix ;
: gl-get-line-width ( -- width )
GL_LINE_WIDTH 0 double <ref> tuck glGetDoublev double deref ;
: draw-ellipse ( center dim -- )
GL_FRONT_AND_BACK GL_FILL glPolygonMode
[ stroke-color get gl-color gl-ellipse ]
[ fill-color get gl-color gl-get-line-width 2 * dup 2array v- gl-ellipse ] 2bi ;
: draw-circle ( center size -- ) dup 2array draw-ellipse ;