Initial data commit

Task/Draw-a-cuboid/MiniScript/draw-a-cuboid.mini

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+import "mathUtil"
+scale = 20
+
+img = file.loadImage("/sys/pics/shapes/SquareThin.png")
+clear; gfx.clear color.gray
+
+// Rotate the given [x,y,z] point by some number of degrees
+// around the Y axis, then project to the screen.
+rotateAndProject = function(point3d, rotDegrees)
+	radians = rotDegrees * pi/180
+	cosAng = cos(radians); sinAng = sin(radians)
+	// First, rotate around the Y axis in 3D space
+	x = point3d[0] * cosAng - point3d[2] * sinAng
+	y = point3d[1]
+	z = point3d[0] * sinAng + point3d[2] * cosAng
+	// Then, project this to the screen
+	result = [480 + x * scale, 320 + y * scale]
+	p = (80 - z) / 80  // (perspective factor)
+	return mathUtil.lerp2d(result, [480,800], 1-p)
+end function
+
+addFace = function(points3d, tint)
+	sp = new Face
+	sp.image = img
+	corners = []
+	for p in points3d
+		corners.push rotateAndProject(p, -45)
+	end for
+	sp.setCorners corners
+	sp.tint = tint
+	display(4).sprites.push sp
+end function
+
+w = 3; h = 2; d = 4
+addFace [[-w,-h,-d],[w,-h,-d],[w,h,-d],[-w,h,-d]], color.lime
+addFace [[w,-h,-d],[w,-h,d],[w,h,d],[w,h,-d]], color.aqua
+addFace [[-w,h,-d],[w,h,-d],[w,h,d],[-w,h,d]], color.pink