GeoGebra3D Blog

Development blog of GeoGebra3D, latest items on top.

4.9.21.0

• matrix * 3D point
• When mouse is clicked on xOy plane, create free point.
• Toggle button for xOy plane in 3D view style bar.
• fixing wrong cast bug due to GeoPoint2.addIncidence()
• intersection tool for line/line, line/conic, conic/conic should work regardless it's 2D/3D objects/view
• choose object behind (bug : title location)
• selected object is always first 3D hit (so it's possible to right-click it)
• euclidian view for plane : use drawing matrix (so view is the same that "view in front of")

4.9.20.0

• Surfaces rendering
  • improved
  • always clipped by the box
  • level of detail

• 3D curves/surface syntax :
  • Curve[ <Expression>, <Expression>, <Expression>, <Parameter Variable>, <Start Value>, <End Value> ]
  • Function[ <Expression>, <Parameter Variable 1>, <Start Value>, <End Value>, <Parameter Variable 2>, <Start Value>, <End Value> ]
  • Surface[ <Expression>, <Expression>, <Expression>, <Parameter Variable 1>, <Start Value>, <End Value>, <Parameter Variable 2>, <Start Value>, <End Value> ]

• axis/grid
  • not displayed outside the box

• pyramid
  • Pyramid[ <point>, <point>, ..., <point> ] ("Pyramid" tool : create basis + create/select top point)
  • Pyramid[ <polygon>, <top point> ] ("Pyramid" tool : select basis + create/select top point)
  • Pyramid[ <polygon>, <height> ] ("Extrude to Pyramid/Cone" tool : Drag polygon, or select polygon and enter altitude to create centered pyramid)

• prism :
  • Prism[ <point>, <point>, ..., <point> ] ("Prism" tool : create basis + create/select first top point)
  • Prism[ <polygon>, <top point> ] ("Prism" tool : select basis + create/select first top point)
  • Prism[ <polygon>, <height> ] ("Extrude to Prism/Cylinder" tool : Drag polygon, or select polygon and enter altitude to create right prism)

• cone
  • Cone[ <Circle>, <height> ] (right circular cone, "Extrude to Pyramid/Cone" tool : Drag circle, or select circle and enter altitude to create right circular cone)

• cylinder
  • Cylinder[ <Cylinder>, <height> ] (right circular cylinder, "Extrude to Prism/Cylinder" tool : Drag circle, or select circle and enter altitude to create right cylinder)

• right prism tool is renamed to "Extrude to Prism/Cylinder" tool

4.9.18.0

• Fixing texts (partly)
• Fixing path intersection tool

4.9.17.0

• Clipping box :
  • correct extension border
  • points can't move outside (comprising the size)
  • always used for axes/planes
  • Outline for xOy plane (+ fixing "moving dash" of the grid)
  • 3 possible sizes (not savable for now)

• EuclidianStyleBar3D back in EuclidianView3D

• Moving 3D drawing pad along xOy / along Oz :
  • like for points
  • display moving cursor (with little cube)
  • don't highlight geo when in translate view mode (also in 2D ?)

4.9.16.0

• Clipping box :
  • rotation of the scene about its center
  • translation of the scene parallel to xOy plane
  • scale of the scene about picked point (or center of the scene if picked point is outside)
  • possibility to switch it off (options > graphics view 3D > basic, at bottom)

4.9.13.0

• Fixing EuclidianViewInterface related bugs
• Fixing 3D evaluator bad overriding

4.9.10.0

• Correct order for output in polyhedrons commands
• Prism[...] works with regular polygon as input

4.9.9.0

• Intersect[plane,plane] leads to IntersectPath[plane,plane]

4.9.8.0

• translate 3D objects
• 3D segments are number values

4.9.7.0

• isEqual() for GeoVector3D
• Length[<GeoVector3D>]
• Angle with 3D points
• Cube[point,point,direction] command (also Tetrahedron, Octahedron, Dodecahedron, Icosahedron)
• axis-fixed light
• tries about polygon offset

4.9.5.0

• fix picking buffer overflow when creating a polygon
• fix bad default 3D view

4.9.4.0

• fix add/remove geo for picking buffer
• texts in 3d
• fix point inside 3D polygon
• fix 3D segments with zero length were undefined

4.9.2.0

• optimize update of colors for 3D view

4.9.1.0

• anaglyph : possible automatic grayscale, possible turn off green chanel
• 3D view can change background color

4.9.0.0

• properties for 3D view (todo: implement all properties)
• projection tab in 3D properties
• modify 3D style bar (default view, projection popup)
• optimize projections (TODO : understand fill offset)
• add cav projection
• correct 3D mouse pointer (for perspective, cav)

3.9.288

3.9.286

• Surfaces
  • Function[u*v,u,-1,1,v,-1,1]
  • Surface[cos(u) (4 + cos(v)), sin(u) (4+ cos(v)), sin(v), u, 0, 2*pi, v, 0, 2*pi]

• Perspective projection (very beta)

• Anaglyph projection

3.9.268

• 2D view from...:
  • Moving points
  • New point tool
  • Line, segment, ray, vector tools
  • Circle two points, circle point-radius tools
  • fits the 3D view when created by a plane
  • specific toolbar
  • perpendicular line tool
  • points/objects defining the view are not moveable

• Planes use region parameters
• GeoPoint3D::setUndefined() doesn't erase region parameters
• Plane[<Polygon>], Plane[<Conic>] creates a plane containing the polygon, conic.

3.9.253

• Intersect[<Line>, <Conic>] in 3D
  • 2D line doesn't work
• Intersect[<Conic>, <Conic>] in 3D

3.9.246

• Midpoint for 3D segment
• Fixing labelling of prism/pyramid
• Drawing plane when view direction parallel to it
• Fixing selection of point when created
• Fixing showing 3D cursor
• Fixing 3D cursor
• Fixing moving point on plane when view direction parallel to plane

3.9.243

• Zoom in 3D centered on mouse pointer
• Circle[<Point>,<Radius>,<Line>] create circle with center, radius, and axis parallel to line
• Circle[<Point>,<Radius>,<Vector>] create circle with center, radius, and axis parallel to vector
• Circle[<Point>,<Radius>,<Plane>] create circle with center, radius, and parallel to plane
• Fixing wrong display of 3D vectors in 2D view.
• Fixing midpoint 3D : only if one of the points is 3D
• 3D polygon : coord sys centered on first point
• Button tool for circle point, radius, direction
• Circle[<Point>,<Point>,<Direction>] creates a circle with center, through a point, and axis parallel to direction (may be undefined)
• Fixing 3D polygon undefined
• Fixing sphere point-radius
• Button tool images for circle axis-point and circle point-radius-direction

3.9.240

• Add button tools for parallel line, perpendicular line
• Add command for plane perpendicular to a vector
• Display 3D vector in 2D view
• Right-click doesn't change the direction for moving a 3D point
• Button tool "circle 3 points" in 3D
• Midpoint of 3D points (command and button tool)
• View in front of works with algebra view. Change acceleration of the rotation animation.

3.9.237