REVIEW CURVE.pdf

CURVE EDITING TOOLS (DERTR) DRAW - free-hand EXTRUDE - extrude the curve by adding new control points RADIUS - Controls the radius TILT - control the rotation RANDOMIZE - move selected control points CURVE DRAW TOOL - commonly used SPLINES - substructure of curves POL...

CURVE EDITING TOOLS (DERTR) DRAW - free-hand EXTRUDE - extrude the curve by adding new control points RADIUS - Controls the radius TILT - control the rotation RANDOMIZE - move selected control points CURVE DRAW TOOL - commonly used SPLINES - substructure of curves POLY SPLINES - most simple, don’t interpolate POLY CURVES- converting meshes to curves BEZIER- main elements are the control points and handles. Found between two control points. TYPE OF HANDLES - 4 curve handle types (AVAF) ygpb AUTOMATIC (yellow)- automatic length and direction VECTOR (green)- both parts of handle always point to the prev handle ALIGNED (purple)- always lie in a straight line FREE (black)- independent of each other BEZIER PRIMITIVES: BEZIER - add open 2D bezier curve 2 control points - approximations BEZIER - add closed 2D bezier curve 4 control points NURBS (Non-Uniform Rational B-Spline) - Mathematical form used in computer graphics - 3D generating and representing curves and surfaces PRIMITIVES; Cu4 Ci8 P5 NURBS Curve - add open 2D nurbs curve 4 control points w uniform knots NURBS Circle - nurbs curve 8 control points NURBS Path - add open 3D curve 5 aligned control points w endpoint knots BEZIER Curve - can be edited by transforming the locations of both control points and handles NURBS Curve - Have only control points Move, Rotate, Scale (MRS) curve control points can be MRS as described in Basic Transformations Sphere, Shear, Warp, Bend, Push/Pull, Warp, Randomize (SSWBP/PWR) Transform tools are described in the transformation sections Move/Scale Texture Space (M/STS) Curves have texture spaces which can be edited RADIUS TOOL radius allows direct control width of the extrusion along the spinal curve interpolated from point to point TOGGLE CYCLIC Toggles between an open curve and closed curve. Only curves with at least 1 selected control point will be closed/open. SET SPLINE TYPE Converts splines in a curve object between B,N,P. SHOW/HIDE Hide and reveal elements from display DECIMATE CURVE Reduces the number of control points CONTROL POINTS Help you Editing and managing the control points Includes extruding, creating segments, tilting, and smoothing curves SEGMENTS (S,SD) SUBDIVIDE Simple subdives all selected segments SWITCH DIRECTION Reverse the direction of any curve PROPERTIES Shape Panel Dimension - default 3D, can be set to 2D Resolution Preview/Render U Defines number of points that are computed between every pair of control points  Twist Method A 3d curve has control points that are not located on the curve’s local XY Plane. This gives the curve a twist which can affect the curve normals. Smooth Interactively removes twist from the curve. Fill mode Determines the way a curve is displayed when it’s beveled Fill Deformed Fills the curve after applying all modification that might deform the curve Radius Causes the deformed object to be scaled by the set curve radius Stretch Bounds Clamp Offset Moves the extrusion parallel to the curve normals Extrude Turns a one-dimensional curve into a two-dimensional curve by giving it height. Taper curve Evaluated along the local X-axis, using the local Y axis for width control Tapering a curve causes it to get thinner towards one end. Fill Caps Seals the ends of a beveled curve LESSON 4 CURVE Toggle Cyclic - This toggle between an open curve and closed curve (Cyclic). Only curves with Bézier Curve with straight line segments at least one selected control point will be SPLINE - Splines are a substructure of curves closed/open and are the individual elements that make curve Set Spline Type - converts splines in a curve objects. A curve object can be composed of object between Bézier, NURBS, and Poly curves. several different splines, just like mesh objects can have different discontinuous meshes under Decimate Curve - The Decimate Curve operator the same object. reduces the number of control points while trying to maintain the curves original shape. TYPES OF SPLINES Control Points - This will help you in editing and POLY SPLINE - are the simplest spline managing the control points. This include type as they do not interpolate the extruding, creating segments, tilting and shape of the curve between control smoothing curves. points. BEZIER - The main elements used in Segments editing Bézier curves are the control Subdivide - Curve subdivision simply points and handles. A segment (the subdivides all selected segments by actual curve) is found between two adding one or more control points control points. The handles define the between the selected segments. curvature of the segment. Switch Direction- This tool will “reverse” the direction of any curve with at least one selected element. NURBS - non-uniform rational B-spline is a mathematical form which is used in computer PROPERTIES OF SHAPE PANEL graphics for 3D generating and representing Resolution Preview/Render U - The resolution curves and surfaces. property defines the number of points that are NURBS Primitives computed between every pair of control points. NURBS Circle Twist Method - A 3D curve has control points NURBS Path that are not located on the curve’s local XY EDITING SPLINE AND CURVES plane. Transform Tool - A Bézier curve can be edited by Smooth - Interactively removes twists from the transforming the locations of both control curve. points and handles. NURBS curve on the other Fill Mode - determines the way a curve is hand have only control points. displayed when it is beveled Radius Tool - The Radius allows you to directly Fill Deformed - Fills the curve after applying all control the width of the extrusion along the modification that might deform the curve “spinal” curve. The Radius of the points is set using the Radius transform tool. Radius - Causes the deformed object to be scaled by the set curve radius. Stretch - The Stretch curve option allows you to let the mesh object stretch, or squeeze, over the entire curve. Bounds Clamp - the object and mesh offset along the deformation axis is ignored. This can be useful with the Stretch option or when using a negative axis. Offset - Moves the extrusion parallel to the curve normals. Extrude - Turns a one-dimensional curve into a two-dimensional curve by giving it height. With a scale. Taper Object - Tapering a curve causes it to get thinner towards one end. Editing the handles and control points of the Taper Object will cause the original Object to change shape.