# Welcome to CrownCAD 2024 R4

CrownCAD 2024 R4, widely absorb the most authentic feedback from users, to maximize the realization of customer needs. In terms of ease of use, it is committed to improving customer experience; In terms of functionality, continuously adding commands that customers urgently need can help you quickly complete product design and development work.

Major enhancements：

Sketches	Add arc length annotations.
	Added virtual intersection function.
	Added quadrant points to capture circles/arcs.
	Added equality constraint in 3D sketch.
	New positioning sketch function, support for custom sketch origin and orientation.
	Offset supports symmetrical offset to both sides at the same time, offset circle supports adding offset distance size.
	New sketch library function, you can save the sketch as a whole in the library, subsequent repeated calls.
Parts and Features	Stretch supports more depth types, and stretch excision supports reverse lateral excision.
	Hole support Create slot holes, support more depth types, ease of use optimization.
	Transform supports multiple choice geometry, support transform grid.
	Datum surface support drag and drop fast creation.
	Datum new by point to create a specified face normal way.
	Added the function of parent-child relationship table to quickly view the feature association relationship.
	Import and export data from 3D curves through XYZ points supports common use with SOLIDWORKS data.
	Support for creating vortex lines.
Assembly	Fit new width fit, hinge fit.
	New view fit function to quickly view the fit of a specified instance.
	Replacement parts or assemblies can specify replacement instances and reattach fit relationships.
	Add the parent-child relationship command to quickly view the feature association relationship.
	New instance grouping function, classified management of component instances, coordination, etc.
Drawing	Section view thread effect optimization.
	Added the move out profile command, simple and intuitive representation of a small part of the large model pipe and similar areas.
	Model view supports viewing angles defined in 3D.
	Support to set the first view, the third view projection type.
	Added the Rotate view command to rotate the view on the plane.
	Decorate thread line annotation and display effect optimization.
	New automatic dimensioning function, automatically generate the size of the specified style.
	The size supports the maximum and minimum size of the circle/arc, optimizes the display effect of the size boundary line, and supports the adjustment of the end position of the size boundary line.
	New virtual intersection command, support to create, mark the virtual intersection between the lines.
	Annotations support record the last set of parameters.
	Hole marking can identify the number of holes with the same feature, and the depth of thread through is no longer marked according to GB requirements.
	Note can set the rotation Angle, support the association of custom attributes.
	Roughness default direction optimization, adding the option to quickly adjust the direction.
	Form and position tolerances support merging with dimensions, automatically adding extension lines beyond the marked range, and automatically capturing horizontal vertical angles.
	Automatic part serial number supports sorting and designating the first part.
	Annotations support drag and drop to toggle associated elements and generate multiple arrows as one-to-many annotations.
	Add arrowhead style for annotations.
	Area Fill/Section line supports custom fill model plane areas.
	Local view parent view label supports drag and drop to modify the position.
	The material list supports modification of part order and serial number.
	Support one click to display and hide the sketch projected in the parts.
	New layer function, batch management annotation and sketch style.
	Added the ability to show and hide annotations, so that annotations can be displayed and hidden individually.
	When deleting a model view, keep subviews of its projection view type.
Evaluation Tools
	Measurement support set parameters such as accuracy, can display XYZ dimensions, support measurement grid.
	New quick measurement function, the lower right corner of the viewport displays the basic parameters of the element.
	New thickness analysis command, which can identify thin and thick areas of parts, determine different thicknesses of parts, and assist designers in evaluating product structure.
	New zebra stripe command, used to identify and check the details in the surface, such as the continuity of the surface, whether there are defects, for surface quality assessment.
	New draw analysis command for visually evaluating whether the model has sufficient draw Angle and can be removed from the mold during production.
Sheet Metal

	Added molding tool command to save reused stamped entities.
	Matrix flanges support closed contours with holes.
	Flange multiple selection adjacent edges automatically add miter, tear shape release slot can be selected specific style.
	Miter flange corner molding effect optimization, support complex continuous side lines.
	Conversion to sheet metal support picks up rounded corners as bending surfaces to correctly convert existing sheet metal models.
	Stamping and forming features support mirror image and array.
Data conversion	Support for importing Creo engineering drawings.
	Optimized Cgr, rhino, 3dxml file import effect.
	Support for importing SOLIDWORKS custom properties.
	Support for importing space points.
	Add the datum surface implicit, grid import mode Settings.
Collaboration	New document sharing feature to share individual documents.
Collaboration	New template sharing function, which can share document templates and custom attribute templates.
System Settings	Document properties add trailing zeros, size boundaries, rounding decimals, and unit system options.
Apply	Support for setting the single increment value of the size increase or decrease button.
	Support to cancel the account, support to change the mobile phone number.
	Support double-click middle key adaptive.
Render	Add grid rendering.
Render	Added perspective camera to view models with perspective effects.
Library/Templates	Add bearings to standard parts library.
Universal	Comprehensive update of variable management, increase function expression, optimize interaction.
	Features support grouping.
	When copying documents, you can choose whether to copy the associated documents synchronously.
	Supports automatically judging and picking points on the line according to the picked position.
Animations	Supports editing the position of parts in existing keyframes.