[ Prev | Index | Next ]
Japanese English

Scaling 3D Objects

This section covers how to scale (enlarge or shrink) models and polygons.

Scaling a Model

To scale a model, use the scaleModel(...) function.

- Function Format -

void scaleModel (
  int modelID,
  float sx, float sy, float sz
)

Arguments:

  • modelID: Specifies the ID of the model to be scaled.
  • sx, sy, sz: Specify the scale factors for the X, Y, and Z directions respectively. A value greater than 1.0 enlarges the model, while a value less than 1.0 shrinks it. To keep the original size in a direction, use 1.0.

Scaling a Polygon

To scale a polygon, use the scalePolygon(...) function.

- Function Format -

void scalePolygon (
  int polygonID,
  float sx, float sy, float sz
)

Arguments:

  • polygonID: Specifies the ID of the polygon to be scaled.
  • sx, sy, sz: Specify the scale factors for the X, Y, and Z directions respectively. A value greater than 1.0 enlarges the polygon, while a value less than 1.0 shrinks it. To keep the original size in a direction, use 1.0.

Example Program

Let's place a sphere model and stretch it by a factor of 2 along the Z-axis. Write and run the following code:


import graphics3d.Graphics3DFramework;
import Graphics3D;

// Function called at the start of the program
void onStart ( int rendererID ) {

	// Optional: Set window size and background color
	setWindowSize( 800, 600 );
	setBackgroundColor( 0, 0, 0, 255 );


	// Create and place an axis model
	int axis = newAxisModel( 3.0, 3.0, 3.0 );
	mountModel( axis, rendererID );

	// Create and place a sphere model
	int sphere = newSphereModel( 1.0, 1.0, 1.0, 10, 7 );
	mountModel( sphere, rendererID );

	// Stretch the sphere 2x in the Z direction
	scaleModel( sphere, 1.0, 1.0, 2.0 );
}
Sample.vcssl

When you run this program, a white sphere will appear on a black background. The sphere is stretched 2x in the Z direction.

Execution Result
Execution Result
The sphere model appears scaled along the Z-axis.



Sponsored Link



Japanese English
Index
[ Prev | Index | Next ]
News From RINEARN
* VCSSL is developed by RINEARN.

English Documentation for Our Software and VCSSL Is Now Nearly Complete
2025-06-30 - We're happy to announce that the large-scale expansion of our English documentation with the support of AI — a project that began two years ago — has now reached its initial target milestone.

VCSSL 3.4.52 Released: Enhanced Integration with External Programs and More
2025-05-25 - This update introduces enhancements to the external program integration features (e.g., for running C-language executables). Several other improvements and fixes are also included. Details inside.

Released: Latest Version of VCSSL with Fixes for Behavioral Changes on Java 24
2025-04-22 - VCSSL 3.4.50 released with a fix for a subtle behavioral change in absolute path resolution on network drives, introduced in Java 24. Details inside.

Released the Latest Versions of RINEARN Graph and VCSSL - Now Supporting Customizable Tick Positions and Labels!
2024-11-24 - Starting with this update, a new "MANUAL" tick mode is now supported, allowing users to freely specify the positions and labels of ticks on the graph. We'll explain the details and how to use it.

Released Exevalator 2.2: Now Compatible with TypeScript and Usable in Web Browsers
2024-10-22 - The open-source expression evaluation library, Exevalator, has been updated to version 2.2. It now supports TypeScript and can be used for evaluating expressions directly in web browsers. Explains the details.

Behind the Scenes of Creating an Assistant AI (Part 1: Fundamental Knowledge)
2024-10-07 - The first part of a series on how to create an Assistant AI. In this article, we introduce the essential knowledge you need to grasp before building an Assistant AI. What exactly is an LLM-based AI? What is RAG? And more.

Launching an Assistant AI to Support Software Usage!
2024-09-20 - We've launched an Assistant AI that answers questions about how to use RINEARN software and helps with certain tasks. Anyone with a ChatGPT account can use it for free. We'll explain how to use it.

Software Updates: Command Expansion in RINEARN Graph, and English Support in VCSSL
2024-02-05 - We updated our apps. This updates include "Enhancing the Command-Line Features of RINEARN Graph" and "Adding English Support to VCSSL." Dives into each of them!