org::scilab::modules::renderer::arcDrawing::ArcTools Class Reference

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Public Member Functions
void	setCoordinatesToCircleGL (GL gl)
double	getSweepAngle ()
Protected Member Functions
	ArcTools (Vector3D center, Vector3D semiMinorAxis, Vector3D semiMajorAxis, double startAngle, double endAngle)
abstract void	drawCircle (GL gl)
Static Protected Attributes
static final int	NB_SLICES = 64
Private Attributes
Vector3D	scale
Matrix4D	rotationMatrix
Vector3D	center
double	startAngle
double	angularRegion

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Detailed Description

ArcTools

Author:

Sylvestre Koumar

Definition at line 25 of file ArcTools.java.

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Constructor & Destructor Documentation

org::scilab::modules::renderer::arcDrawing::ArcTools::ArcTools	(	Vector3D	center,
		Vector3D	semiMinorAxis,
		Vector3D	semiMajorAxis,
		double	startAngle,
		double	endAngle
	)			[inline, protected]

Constructor

Parameters:

	center	Vector3D
	semiMinorAxis	Vector3D
	semiMajorAxis	Vector3D
	startAngle	double
	endAngle	double

Definition at line 51 of file ArcTools.java.

References org::scilab::modules::renderer::utils::geom3D::Vector3D::crossProduct(), org::scilab::modules::renderer::utils::geom3D::Vector3D::getNorm(), org::scilab::modules::renderer::utils::geom3D::Vector3D::getNormalized(), rotationMatrix, scale, and org::scilab::modules::renderer::utils::geom3D::Matrix4D::setFromRotatedBasis().

                                                                                                                                {
                this.center = center;
                Vector3D thirdVector = semiMinorAxis.crossProduct(semiMajorAxis).getNormalized();
                
                rotationMatrix = new Matrix4D();
                rotationMatrix.setFromRotatedBasis(semiMinorAxis, semiMajorAxis, thirdVector);
                
                // the arc is flat, Z coordinate does not matter.
                scale = new Vector3D(semiMinorAxis.getNorm(), semiMajorAxis.getNorm() , 1.0);
                
                this.startAngle = startAngle;
                this.angularRegion = endAngle - startAngle;
                
        }

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Member Function Documentation

void org::scilab::modules::renderer::arcDrawing::ArcTools::setCoordinatesToCircleGL

(

GL

gl

)

[inline]

Modify OpenGL frame so the ellipse which is the support of the arc become a circle

Parameters:

gl

current OpenGL pipeline

Definition at line 70 of file ArcTools.java.

References center, org::scilab::modules::renderer::utils::geom3D::Matrix4D::getOpenGLRepresentation(), org::scilab::modules::renderer::utils::geom3D::Vector3D::getX(), org::scilab::modules::renderer::utils::geom3D::Vector3D::getY(), org::scilab::modules::renderer::utils::geom3D::Vector3D::getZ(), rotationMatrix, scale, and startAngle.

Referenced by org::scilab::modules::renderer::arcDrawing::ArcLineTools::beginRendering(), and org::scilab::modules::renderer::arcDrawing::ArcFillTools::beginRendering().

                                                    {
                gl.glTranslated(center.getX(), center.getY(), center.getZ());
                gl.glMultMatrixd(rotationMatrix.getOpenGLRepresentation(), 0);
                gl.glScaled(scale.getX(), scale.getY(), scale.getZ());
                // Put the minimum angle has greatest axis, so the draw sart at Y = 0.
                gl.glRotated(Math.toDegrees(startAngle), 0.0, 0.0, 1.0);
        }

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abstract void org::scilab::modules::renderer::arcDrawing::ArcTools::drawCircle

(

GL

gl

)

[protected, pure virtual]

drawArc

Parameters:

gl

current GL pipeline

Implemented in org::scilab::modules::renderer::arcDrawing::FastArcFillTools, org::scilab::modules::renderer::arcDrawing::FastArcLineTools, org::scilab::modules::renderer::arcDrawing::NurbsArcFillTools, and org::scilab::modules::renderer::arcDrawing::NurbsArcLineTools.

Referenced by org::scilab::modules::renderer::arcDrawing::ArcLineDrawerGL::drawArc(), and org::scilab::modules::renderer::arcDrawing::ArcFillDrawerGL::drawArc().

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double org::scilab::modules::renderer::arcDrawing::ArcTools::getSweepAngle

(

)

[inline]

Returns:

angular region of the arc.

Definition at line 87 of file ArcTools.java.

References angularRegion.

Referenced by org::scilab::modules::renderer::arcDrawing::NurbsArcLineTools::drawCircle(), org::scilab::modules::renderer::arcDrawing::NurbsArcFillTools::drawCircle(), org::scilab::modules::renderer::arcDrawing::FastArcLineTools::drawCircle(), and org::scilab::modules::renderer::arcDrawing::FastArcFillTools::drawCircle().

                                      {
                return angularRegion;
        }

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Field Documentation

final int org::scilab::modules::renderer::arcDrawing::ArcTools::NB_SLICES = 64 [static, protected]

number of slice for the circle

Definition at line 28 of file ArcTools.java.

Referenced by org::scilab::modules::renderer::arcDrawing::FastArcLineTools::drawCircle(), and org::scilab::modules::renderer::arcDrawing::FastArcFillTools::drawCircle().

Vector3D org::scilab::modules::renderer::arcDrawing::ArcTools::scale [private]

scale to transform the ellipse into a circle

Definition at line 31 of file ArcTools.java.

Referenced by ArcTools(), and setCoordinatesToCircleGL().

Matrix4D org::scilab::modules::renderer::arcDrawing::ArcTools::rotationMatrix [private]

To put the ellipse in the right position

Definition at line 33 of file ArcTools.java.

Referenced by ArcTools(), and setCoordinatesToCircleGL().

Vector3D org::scilab::modules::renderer::arcDrawing::ArcTools::center [private]

center of the ellipse

Definition at line 35 of file ArcTools.java.

Referenced by setCoordinatesToCircleGL().

double org::scilab::modules::renderer::arcDrawing::ArcTools::startAngle [private]

starting angle

Definition at line 37 of file ArcTools.java.

Referenced by setCoordinatesToCircleGL().

double org::scilab::modules::renderer::arcDrawing::ArcTools::angularRegion [private]

size of the angular region of the arc

Definition at line 40 of file ArcTools.java.

Referenced by getSweepAngle().

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The documentation for this class was generated from the following file:

• /home/scilab/compilation_chain/sci_checkOut/scilab/modules/renderer/src/java/org/scilab/modules/renderer/arcDrawing/ArcTools.java