dms::SimpleTransform

Source Code

• SimpleTransform.h
• SimpleTransform.cpp

Class Specification

#include <dms/SimpleTransform.h>

SimpleTransform(void);
virtual void apply(void);

void setTranslation(const Vector3& trans);
void setTranslation(GLfloat x,GLfloat y,GLfloat z);
void setRotation(GLfloat angle,const Vector3& axis);
void setRotation(GLfloat angle,GLfloat x,GLfloat y,GLfloat z);
void setScaling(GLfloat s);
void setScaling(const Vector3& s);
void setScaling(GLfloat x,GLfloat y,GLfloat z);

Vector3 translation(void);
GLfloat rotationAngle(void);
Vector3 rotationAxis(void);
Vector3 scaling(void);

Description

SimpleTransform(void)

The constructor initializes the SimpleTransform's translation and rotation to 0, and the scale to 1.

void apply(void)

Applies the SimpleTransform to the OpenGL transformation matrix. The transformation is applied as a translation, followed by a rotation, followed by a scale.

void setTranslation(const Vector3& trans)
void setTranslation(GLfloat x,GLfloat y,GLfloat z)
Vector3 translation(void)

Sets / returns the SimpleTransform's translation value. Multiple calls to setTranslation() do not accumulate - each call replaces the previous value.
Example:

xform.setTranslation(10.0, 0.0, 5.0);
xform.apply();

void setRotation(GLfloat angle,const Vector3& axis)
void setRotation(GLfloat angle,GLfloat x,GLfloat y,GLfloat z)
GLfloat rotationAngle(void)
Vector3 rotationAxis(void)

Sets / returns the SimpleTransform's rotation - an angle (in degrees) and an axis. Multiple calls to setRotation() do not accumulate - each call replaces the previous value.
Example:

xform.setRotation(30.0, Vector3::X_Axis);
xform2.setRotation(17.5, 1.0, 1.0, 2.0);

void setScaling(GLfloat s)
void setScaling(const Vector3& s)
void setScaling(GLfloat x,GLfloat y,GLfloat z)
Vector3 scaling(void);

Sets / returns the SimpleTransform's scaling factors. Calling setScaling() with a single argument will perform a uniform scale - the same scale factor will be used for X, Y, and Z.
Example:

xform.setScaling(3);
xform2.setScaling(0.707, 2.0, 0.707);