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/*
* Modification History
*
* 2004-June-11 Jason Rohrer
* Created.
*
* 2004-June-16 Jason Rohrer
* Added fuctions for modifying object position, rotation, and transparency.
*
* 2004-June-18 Jason Rohrer
* Changed to use triangles instead of polygons.
*
* 2004-June-20 Jason Rohrer
* Added fuction for modifying scale.
* Added function for testing circle containment.
*
* 2004-June-21 Jason Rohrer
* Added fuction for getting minimum border distance.
*/
#ifndef DRAWABLE_OBJECT_INCLUDED
#define DRAWABLE_OBJECT_INCLUDED
#include "minorGems/math/geometry/Vector3D.h"
#include "minorGems/math/geometry/Angle3D.h"
#include "minorGems/graphics/Color.h"
/**
* A 2d object that can draw itself into the current OpenGL context.
*
* @author Jason Rohrer.
*/
class DrawableObject {
public:
/**
* Constructs an object.
*
* @param inNumTriangleVertices the number of triangle vertices.
* Must be a multiple of 3.
* @param inTriangleVertices the triangle vertices.
* Only the x and y components have an effect. This array and
* the vertices it contains will be destroyed when this class is
* destroyed.
* @param inTriangleVertexFillColors a fill color for each triangle
* vertex.
* This array and the colors it contains will be destroyed when
* this class is destroyed.
* @param inNumBorderVertices the number of border vertices.
* @param inBorderVertices the borer vertices.
* Only the x and y components have an effect. This array and
* the vertices it contains will be destroyed when this class is
* destroyed.
* @param inVertextBorderColors a border color for each vertex.
* This array and the colors it contains will be destroyed when
* this class is destroyed.
* @param inBorderWidth the width of the border, in pixels.
*/
DrawableObject( int inNumTriangleVertices,
Vector3D **inTriangleVertices,
Color **inTriangleVertexFillColors,
int inNumBorderVertices,
Vector3D **inBorderVertices,
Color **inBorderVertextColors,
float inBorderWidth );
virtual ~DrawableObject();
/**
* Rotates this object.
*
* @param inRotation the angle to rotate it by.
* Must be destroyed by caller.
*/
void rotate( Angle3D *inRotation );
/**
* Moves this object.
*
* @param inPosition the vector to move it by.
* Must be destroyed by caller.
*/
void move( Vector3D *inPosition );
/**
* Scales this object.
*
* @param inScale the multiplier to scale it by.
*/
void scale( double inScale );
/**
* Fades the colors of this object (makes them more transparent).
*
* @param inAlphaScale the value, in the range [0,1] to multiply
* alpha values by.
*/
void fade( double inAlphaScale );
/**
* Tests whether any of this object's border vertices are in a circle.
*
* @param inCenter the center of the circle.
* Must be destroyed by caller.
* @param inRadius the radius of the circle.
*/
char isBorderInCircle( Vector3D *inCenter, double inRadius );
/**
* Gets the maximum distance of the border vertices from a given
* point.
*
* @param inPoint the point to get the distance from.
* Must be destroyed by caller.
*/
double getBorderMaxDistance( Vector3D *inPoint );
/**
* Gets the minimum distance of the border vertices from a given
* point.
*
* @param inPoint the point to get the distance from.
* Must be destroyed by caller.
*/
double getBorderMinDistance( Vector3D *inPoint );
/**
* Draws this object into the current OpenGL context.
*
* @param inScale the scale factor.
* @param inRotation the rotation of the object.
* Must be destroyed by caller.
* @param inPosition the position of the object.
* Must be destroyed by caller.
*/
void draw( double inScale, Angle3D *inRotation, Vector3D *inPosition );
protected:
int mNumTriangleVertices;
Vector3D **mTriangleVertices;
Color **mTriangleVertexFillColors;
int mNumBorderVertices;
Vector3D **mBorderVertices;
Color **mBorderVertexColors;
float mBorderWidth;
};
#endif
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