/* ===========================================================
* Orson Charts : a 3D chart library for the Java(tm) platform
* ===========================================================
*
* (C)opyright 2013-2016, by Object Refinery Limited. All rights reserved.
*
* http://www.object-refinery.com/orsoncharts/index.html
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* If you do not wish to be bound by the terms of the GPL, an alternative
* commercial license can be purchased. For details, please see visit the
* Orson Charts home page:
*
* http://www.object-refinery.com/orsoncharts/index.html
*
*/
package com.orsoncharts.graphics3d;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import com.orsoncharts.Chart3D;
import com.orsoncharts.graphics3d.swing.Panel3D;
/**
* A three dimensional scene that can be viewed from an arbitrary viewpoint
* and rendered to any {@link Graphics2D} instance. The {@link Chart3D} class
* implements this interface.
*
* @see Panel3D
*/
public interface Drawable3D {
/**
* Returns the aggregate dimensions of the objects in the 3D scene. This
* will be a bounding box for all the objects. One use for this
* information is to determine a suitable default viewing distance for
* a given scene (one that sizes the 2D projection to something appropriate
* for the available drawing space).
*
* @return The dimensions (never {@code null}).
*/
Dimension3D getDimensions();
/**
* Returns the point from which the 3D scene is viewed. The viewing point
* determines how the 3D scene is projected onto the 2D viewing plane in
* the {@link #draw(java.awt.Graphics2D, java.awt.geom.Rectangle2D)} method.
*
* @return The view point (never {@code null}).
*/
ViewPoint3D getViewPoint();
/**
* Sets a new view point. Note that the {@code ViewPoint3D} class is
* implemented so that its position and orientation can be updated directly,
* so you should use this method only when you want to set an entirely
* new view point.
*
* @param viewPoint the view point ({@code null} not permitted).
*/
void setViewPoint(ViewPoint3D viewPoint);
/**
* Returns the projection distance. A typical value is {@code 1500},
* higher numbers flatten out the perspective and reduce distortion in the
* projected image.
*
* @return The projection distance.
*
* @since 1.2
*/
double getProjDistance();
/**
* Sets the projection distance. A typical value is {@code 1500} (but this
* will depend on the dimensions of the scene), higher numbers flatten out
* the perspective and reduce distortion in the projected image.
*
* @param dist the distance.
*
* @since 1.2
*/
void setProjDistance(double dist);
/**
* Returns the 2D offset for the scene. Normally this will default
* to {@code (0, 0)}.
*
* @return The translation offset (never {@code null}).
*/
Offset2D getTranslate2D();
/**
* Sets the translation offset. This is typically used to allow the user
* to modify the offset of a 2D projection on-screen by dragging with the
* mouse.
*
* @param offset the translation offset ({@code null} not permitted).
*/
void setTranslate2D(Offset2D offset);
/**
* Draws the scene to the supplied {@code Graphics2D} target and returns
* an object containing state information about the rendering.
*
* @param g2 the graphics target ({@code null} not permitted).
* @param bounds the bounds ({@code null} not permitted).
*
* @return State information about the 3D scene that has been drawn
* (never {@code null}).
*/
RenderingInfo draw(Graphics2D g2, Rectangle2D bounds);
}