X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Feu%2Fsvjatoslav%2Fsixth%2Fe3d%2Fgui%2FRenderingContext.java;h=a5f7fb70018ae2c6d6a4162a6b13fd62cd74bbd4;hb=a3ff3683bd0a025061667b26b6fcf56fe20f0afc;hp=a09e79c68624f033462387ad85c6f394a039339b;hpb=6b39de1e9e80433b78ae731845551e742718d613;p=sixth-3d.git
diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/gui/RenderingContext.java b/src/main/java/eu/svjatoslav/sixth/e3d/gui/RenderingContext.java
index a09e79c..a5f7fb7 100644
--- a/src/main/java/eu/svjatoslav/sixth/e3d/gui/RenderingContext.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/gui/RenderingContext.java
@@ -1,14 +1,10 @@
/*
- * Sixth 3D engine. Copyright ©2012-2020, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 3 of the GNU Lesser General Public License
- * or later as published by the Free Software Foundation.
- *
+ * Sixth 3D engine. Author: Svjatoslav Agejenko.
+ * This project is released under Creative Commons Zero (CC0) license.
*/
-
package eu.svjatoslav.sixth.e3d.gui;
+import eu.svjatoslav.sixth.e3d.geometry.Point2D;
import eu.svjatoslav.sixth.e3d.gui.humaninput.MouseEvent;
import eu.svjatoslav.sixth.e3d.gui.humaninput.MouseInteractionController;
@@ -24,56 +20,45 @@ public class RenderingContext {
public final byte[] pixels;
public final int width;
public final int height;
- public final int xCenter;
- public final int yCenter;
+ /**
+ * Center of the screen in screen space (pixels).
+ * This is the point where (0,0) coordinate of the world space is rendered.
+ */
+ public final Point2D centerCoordinate;
+
+ /**
+ * Zoom factor. The bigger the value, the more zoomed in the view is.
+ */
public final double zoom;
final BufferedImage bufferedImage;
+ /**
+ * Number of frame that is currently being rendered.
+ * Every frame has its own number.
+ */
public int frameNumber = 0;
/**
* UI component that mouse is currently hovering over.
*/
- private MouseInteractionController currentMouseOverComponent;
-
- public void prepareForNewFrameRendering(){
- mouseEvent = null;
- objectUnderMouse = null;
- }
-
+ private MouseInteractionController objectPreviouslyUnderMouseCursor;
/**
* Mouse click event that needs to be processed.
+ * This event is processed only once per frame.
+ * If there are multiple objects under mouse cursor, the top-most object will receive the event.
+ * If there are no objects under mouse cursor, the event will be ignored.
+ * If there is no event, this field will be null.
+ * This field is set to null after the event is processed.
*/
- private MouseEvent mouseEvent;
-
- public void setMouseEvent(MouseEvent mouseEvent) {
- this.mouseEvent = mouseEvent;
- }
-
- public MouseEvent getMouseEvent() {
- return mouseEvent;
- }
-
+ private MouseEvent mouseEvent;
/**
- * Item that user clicked on.
- */
- private MouseInteractionController objectUnderMouse;
-
- /**
- * Called when given object was detected under mouse cursor, while processing {@link #mouseEvent}.
- * Because objects are rendered back to front. The last method caller will set the top-most object, if
- * there are multiple objects under mouse cursor.
+ * UI component that mouse is currently hovering over.
*/
- public void setObjectUnderMouse(MouseInteractionController objectUnderMouse) {
- this.objectUnderMouse = objectUnderMouse;
- }
+ private MouseInteractionController currentObjectUnderMouseCursor;
public RenderingContext(final int width, final int height) {
this.width = width;
this.height = height;
-
- this.xCenter = width / 2;
- this.yCenter = height / 2;
-
+ this.centerCoordinate = new Point2D(width / 2d, height / 2d);
this.zoom = width / 3d;
bufferedImage = new BufferedImage(width, height, bufferedImageType);
@@ -87,31 +72,49 @@ public class RenderingContext {
graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
}
+ public void prepareForNewFrameRendering() {
+ mouseEvent = null;
+ currentObjectUnderMouseCursor = null;
+ }
+
+ public MouseEvent getMouseEvent() {
+ return mouseEvent;
+ }
+
+ public void setMouseEvent(MouseEvent mouseEvent) {
+ this.mouseEvent = mouseEvent;
+ }
+
/**
- * @return true
if view repaint is needed.
+ * Called when given object was detected under mouse cursor, while processing {@link #mouseEvent}.
+ * Because objects are rendered back to front. The last method caller will set the top-most object, if
+ * there are multiple objects under mouse cursor.
*/
- public boolean handleDetectedComponentMouseEvents() {
- if (objectUnderMouse != null) {
- if (mouseEvent.button == 0) {
- // mouse over
- if (currentMouseOverComponent == null) {
- currentMouseOverComponent = objectUnderMouse;
- return currentMouseOverComponent.mouseEntered();
- } else if (currentMouseOverComponent != objectUnderMouse) {
- boolean viewRepaintNeeded = currentMouseOverComponent.mouseExited();
- currentMouseOverComponent = objectUnderMouse;
- return viewRepaintNeeded | currentMouseOverComponent.mouseEntered();
- }
- } else {
- // mouse click
- return objectUnderMouse.mouseClicked();
- }
- } else if (currentMouseOverComponent != null) {
- boolean viewRepaintNeeded = currentMouseOverComponent.mouseExited();
- currentMouseOverComponent = null;
- return viewRepaintNeeded;
+ public void setCurrentObjectUnderMouseCursor(MouseInteractionController currentObjectUnderMouseCursor) {
+ this.currentObjectUnderMouseCursor = currentObjectUnderMouseCursor;
+ }
+
+ /**
+ * @return true
if view update is needed as a consequence of this mouse event.
+ */
+ public boolean handlePossibleComponentMouseEvent() {
+ if (mouseEvent == null) return false;
+
+ boolean viewRepaintNeeded = false;
+
+ if (objectPreviouslyUnderMouseCursor != currentObjectUnderMouseCursor) {
+ // Mouse cursor has just entered or left component.
+ viewRepaintNeeded = objectPreviouslyUnderMouseCursor != null && objectPreviouslyUnderMouseCursor.mouseExited();
+ viewRepaintNeeded |= currentObjectUnderMouseCursor != null && currentObjectUnderMouseCursor.mouseEntered();
+ objectPreviouslyUnderMouseCursor = currentObjectUnderMouseCursor;
}
- return false;
+
+ if (mouseEvent.button != 0 && currentObjectUnderMouseCursor != null) {
+ // Mouse button was clicked on some component.
+ viewRepaintNeeded |= currentObjectUnderMouseCursor.mouseClicked(mouseEvent.button);
+ }
+
+ return viewRepaintNeeded;
}
}