protected void endDrawIcons(DrawContext dc) {
if (dc.isPickingMode()) this.pickSupport.endPicking(dc);
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
if (dc.isPickingMode()) {
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE, OGLUtil.DEFAULT_TEX_ENV_MODE);
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_SRC0_RGB, OGLUtil.DEFAULT_SRC0_RGB);
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_COMBINE_RGB, OGLUtil.DEFAULT_COMBINE_RGB);
}
gl.glBindTexture(GL.GL_TEXTURE_2D, 0);
this.oglStackHandler.pop(gl);
}
/**
* Establish the OpenGL state needed to draw text.
*
* @param dc the current draw context.
*/
protected void beginDrawing(DrawContext dc) {
GL gl = dc.getGL();
int attrMask =
GL.GL_DEPTH_BUFFER_BIT // for depth test, depth mask and depth func
| GL.GL_TRANSFORM_BIT // for modelview and perspective
| GL.GL_VIEWPORT_BIT // for depth range
| GL.GL_CURRENT_BIT // for current color
| GL.GL_COLOR_BUFFER_BIT // for alpha test func and ref, and blend
| GL.GL_DEPTH_BUFFER_BIT // for depth func
| GL.GL_ENABLE_BIT; // for enable/disable changes
this.BEogsh.pushAttrib(gl, attrMask);
if (!dc.isPickingMode()) {
gl.glEnable(GL.GL_BLEND);
OGLUtil.applyBlending(gl, false);
}
// Do not depth buffer the label. (Labels beyond the horizon are culled above.)
gl.glDisable(GL.GL_DEPTH_TEST);
gl.glDepthMask(false);
// The image is drawn using a parallel projection.
this.BEogsh.pushProjectionIdentity(gl);
gl.glOrtho(
0d, dc.getView().getViewport().width, 0d, dc.getView().getViewport().height, -1d, 1d);
this.BEogsh.pushModelviewIdentity(gl);
}
/**
* Draws text for subsequent Label ordered renderables in the ordered renderable list. This method
* is called after the text renderer has been set up (after beginRendering has been called), so
* this method can only draw text for subsequent labels that use the same font and rotation as
* this label. This method differs from {@link #drawBatched(gov.nasa.worldwind.render.DrawContext)
* drawBatched} in that this method reuses the active text renderer context to draw as many labels
* as possible without switching text renderer state.
*
* @param dc the current draw context.
* @param textRenderer Text renderer used to draw the label.
*/
protected void drawBatchedText(DrawContext dc, TextRenderer textRenderer) {
// Draw as many as we can in a batch to save ogl state switching.
Object nextItem = dc.peekOrderedRenderables();
if (!dc.isPickingMode()) {
while (nextItem != null && nextItem instanceof TacticalGraphicLabel) {
TacticalGraphicLabel nextLabel = (TacticalGraphicLabel) nextItem;
if (!nextLabel.isEnableBatchRendering()) break;
boolean sameFont = this.font.equals(nextLabel.getFont());
boolean sameRotation =
(this.rotation == null && nextLabel.rotation == null)
|| (this.rotation != null && this.rotation.equals(nextLabel.rotation));
boolean drawInterior = nextLabel.isDrawInterior();
// We've already set up the text renderer state, so we can can't change the font or text
// rotation.
// Also can't batch render if the next label needs an interior since that will require
// tearing down the
// text renderer context.
if (!sameFont || !sameRotation || drawInterior) break;
dc.pollOrderedRenderables(); // take it off the queue
nextLabel.doDrawText(textRenderer);
nextItem = dc.peekOrderedRenderables();
}
}
}
/**
* Draws this ordered renderable and all subsequent Label ordered renderables in the ordered
* renderable list. This method differs from {@link
* #drawBatchedText(gov.nasa.worldwind.render.DrawContext, TextRenderer) drawBatchedText} in that
* this method re-initializes the text renderer to draw the next label, while {@code
* drawBatchedText} re-uses the active text renderer context. That is, {@code drawBatchedText}
* attempts to draw as many labels as possible that share same text renderer configuration as this
* label, and this method attempts to draw as many labels as possible regardless of the text
* renderer configuration of the subsequent labels.
*
* @param dc the current draw context.
*/
protected void drawBatched(DrawContext dc) {
// Draw as many as we can in a batch to save ogl state switching.
Object nextItem = dc.peekOrderedRenderables();
if (!dc.isPickingMode()) {
while (nextItem != null && nextItem instanceof TacticalGraphicLabel) {
TacticalGraphicLabel nextLabel = (TacticalGraphicLabel) nextItem;
if (!nextLabel.isEnableBatchRendering()) break;
dc.pollOrderedRenderables(); // take it off the queue
nextLabel.doDrawOrderedRenderable(dc, this.pickSupport);
nextItem = dc.peekOrderedRenderables();
}
} else if (this.isEnableBatchPicking()) {
while (nextItem != null && nextItem instanceof TacticalGraphicLabel) {
TacticalGraphicLabel nextLabel = (TacticalGraphicLabel) nextItem;
if (!nextLabel.isEnableBatchRendering() || !nextLabel.isEnableBatchPicking()) break;
if (nextLabel.pickLayer != this.pickLayer) // batch pick only within a single layer
break;
dc.pollOrderedRenderables(); // take it off the queue
nextLabel.doDrawOrderedRenderable(dc, this.pickSupport);
nextItem = dc.peekOrderedRenderables();
}
}
}
protected void applyColor(DrawContext dc, java.awt.Color color, double opacity) {
if (dc.isPickingMode()) return;
double finalOpacity = opacity * (color.getAlpha() / 255.0);
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
OGLUtil.applyColor(gl, color, finalOpacity, true);
}
/**
* Draw this label during ordered rendering.
*
* @param dc Current draw context.
* @param pickSupport Support object used during picking.
*/
protected void doDrawOrderedRenderable(DrawContext dc, PickSupport pickSupport) {
TextRenderer textRenderer =
OGLTextRenderer.getOrCreateTextRenderer(dc.getTextRendererCache(), font);
if (dc.isPickingMode()) {
this.doPick(dc, pickSupport);
} else {
this.drawText(dc, textRenderer);
}
}
/**
* Draws the graphic as an ordered renderable.
*
* @param dc the current draw context.
*/
protected void makeOrderedRenderable(DrawContext dc) {
if (this.lines == null || this.position == null) return;
this.computeGeometryIfNeeded(dc);
// Don't draw if beyond the horizon.
double horizon = dc.getView().getHorizonDistance();
if (this.eyeDistance > horizon) return;
if (this.intersectsFrustum(dc)) dc.addOrderedRenderable(this);
if (dc.isPickingMode()) this.pickLayer = dc.getCurrentLayer();
}
/**
* Determine if this label intersects the view or pick frustum.
*
* @param dc Current draw context.
* @return True if this label intersects the active frustum (view or pick). Otherwise false.
*/
protected boolean intersectsFrustum(DrawContext dc) {
View view = dc.getView();
Frustum frustum = view.getFrustumInModelCoordinates();
// Test the label's model coordinate point against the near and far clipping planes.
if (this.placePoint != null
&& (frustum.getNear().distanceTo(this.placePoint) < 0
|| frustum.getFar().distanceTo(this.placePoint) < 0)) {
return false;
}
if (dc.isPickingMode()) return dc.getPickFrustums().intersectsAny(this.screenExtent);
else return view.getViewport().intersects(this.screenExtent);
}
protected void beginDrawIcons(DrawContext dc) {
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
this.oglStackHandler.clear();
int attributeMask =
GL2.GL_DEPTH_BUFFER_BIT // for depth test, depth mask and depth func
| GL2.GL_TRANSFORM_BIT // for modelview and perspective
| GL2.GL_VIEWPORT_BIT // for depth range
| GL2.GL_CURRENT_BIT // for current color
| GL2.GL_COLOR_BUFFER_BIT // for alpha test func and ref, and blend
| GL2.GL_DEPTH_BUFFER_BIT // for depth func
| GL2.GL_ENABLE_BIT; // for enable/disable changes
this.oglStackHandler.pushAttrib(gl, attributeMask);
// Apply the depth buffer but don't change it.
if ((!dc.isDeepPickingEnabled())) gl.glEnable(GL.GL_DEPTH_TEST);
gl.glDepthMask(false);
// Suppress any fully transparent image pixels
gl.glEnable(GL2.GL_ALPHA_TEST);
gl.glAlphaFunc(GL2.GL_GREATER, 0.001f);
// Load a parallel projection with dimensions (viewportWidth, viewportHeight)
this.oglStackHandler.pushProjectionIdentity(gl);
gl.glOrtho(
0d, dc.getView().getViewport().width, 0d, dc.getView().getViewport().height, -1d, 1d);
this.oglStackHandler.pushModelview(gl);
this.oglStackHandler.pushTexture(gl);
if (dc.isPickingMode()) {
this.pickSupport.beginPicking(dc);
// Set up to replace the non-transparent texture colors with the single pick color.
gl.glEnable(GL.GL_TEXTURE_2D);
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE, GL2.GL_COMBINE);
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_SRC0_RGB, GL2.GL_PREVIOUS);
gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_COMBINE_RGB, GL2.GL_REPLACE);
} else {
gl.glEnable(GL.GL_TEXTURE_2D);
gl.glEnable(GL.GL_BLEND);
gl.glBlendFunc(GL.GL_ONE, GL.GL_ONE_MINUS_SRC_ALPHA);
}
}
/**
* Render the label interior as a filled rectangle.
*
* @param dc Current draw context.
*/
protected void drawInterior(DrawContext dc) {
GL gl = dc.getGL();
double width = this.bounds.getWidth();
double height = this.bounds.getHeight();
int x = this.screenPoint.x;
int y = this.screenPoint.y;
// Adjust x to account for text alignment
int xAligned = x;
if (AVKey.CENTER.equals(textAlign)) xAligned = x - (int) (width / 2);
else if (AVKey.RIGHT.equals(textAlign)) xAligned = x - (int) width;
// We draw text top-down, so adjust y to compensate.
int yAligned = (int) (y - height);
// Apply insets
Insets insets = this.getInsets();
xAligned -= insets.left;
width = width + insets.left + insets.right;
yAligned -= insets.bottom;
height = height + insets.bottom + insets.top;
if (!dc.isPickingMode()) {
// Apply the frame background color and opacity if we're in normal rendering mode.
Color color = this.computeBackgroundColor(this.getMaterial().getDiffuse());
gl.glColor4ub(
(byte) color.getRed(),
(byte) color.getGreen(),
(byte) color.getBlue(),
(byte) (this.interiorOpacity < 1 ? (int) (this.interiorOpacity * 255 + 0.5) : 255));
}
try {
// Draw a quad
gl.glPushMatrix();
gl.glTranslated(xAligned, yAligned, 0);
gl.glScaled(width, height, 1.0);
dc.drawUnitQuad();
} finally {
gl.glPopMatrix();
}
}
@Override
public void render(DrawContext dc) {
if (dc.isPickingMode() && this.isResizeable()) return;
// This is called twice: once during normal rendering, then again during ordered surface
// rendering. During
// normal renering we render both the interior and border shapes. During ordered surface
// rendering, both
// shapes are already added to the DrawContext and both will be individually processed.
// Therefore we just
// call our superclass behavior
if (dc.isOrderedRenderingMode()) {
super.render(dc);
return;
}
if (!this.isResizeable()) {
if (this.hasSelection()) {
this.doRender(dc);
}
return;
}
PickedObjectList pos = dc.getPickedObjects();
PickedObject terrainObject = pos != null ? pos.getTerrainObject() : null;
if (terrainObject == null) return;
if (this.getStartPosition() != null) {
Position end = terrainObject.getPosition();
if (!this.getStartPosition().equals(end)) {
this.setEndPosition(end);
this.setSector(Sector.boundingSector(this.getStartPosition(), this.getEndPosition()));
this.doRender(dc);
}
} else {
this.setStartPosition(pos.getTerrainObject().getPosition());
}
}
protected void applyColor(DrawContext dc, java.awt.Color color, double opacity) {
if (dc.isPickingMode()) return;
double finalOpacity = opacity * (color.getAlpha() / 255.0);
OGLUtil.applyColor(dc.getGL(), color, finalOpacity, true);
}
protected void drawIcon(DrawContext dc) {
if (this.getIconFilePath() == null) return;
GL gl = dc.getGL();
OGLStackHandler ogsh = new OGLStackHandler();
try {
// Initialize texture if necessary
Texture iconTexture = dc.getTextureCache().getTexture(this.getIconFilePath());
if (iconTexture == null) {
this.initializeTexture(dc);
iconTexture = dc.getTextureCache().getTexture(this.getIconFilePath());
if (iconTexture == null) {
String msg = Logging.getMessage("generic.ImageReadFailed");
Logging.logger().finer(msg);
return;
}
}
gl.glDisable(GL.GL_DEPTH_TEST);
double width = this.getScaledIconWidth();
double height = this.getScaledIconHeight();
// Load a parallel projection with xy dimensions (viewportWidth, viewportHeight)
// into the GL projection matrix.
java.awt.Rectangle viewport = dc.getView().getViewport();
ogsh.pushProjectionIdentity(gl);
double maxwh = width > height ? width : height;
gl.glOrtho(0d, viewport.width, 0d, viewport.height, -0.6 * maxwh, 0.6 * maxwh);
// Translate and scale
ogsh.pushModelviewIdentity(gl);
double scale = this.computeScale(viewport);
Vec4 locationSW = this.computeLocation(viewport, scale);
gl.glTranslated(locationSW.x(), locationSW.y(), locationSW.z());
// Scale to 0..1 space
gl.glScaled(scale, scale, 1);
gl.glScaled(width, height, 1d);
if (!dc.isPickingMode()) {
gl.glEnable(GL.GL_BLEND);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
// Draw background color behind the map
gl.glColor4ub(
(byte) this.backColor.getRed(),
(byte) this.backColor.getGreen(),
(byte) this.backColor.getBlue(),
(byte) (this.backColor.getAlpha() * this.getOpacity()));
dc.drawUnitQuad();
// Draw world map icon
gl.glColor4d(1d, 1d, 1d, this.getOpacity());
gl.glEnable(GL.GL_TEXTURE_2D);
iconTexture.bind();
TextureCoords texCoords = iconTexture.getImageTexCoords();
dc.drawUnitQuad(texCoords);
gl.glBindTexture(GL.GL_TEXTURE_2D, 0);
gl.glDisable(GL.GL_TEXTURE_2D);
// Draw crosshair for current location
gl.glLoadIdentity();
gl.glTranslated(locationSW.x(), locationSW.y(), locationSW.z());
// Scale to width x height space
gl.glScaled(scale, scale, 1);
// Set color
float[] colorRGB = this.color.getRGBColorComponents(null);
gl.glColor4d(colorRGB[0], colorRGB[1], colorRGB[2], this.getOpacity());
// Draw crosshair
Position groundPos = this.computeGroundPosition(dc, dc.getView());
if (groundPos != null) {
int x = (int) (width * (groundPos.getLongitude().degrees + 180) / 360);
int y = (int) (height * (groundPos.getLatitude().degrees + 90) / 180);
int w = 10; // cross branch length
// Draw
gl.glBegin(GL.GL_LINE_STRIP);
gl.glVertex3d(x - w, y, 0);
gl.glVertex3d(x + w + 1, y, 0);
gl.glEnd();
gl.glBegin(GL.GL_LINE_STRIP);
gl.glVertex3d(x, y - w, 0);
gl.glVertex3d(x, y + w + 1, 0);
gl.glEnd();
}
// Draw view footprint in map icon space
if (this.showFootprint) {
this.footPrintPositions = this.computeViewFootPrint(dc, 32);
if (this.footPrintPositions != null) {
gl.glBegin(GL.GL_LINE_STRIP);
LatLon p1 = this.footPrintPositions.get(0);
for (LatLon p2 : this.footPrintPositions) {
int x = (int) (width * (p2.getLongitude().degrees + 180) / 360);
int y = (int) (height * (p2.getLatitude().degrees + 90) / 180);
// Draw
if (LatLon.locationsCrossDateline(p1, p2)) {
int y1 = (int) (height * (p1.getLatitude().degrees + 90) / 180);
gl.glVertex3d(x < width / 2 ? width : 0, (y1 + y) / 2, 0);
gl.glEnd();
gl.glBegin(GL.GL_LINE_STRIP);
gl.glVertex3d(x < width / 2 ? 0 : width, (y1 + y) / 2, 0);
}
gl.glVertex3d(x, y, 0);
p1 = p2;
}
gl.glEnd();
}
}
// Draw 1px border around and inside the map
gl.glBegin(GL.GL_LINE_STRIP);
gl.glVertex3d(0, 0, 0);
gl.glVertex3d(width, 0, 0);
gl.glVertex3d(width, height - 1, 0);
gl.glVertex3d(0, height - 1, 0);
gl.glVertex3d(0, 0, 0);
gl.glEnd();
} else {
// Picking
this.pickSupport.clearPickList();
this.pickSupport.beginPicking(dc);
// Where in the world are we picking ?
Position pickPosition =
computePickPosition(
dc, locationSW, new Dimension((int) (width * scale), (int) (height * scale)));
Color color = dc.getUniquePickColor();
int colorCode = color.getRGB();
this.pickSupport.addPickableObject(colorCode, this, pickPosition, false);
gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
dc.drawUnitQuad();
this.pickSupport.endPicking(dc);
this.pickSupport.resolvePick(dc, dc.getPickPoint(), this);
}
} finally {
dc.restoreDefaultDepthTesting();
dc.restoreDefaultCurrentColor();
if (dc.isPickingMode()) dc.restoreDefaultBlending();
ogsh.pop(gl);
}
}
/**
* Returns true if the IconRenderer should record feedback about how the specified WWIcon has been
* processed.
*
* @param dc the current DrawContext.
* @param icon the WWIcon to record feedback information for.
* @return true to record feedback; false otherwise.
*/
protected boolean isFeedbackEnabled(DrawContext dc, WWIcon icon) {
if (dc.isPickingMode()) return false;
Boolean b = (Boolean) icon.getValue(AVKey.FEEDBACK_ENABLED);
return (b != null && b);
}
protected Vec4 drawIcon(DrawContext dc, OrderedIcon uIcon) {
if (uIcon.point == null) {
String msg = Logging.getMessage("nullValue.PointIsNull");
Logging.logger().severe(msg);
// Record feedback data for this WWIcon if feedback is enabled.
if (uIcon.icon != null) this.recordFeedback(dc, uIcon.icon, null, null);
return null;
}
WWIcon icon = uIcon.icon;
if (dc.getView().getFrustumInModelCoordinates().getNear().distanceTo(uIcon.point) < 0) {
// Record feedback data for this WWIcon if feedback is enabled.
this.recordFeedback(dc, icon, uIcon.point, null);
return null;
}
final Vec4 screenPoint = dc.getView().project(uIcon.point);
if (screenPoint == null) {
// Record feedback data for this WWIcon if feedback is enabled.
this.recordFeedback(dc, icon, uIcon.point, null);
return null;
}
double pedestalScale;
double pedestalSpacing;
if (this.pedestal != null) {
pedestalScale = this.pedestal.getScale();
pedestalSpacing = pedestal.getSpacingPixels();
} else {
pedestalScale = 0d;
pedestalSpacing = 0d;
}
GL2 gl = dc.getGL().getGL2(); // GL initialization checks for GL2 compatibility.
this.setDepthFunc(dc, uIcon, screenPoint);
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glLoadIdentity();
Dimension size = icon.getSize();
double width = size != null ? size.getWidth() : icon.getImageTexture().getWidth(dc);
double height = size != null ? size.getHeight() : icon.getImageTexture().getHeight(dc);
gl.glTranslated(
screenPoint.x - width / 2, screenPoint.y + (pedestalScale * height) + pedestalSpacing, 0d);
if (icon.isHighlighted()) {
double heightDelta = this.pedestal != null ? 0 : height / 2; // expand only above the pedestal
gl.glTranslated(width / 2, heightDelta, 0);
gl.glScaled(icon.getHighlightScale(), icon.getHighlightScale(), icon.getHighlightScale());
gl.glTranslated(-width / 2, -heightDelta, 0);
}
Rectangle rect =
new Rectangle(
(int) (screenPoint.x - width / 2),
(int) (screenPoint.y),
(int) width,
(int) (height + (pedestalScale * height) + pedestalSpacing));
if (dc.isPickingMode()) {
// If in picking mode and pick clipping is enabled, check to see if the icon is within the
// pick volume.
if (this.isPickFrustumClippingEnabled() && !dc.getPickFrustums().intersectsAny(rect)) {
// Record feedback data for this WWIcon if feedback is enabled.
this.recordFeedback(dc, icon, uIcon.point, rect);
return screenPoint;
} else {
java.awt.Color color = dc.getUniquePickColor();
int colorCode = color.getRGB();
this.pickSupport.addPickableObject(colorCode, icon, uIcon.getPosition(), false);
gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
}
}
if (icon.getBackgroundTexture() != null)
this.applyBackground(dc, icon, screenPoint, width, height, pedestalSpacing, pedestalScale);
if (icon.getImageTexture().bind(dc)) {
TextureCoords texCoords = icon.getImageTexture().getTexCoords();
gl.glScaled(width, height, 1d);
dc.drawUnitQuad(texCoords);
}
if (this.pedestal != null && this.pedestal.getImageTexture() != null) {
gl.glLoadIdentity();
gl.glTranslated(screenPoint.x - (pedestalScale * (width / 2)), screenPoint.y, 0d);
gl.glScaled(width * pedestalScale, height * pedestalScale, 1d);
if (this.pedestal.getImageTexture().bind(dc)) {
TextureCoords texCoords = this.pedestal.getImageTexture().getTexCoords();
dc.drawUnitQuad(texCoords);
}
}
// Record feedback data for this WWIcon if feedback is enabled.
this.recordFeedback(dc, icon, uIcon.point, rect);
return screenPoint;
}
// Rendering
public void draw(DrawContext dc) {
GL gl = dc.getGL();
boolean attribsPushed = false;
boolean modelviewPushed = false;
boolean projectionPushed = false;
try {
gl.glPushAttrib(
GL.GL_DEPTH_BUFFER_BIT
| GL.GL_COLOR_BUFFER_BIT
| GL.GL_ENABLE_BIT
| GL.GL_TEXTURE_BIT
| GL.GL_TRANSFORM_BIT
| GL.GL_VIEWPORT_BIT
| GL.GL_CURRENT_BIT);
attribsPushed = true;
gl.glDisable(GL.GL_TEXTURE_2D); // no textures
gl.glEnable(GL.GL_BLEND);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
gl.glDisable(GL.GL_DEPTH_TEST);
double width = this.size.width;
double height = this.size.height;
// Load a parallel projection with xy dimensions (viewportWidth, viewportHeight)
// into the GL projection matrix.
java.awt.Rectangle viewport = dc.getView().getViewport();
gl.glMatrixMode(javax.media.opengl.GL.GL_PROJECTION);
gl.glPushMatrix();
projectionPushed = true;
gl.glLoadIdentity();
double maxwh = width > height ? width : height;
gl.glOrtho(0d, viewport.width, 0d, viewport.height, -0.6 * maxwh, 0.6 * maxwh);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPushMatrix();
modelviewPushed = true;
gl.glLoadIdentity();
// Scale to a width x height space
// located at the proper position on screen
double scale = this.computeScale(viewport);
Vec4 locationSW = this.computeLocation(viewport, scale);
gl.glTranslated(locationSW.x(), locationSW.y(), locationSW.z());
gl.glScaled(scale, scale, 1);
// Compute scale size in real world
Position referencePosition = dc.getViewportCenterPosition();
if (referencePosition != null) {
Vec4 groundTarget = dc.getGlobe().computePointFromPosition(referencePosition);
Double distance = dc.getView().getEyePoint().distanceTo3(groundTarget);
this.pixelSize = dc.getView().computePixelSizeAtDistance(distance);
Double scaleSize = this.pixelSize * width * scale; // meter
String unitLabel = "m";
if (this.unit.equals(UNIT_METRIC)) {
if (scaleSize > 10000) {
scaleSize /= 1000;
unitLabel = "Km";
}
} else if (this.unit.equals(UNIT_IMPERIAL)) {
scaleSize *= 3.280839895; // feet
unitLabel = "ft";
if (scaleSize > 5280) {
scaleSize /= 5280;
unitLabel = "mile(s)";
}
}
// Rounded division size
int pot = (int) Math.floor(Math.log10(scaleSize));
if (!Double.isNaN(pot)) {
int digit = Integer.parseInt(String.format("%.0f", scaleSize).substring(0, 1));
double divSize = digit * Math.pow(10, pot);
if (digit >= 5) divSize = 5 * Math.pow(10, pot);
else if (digit >= 2) divSize = 2 * Math.pow(10, pot);
double divWidth = width * divSize / scaleSize;
// Draw scale
if (!dc.isPickingMode()) {
// Set color using current layer opacity
Color backColor = this.getBackgroundColor(this.color);
float[] colorRGB = backColor.getRGBColorComponents(null);
gl.glColor4d(
colorRGB[0],
colorRGB[1],
colorRGB[2],
(double) backColor.getAlpha() / 255d * this.getOpacity());
gl.glTranslated((width - divWidth) / 2, 0d, 0d);
this.drawScale(dc, divWidth, height);
colorRGB = this.color.getRGBColorComponents(null);
gl.glColor4d(colorRGB[0], colorRGB[1], colorRGB[2], this.getOpacity());
gl.glTranslated(-1d / scale, 1d / scale, 0d);
this.drawScale(dc, divWidth, height);
// Draw label
String label = String.format("%.0f ", divSize) + unitLabel;
gl.glLoadIdentity();
gl.glDisable(GL.GL_CULL_FACE);
drawLabel(
dc,
label,
locationSW.add3(
new Vec4(divWidth * scale / 2 + (width - divWidth) / 2, height * scale, 0)));
} else {
// Picking
this.pickSupport.clearPickList();
this.pickSupport.beginPicking(dc);
// Draw unique color across the map
Color color = dc.getUniquePickColor();
int colorCode = color.getRGB();
// Add our object(s) to the pickable list
this.pickSupport.addPickableObject(colorCode, this, referencePosition, false);
gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
gl.glTranslated((width - divWidth) / 2, 0d, 0d);
this.drawRectangle(dc, divWidth, height);
// Done picking
this.pickSupport.endPicking(dc);
this.pickSupport.resolvePick(dc, dc.getPickPoint(), this);
}
}
}
} finally {
if (projectionPushed) {
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glPopMatrix();
}
if (modelviewPushed) {
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPopMatrix();
}
if (attribsPushed) gl.glPopAttrib();
}
}
