/**
* Tests whether this tile is in the given view frustum. If the tile was not loaded so far, the
* test will assume a minimum height of -500 and a maximum height of 8000.
*
* @param frustum the current view frustum
* @return whether the tile is in the frustum
*/
boolean isInFrustum(Frustum frustum) {
Coordinates center = bounds.getCenter();
return (frustum == null)
|| frustum.isBoxWithin(
new float[] {
center.getLongitude(), center.getLatitude(), 0.5f * (minHeight + maxHeight)
},
new float[] {
center.getLongitude() - bounds.getLeft(),
center.getLatitude() - bounds.getTop(),
0.5f * (maxHeight - minHeight)
});
}
private void renderPin(GL gl, Coordinates position, float[] color, float size) {
float height = heightmap.getHeight(projection.getGeoCoordinates(position));
gl.glPushMatrix();
double[] model = new double[16];
gl.glGetDoublev(GL_MODELVIEW_MATRIX, model, 0);
double zoomH =
0.1 / Math.sqrt((model[0] * model[0]) + (model[1] * model[1]) + (model[2] * model[2]));
double zoomZ =
0.1 / Math.sqrt((model[8] * model[8]) + (model[9] * model[9]) + (model[10] * model[10]));
gl.glTranslatef(position.getLongitude(), position.getLatitude(), height);
gl.glScaled(zoomH * size, zoomH * size, zoomZ * size);
gl.glDisable(GL_TEXTURE_2D);
gl.glRotatef(20, 0.3f, 1, 0);
GLU glu = new GLU();
GLUquadric quadric = glu.gluNewQuadric();
// glu.gluQuadricNormals(quadric, GLU.GLU_FLAT);
gl.glColor3f(0.5f, 0.5f, 0.5f);
gl.glEnable(GL_LIGHTING);
glu.gluCylinder(quadric, 0.03, 0.03, 0.6f, 5, 1);
gl.glTranslatef(0, 0, 0.6f);
gl.glColor3f(color[0], color[1], color[2]);
gl.glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
glu.gluSphere(quadric, 0.12, 8, 8);
// glu.gluCylinder(quadric, 0.2, 0.1, 0.5, 8, 1);
gl.glDisable(GL_LIGHTING);
glu.gluDeleteQuadric(quadric);
gl.glPopMatrix();
}
/**
* Renders the tile to the given context, in the process building all needed resources.
*
* @param gl
*/
public void render(GL gl) {
projection = ProjectionFactory.getCurrentProjection();
heightmap = State.getInstance().getLoadedHeightmap();
// BUILD TEXTURES IF NECESSARY
if (!gl.glIsTexture(textureID)) {
textureID = createTexture(gl, getImage(), false);
// prerenderToTexture(gl);
}
if (!gl.glIsTexture(grainTextureID)) {
createGrainTexture(gl);
}
// RENDER TILE FROM DISPLAY LIST, OR ELSE BUILD DISPLAY LIST
if (gl.glIsList(displaylistID)) {
gl.glCallList(displaylistID);
} else {
displaylistID = gl.glGenLists(1);
gl.glNewList(displaylistID, GL_COMPILE_AND_EXECUTE);
gl.glActiveTexture(GL_TEXTURE0);
gl.glEnable(GL_TEXTURE_2D);
gl.glBindTexture(GL_TEXTURE_2D, grainTextureID);
gl.glActiveTexture(GL_TEXTURE1);
gl.glEnable(GL_TEXTURE_2D);
gl.glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
gl.glBindTexture(GL_TEXTURE_2D, textureID);
gl.glColor3f(1, 1, 1);
float[] color = new float[3];
float hRes = HEIGHT_RESOLUTION - 1;
float stepSize = bounds.getWidth() / hRes;
Coordinates pos = new Coordinates();
for (int x = 0; x < hRes; x++) {
gl.glBegin(GL_TRIANGLE_STRIP);
for (int y = 0; y <= hRes; y++) {
for (int i = 0; i < 2; i++) {
pos.setLatitude(bounds.getTop() + y * stepSize);
pos.setLongitude(bounds.getLeft() + (x + i) * stepSize);
gl.glMultiTexCoord2f(
GL_TEXTURE0, (x + i) / (float) GRAIN_RESOLUTION, y / (float) GRAIN_RESOLUTION);
gl.glMultiTexCoord2f(GL_TEXTURE1, (x + i) / hRes, y / hRes);
float height = heights[x + HEIGHT_BORDER + i][y + HEIGHT_BORDER];
getHeightColor(color, height);
float shade = getShade(x + i, y, stepSize);
gl.glColor3f(color[0] * shade, color[1] * shade, color[2] * shade);
gl.glVertex3f(pos.getLongitude(), pos.getLatitude(), height);
}
}
gl.glEnd();
}
gl.glDisable(GL_TEXTURE_2D);
gl.glActiveTexture(GL_TEXTURE0);
renderPOIs(gl);
gl.glEndList();
}
}
private void drawVertex(GL gl, Coordinates point) {
gl.glVertex3f(point.getLongitude(), point.getLatitude(), 0);
}
public void prerenderToTexture(GL gl) {
int texSize = 256;
final int[] tmp = new int[1];
gl.glGenTextures(1, tmp, 0);
textureID = tmp[0];
gl.glBindTexture(GL_TEXTURE_2D, textureID);
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
gl.glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
gl.glTexImage2D(
GL_TEXTURE_2D, 0, GL_RGBA, texSize, texSize, 0, GL_BGRA, GL_UNSIGNED_BYTE, null);
final int[] fbo = new int[1];
gl.glGenFramebuffersEXT(1, IntBuffer.wrap(fbo));
gl.glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo[0]);
gl.glFramebufferTexture2DEXT(
GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, textureID, 0);
gl.glDrawBuffers(1, IntBuffer.wrap(new int[] {GL_COLOR_ATTACHMENT0_EXT}));
final int[] rba = new int[1];
gl.glGenRenderbuffersEXT(1, IntBuffer.wrap(rba));
gl.glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rba[0]);
gl.glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, texSize, texSize);
gl.glFramebufferRenderbufferEXT(
GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, rba[0]);
gl.glPushMatrix();
gl.glLoadIdentity();
gl.glPushAttrib(GL_VIEWPORT_BIT);
gl.glViewport(0, 0, texSize, texSize);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glPushMatrix();
gl.glLoadIdentity();
gl.glOrtho(0, texSize, 0, texSize, 0, 10);
gl.glMatrixMode(GL.GL_MODELVIEW);
Set<MapElement> map = State.getInstance().getMapInfo().queryElements(detailLevel, bounds, true);
gl.glDisable(GL_TEXTURE_2D);
gl.glColor3f(1, 1, 1);
for (MapElement element : map) {
if (element instanceof Street) {
drawLine(
gl,
((Street) element).getDrawingSize() / (float) Projection.getZoomFactor(detailLevel),
((Street) element).getNodes());
}
}
gl.glColor3f(0.3f, 0.3f, 0.3f);
for (MapElement element : map) {
if ((element instanceof Area) && (((Area) element).getWayInfo().isBuilding())) {
gl.glBegin(GL_POLYGON);
for (Node node : ((Area) element).getNodes()) {
Coordinates pos = getLocalCoordinates(node.getPos());
gl.glVertex3f(pos.getLongitude(), pos.getLatitude(), 0f);
}
gl.glEnd();
}
}
gl.glEnable(GL_TEXTURE_2D);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glPopMatrix();
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPopAttrib();
gl.glPopMatrix();
gl.glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
gl.glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
gl.glDeleteFramebuffersEXT(1, fbo, 0);
gl.glDeleteRenderbuffersEXT(1, rba, 0);
}
