/**
* Sets a specified texture's OpenGL <code>Texture</code> parameters.
*
* @param dc the current draw context.
* @param texture the texture whose parameters to set.
*/
protected void setTextureParameters(DrawContext dc, Texture texture) {
// Enable the appropriate mip-mapping texture filters if the caller has specified that
// mip-mapping should be
// enabled, and the texture itself supports mip-mapping.
boolean useMipMapFilter =
this.useMipMaps
&& (this.getTextureData().getMipmapData() != null
|| texture.isUsingAutoMipmapGeneration());
GL gl = dc.getGL();
gl.glTexParameteri(
GL.GL_TEXTURE_2D,
GL.GL_TEXTURE_MIN_FILTER,
useMipMapFilter ? GL.GL_LINEAR_MIPMAP_LINEAR : GL.GL_LINEAR);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_LINEAR);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_CLAMP_TO_EDGE);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_CLAMP_TO_EDGE);
if (this.isUseAnisotropy() && useMipMapFilter) {
double maxAnisotropy = dc.getGLRuntimeCapabilities().getMaxTextureAnisotropy();
if (dc.getGLRuntimeCapabilities().isUseAnisotropicTextureFilter() && maxAnisotropy >= 2.0) {
gl.glTexParameterf(
GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAX_ANISOTROPY_EXT, (float) maxAnisotropy);
}
}
}
public void applyInternalTransform(DrawContext dc) {
if (dc == null) {
String message = Logging.getMessage("nullValue.DrawContextIsNull");
Logging.logger().severe(message);
throw new IllegalStateException(message);
}
Texture texture = this.getTexture(dc);
if (texture == null) texture = this.requestTexture(dc);
if (texture == null) return;
if (texture.getMustFlipVertically()) {
GL gl = GLContext.getCurrent().getGL();
gl.glMatrixMode(GL.GL_TEXTURE);
gl.glLoadIdentity();
gl.glScaled(1, -1, 1);
gl.glTranslated(0, -1, 0);
}
}
public void render3D(GL gl, GLDrawable glc) {
if (pts2d.size() < 4) return;
if (fill != null || texture != null) {
if (texture == null) {
setColor(gl, fill);
gl.glDisable(GL.GL_TEXTURE_2D);
} else {
setColor(gl, Color.white);
Texture gltexture = texture.getTexture(glc);
gltexture.enable();
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_S, GL.GL_REPEAT);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_WRAP_T, GL.GL_REPEAT);
gl.glTexEnvf(GL.GL_TEXTURE_ENV, GL.GL_TEXTURE_ENV_MODE, GL.GL_MODULATE);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MAG_FILTER, GL.GL_NEAREST);
gl.glTexParameteri(GL.GL_TEXTURE_2D, GL.GL_TEXTURE_MIN_FILTER, GL.GL_NEAREST);
gltexture.bind();
}
gl.glPushMatrix();
// get 4 control points of portal
Point2D p0 = pts2d.get(0);
Point2D p1 = pts2d.get(1);
Point2D p2 = pts2d.get(2);
Point2D p3 = pts2d.get(3);
// render 1st side of portal with height extra[0]
renderOneside(p0, p1, gl, extra[0]);
// render 1st side of portal with height extra[1]
renderOneside(p2, p3, gl, extra[1]);
gl.glPopMatrix();
}
}
private void renderOneside(Point2D a, Point2D b, GL gl, double d) {
gl.glClear(0);
Vector3D t = new Vector3D(b.x - a.x, 0, b.y - a.y);
Vector3D n = new Vector3D(0, 1, 0);
Vector3D cross = n.cross(t);
gl.glNormal3d(cross.x, cross.y, cross.z);
// Texture adjustment vars
double length =
scale * Math.sqrt((a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y)) / 100 + 0.1;
double height = scale;
// draw the 4 points of it
gl.glBegin(GL.GL_POLYGON);
gl.glTexCoord2d(0, 0);
gl.glVertex3d(a.x, d, a.y);
gl.glTexCoord2d(0, height);
gl.glVertex3d(a.x, d + 100, a.y);
gl.glTexCoord2d(length, height);
gl.glVertex3d(b.x, d + 100, b.y);
gl.glTexCoord2d(length, 0);
gl.glVertex3d(b.x, d, b.y);
gl.glEnd();
}
/** paint the portal using gl. */
public void paint(GL gl, GLDrawable glc) {
if (fill != null) {
setColor(gl, fill);
gl.glDisable(GL.GL_TEXTURE_2D);
}
gl.glLineWidth(lineWidth());
gl.glBegin(GL.GL_LINES); // draw each wall
for (int i = 0; i < pts2d.size(); i++) {
Point2D p = (Point2D) (pts2d.get(i));
gl.glVertex2d(p.x, p.y);
}
gl.glEnd();
if (pts2d.size() == 4) {
/* Connect mid point of the two line segments with dotted line*/
gl.glLineStipple(1, (short) 0x0F0F);
gl.glEnable(GL.GL_LINE_STIPPLE);
gl.glLineWidth(1);
gl.glBegin(GL.GL_LINES);
Point2D mid = pts2d.get(0).interp(pts2d.get(1), 0.5);
gl.glVertex2d(mid.x, mid.y);
mid = pts2d.get(2).interp(pts2d.get(3), 0.5);
gl.glVertex2d(mid.x, mid.y);
gl.glEnd();
gl.glDisable(GL.GL_LINE_STIPPLE);
}
}