82 lines
2.5 KiB
Java
82 lines
2.5 KiB
Java
package lsystem.screen.gl3d;
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import com.jogamp.opengl.GL2;
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import com.jogamp.opengl.util.gl2.GLUT;
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import lsystem.engine.Element;
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import lsystem.engine.ElementProperties;
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public class DrawHelper {
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public static void placeCamera(GL2 gl, AbstractCanvas canvas) {
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gl.glRotatef(canvas.camera[4], 1f, 0f, 0f);
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gl.glRotatef(canvas.camera[3], 0f, 1f, 0f);
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gl.glRotatef(canvas.camera[5], 0f, 0f, 1f);
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}
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public static void drawAxes(GL2 gl, GLUT glut) {
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gl.glRasterPos3f(0f, 0f, 0f);
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gl.glColor3f(255f, 0f, 0f);
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gl.glBegin(GL2.GL_LINES);
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gl.glVertex3f(0f, 0f, 0f);
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gl.glVertex3f(1f, 0f, 0f);
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gl.glVertex3f(0f, 0f, 0f);
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gl.glVertex3f(0f, 1f, 0f);
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gl.glVertex3f(0f, 0f, 0f);
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gl.glVertex3f(0f, 0f, 1f);
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gl.glColor3f(255f, 255f, 255f);
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int limit = 20;
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for (int i = -limit; i < limit + 1; i++) {
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gl.glVertex3f(-limit, 0f, i);
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gl.glVertex3f(limit, 0f, i);
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gl.glVertex3f(i, 0, -limit);
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gl.glVertex3f(i, 0, limit);
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}
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gl.glEnd();
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gl.glRasterPos3f(1.1f, 0.0f, 0.0f);
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glut.glutBitmapCharacter(GLUT.BITMAP_HELVETICA_18, 'X');
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gl.glRasterPos3f(0.0f, 1.1f, 0.0f);
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glut.glutBitmapCharacter(GLUT.BITMAP_HELVETICA_18, 'Y'); // draw the y axis
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gl.glRasterPos3f(0.0f, 0.0f, 1.1f);
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glut.glutBitmapCharacter(GLUT.BITMAP_HELVETICA_18, 'Z'); // draw the z axis
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}
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public static void drawLSystem(AbstractListener listener, GL2 gl, GLUT glut, Element element) {
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gl.glPushMatrix();
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gl.glRotatef(element.rotation[0] * 360, 1f, 0f, 0f);
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gl.glRotatef(element.rotation[1] * 360, 0f, 1f, 0f);
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gl.glRotated(-Math.sin(element.rotation[0]) * 180 - Math.sin(element.rotation[1]) * 180, 0f, 0f, 1f);
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gl.glTranslated(-Math.sin(element.rotation[0]), -Math.sin(element.rotation[1]), -Math.sin(element.rotation[0] + element.rotation[1]));
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if(element.property == ElementProperties.DRAW) {
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if(listener.firstGen) {
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listener.canvas.camera[1] += 0.10f;
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listener.canvas.camera[2] += 0.10f;
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}
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glut.glutSolidCylinder(0.25f, 1f, 10, 10);
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gl.glTranslatef(0f, 0f, 1f);
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}
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for(Element child : element.children) {
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drawLSystem(listener, gl, glut, child);
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}
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gl.glPopMatrix();
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}
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@SuppressWarnings("unused")
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public static void drawDebugInformation(GL2 gl, GLUT glut, AbstractCanvas canvas) {
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gl.glRasterPos3f(canvas.camera[0], canvas.camera[1], canvas.camera[2] - 1);
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gl.glColor3f(1f, 1f, 1f);
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glut.glutBitmapString(GLUT.BITMAP_HELVETICA_18,
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"x=" + canvas.camera[0] + ", y=" + canvas.camera[1] + ", z=" + canvas.camera[2] + "\n yaw = "
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+ canvas.camera[3] + " pitch = " + canvas.camera[4] + " roll = " + canvas.camera[5]);
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}
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}
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