102 lines
3.3 KiB
Java
102 lines
3.3 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.screen.AbstractCanvas;
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import lsystem.screen.gl2d.Point2;
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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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for (int i = -20; i < 21; i++) {
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gl.glVertex3f(-20f, 0f, i);
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gl.glVertex3f(20f, 0f, i);
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gl.glVertex3f(i, 0, -20f);
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gl.glVertex3f(i, 0, 20f);
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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 drawRectangularPrism(GL2 gl, float leftBottomX, float leftBottomY, float leftBottomZ,
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float rightUpX, float rightUpY, float rightUpZ) {
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gl.glPushMatrix();
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gl.glBegin(GL2.GL_QUADS);
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gl.glVertex3f(leftBottomX, leftBottomY, leftBottomZ);
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gl.glVertex3f(rightUpX, leftBottomY, leftBottomZ);
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gl.glVertex3f(rightUpX, rightUpY, leftBottomZ);
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gl.glVertex3f(leftBottomX, rightUpY, leftBottomZ);
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gl.glVertex3f(leftBottomX, leftBottomY, leftBottomZ);
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gl.glVertex3f(leftBottomX, leftBottomY, rightUpZ);
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gl.glVertex3f(leftBottomX, rightUpY, rightUpZ);
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gl.glVertex3f(leftBottomX, rightUpY, leftBottomZ);
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gl.glVertex3f(rightUpX, leftBottomY, leftBottomZ);
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gl.glVertex3f(rightUpX, leftBottomY, rightUpZ);
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gl.glVertex3f(rightUpX, rightUpY, rightUpZ);
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gl.glVertex3f(rightUpX, rightUpY, leftBottomZ);
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gl.glVertex3f(leftBottomX, leftBottomY, rightUpZ);
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gl.glVertex3f(rightUpX, leftBottomY, rightUpZ);
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gl.glVertex3f(rightUpX, rightUpY, rightUpZ);
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gl.glVertex3f(leftBottomX, rightUpY, rightUpZ);
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gl.glVertex3f(leftBottomX, leftBottomY, leftBottomZ);
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gl.glVertex3f(rightUpX, leftBottomY, leftBottomZ);
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gl.glVertex3f(rightUpX, leftBottomY, rightUpZ);
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gl.glVertex3f(leftBottomX, leftBottomY, rightUpZ);
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gl.glVertex3f(leftBottomX, rightUpY, leftBottomZ);
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gl.glVertex3f(rightUpX, rightUpY, leftBottomZ);
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gl.glVertex3f(rightUpX, rightUpY, rightUpZ);
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gl.glVertex3f(leftBottomX, rightUpY, rightUpZ);
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gl.glEnd();
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gl.glPopMatrix();
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}
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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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public static void drawStick(GL2 gl, Point2 origin, Point2 newOrigin) {
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gl.glBegin(GL2.GL_LINES);
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gl.glVertex2f(origin.getX(), origin.getY());
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gl.glVertex2f(newOrigin.getX(), newOrigin.getY());
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gl.glEnd();
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}
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}
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