- * Recursive function to draw a square by drawing smaller and smaller
- * divisions of the square, determined by drawFloorRecurse.
- * @param recurseLevel Current level of recursion, only pass 0
- * @param x1 top-left x
- * @param z1 top-left z
- * @param x2 bottom-left x
- * @param z2 bottom-left z
- */
-void drawSquare(int recurseLevel, float x1, float z1, float x2, float z2) {
- if ( drawFloorRecurse != recurseLevel ) {
- // Calculate middle points
- float xm = (x1 + x2) / 2.0;
- float zm = (z1 + z2) / 2.0;
-
- // Increment recursion level
- int rnew = recurseLevel + 1;
-
- // Split into four sub-quads
- drawSquare(rnew, x1, z1, xm, zm);
- drawSquare(rnew, x1, zm, xm, z2);
- drawSquare(rnew, xm, zm, x2, z2);
- drawSquare(rnew, xm, z1, x2, zm);
-
- } else {
- // Draw square.
- // **NOTE: We're drawing large strips, instead of squares, which might cause a lighting problem
- glBegin(GL_QUADS);
- //glNormal3f(0,1,0);
- glColor3f(1.0, 1.0, 1.0);
- glVertex3f(x1, 0.0, z1);
- glVertex3f(x1, 0.0, z2);
- glVertex3f(x2, 0.0, z2);
- glVertex3f(x2, 0.0, z1);
- glEnd();
- }
-}
-
-/**
- * Draw a floor by calling the drawSquare recursion