Art›Sketch 3d Terrain Split

sketch_3d_terrain_split.pde

boolean animating = true;
boolean wireframe = false;

int cols, rows;
int scl = 8;
int w = 1600;
int h = 1200;
float xyoffstep;

float flightSpeedPS = 2;
float flying = 0;
float framescl = 0;

float[][] terrain;

void setup() {
  size(600, 600, P3D);
  
  cols = ceil( (w / scl) );
  rows = ceil( (h / scl) );
  
  xyoffstep = 0.05;
  
  terrain = new float[cols][rows];
}

void draw() {
  float delta = ((frameRate / 60.0) / 60.0);
  
  if(animating) {
    flying -= (flightSpeedPS * delta);
  }
  
  float yoff = flying;
  
  for(int y = 0; y < rows; y++) {
    float xoff = 0;
    
    for(int x = 0; x < cols; x++) {
      terrain[ x ][ y ] = map(noise(xoff, yoff), 0, 1, -100, 100);
      
      xoff += xyoffstep;
    }
    
    yoff += xyoffstep;
  }
  
  background(0);
  
  text("scl = "+ Integer.toString(scl), 15, 15);
  text("xyoffstep = "+ Float.toString(xyoffstep), 15, 30);
  text("xyoffstep/scl  = "+ Float.toString(xyoffstep/scl), 15, 45);
  
  float splitd = ((float)mouseX / (float)width);
  int split = (ceil(((float)mouseX / (float)width) * cols) + 1);
  text("split  = "+ Integer.toString(split), 15, 60);
  text("mouseX  = "+ Integer.toString(mouseX), 15, 75);
  text("width  = "+ Integer.toString(width), 15, 90);
  text("split  = "+ Float.toString(splitd), 15, 105);
  
  translate(width/2, height/2+50);
  rotateX(PI/3);
  
  //translate(width/2, height/2);
  
  // set light
  pushMatrix();
  translate(-width/2, -height/2+50);
  
  float plX = (width / 2);//float plX = (mouseX - (width / 2));
  float plY = height;//float plY = (mouseY - (height / 2));
  float plZ = (200);
  
  translate(plX, plY, plZ);
  stroke(255);
  noFill();
  box(15);
  
  pointLight(51, 250, 126, 0, 0, 0);
  popMatrix();
  
  translate((-w / 2), (-h / 2));
  
  // colored mesh
  noStroke();
  fill(255);
  for(int y = 0; y < (rows - 1); y++) {
    beginShape(TRIANGLE_STRIP);
    
    for(int x = 0; x < split; x++) {
      vertex((x * scl), (y * scl), terrain[ x ][ y ]);
      vertex((x * scl), ((y + 1) * scl), terrain[ x ][ (y + 1) ]);
    }
    
    endShape();
  }
  
  // wireframe
  stroke(200);
  noFill();
  for(int y = 0; y < (rows - 1); y++) {
    beginShape(TRIANGLE_STRIP);
    
    for(int x = (split - 1); x < cols; x++) {
      vertex((x * scl), (y * scl), terrain[ x ][ y ]);
      vertex((x * scl), ((y + 1) * scl), terrain[ x ][ (y + 1) ]);
    }
    
    endShape();
  }
  
  //if(!animating) {
  //  noLoop();
  //}
  
  if(frameCount == 50) { save("preview.png"); }
}

void mouseClicked() {
  if(mouseButton == LEFT) {
    //loop();
  } else if(mouseButton == RIGHT) {
    animating = !animating;
    //loop();
  } else if(mouseButton == CENTER) {
    wireframe = !wireframe;
    //loop();
  }
}

void mouseWheel(MouseEvent event) {
  float d = event.getCount();
  
  if(d < 0) {
    xyoffstep += 0.01;
  } else if(d > 0) {
    xyoffstep -= 0.01;
  }
}