Porting over Ray-Tracing-2 to Intellij. Fixed processing core reference issues. still need to fix other issues though.

src/View.java

@@ -0,0 +1,165 @@
+import processing.core.*;
+import java.util.ArrayList;
+import java.util.Objects;
+
+import static processing.core.PApplet.*;
+
+public class View{
+    PVector pose;
+    float angle = 0;
+    float FOV;
+    ArrayList<Ray> rays = new ArrayList<Ray>();
+
+    //the x,y position of the view, what angle it's looking at and its FOV
+    View(PVector newPose, int numberOfRays, float FOV){
+        this.pose = newPose;
+        this.FOV = FOV;
+        this.setRayNum(numberOfRays, FOV, this.angle);
+    }
+
+    //sets the number of rays and their starting values in the ray list
+    public void setRayNum(int numberOfRays, float FOV, float angleOffset){
+        float rayStep = FOV/numberOfRays;
+        rays.clear();
+        float angle = (float) (0.01-angleOffset); //the 0.01 fixes some bugs
+        for(int i = 0; i < numberOfRays; i++){
+            Ray ray = new Ray(pose, 100000, angle);
+            angle = angle + rayStep;
+            rays.add(ray);
+        }
+    }
+
+    //sees if the ray will collide with the walls in the wall list
+    public void look(ArrayList<Wall> walls){
+        for (Ray ray : rays){
+            ray.castRay(walls);
+            ray.drawRay();
+        }
+    }
+
+    //changes the position of the view
+    public void setPos(PVector newPose){
+        pose = newPose;
+        for(Ray ray : rays){ray.setPos(pose);}
+    }
+
+    //changes the angle of the view
+    public void setAngle(float angle){
+        this.angle = angle;
+        this.setRayNum(rays.size(), this.FOV, angle);
+    }
+
+    //changes the field of view of the view
+    public void setFOV(float FOV){
+        this.FOV = FOV;
+        this.setRayNum(this.rays.size(), this.FOV, this.angle);
+    }
+
+    public PVector getPos(){return pose;}
+
+    public float getAngle(){return this.angle;}
+
+    public float getFOV(){return this.FOV;}
+
+    public int getRayNum(){return this.rays.size();}
+
+    //gets the point that each ray has collided with
+    public ArrayList<PVector> getPoints(){
+        ArrayList<PVector> points = new ArrayList<PVector>();
+
+        for(Ray ray : rays){
+            if(!Objects.equals(ray.getPoint(), new PVector(0, 0) {
+            })){
+                points.add(ray.getPoint());
+            }
+        }
+        return points;
+    }
+}
+
+class Ray{
+    PVector pose;
+    int rayLength;
+    int defaultRayLength;
+    float angle; // IN RADIANS
+
+    //takes the starting position of the ray, the length of the ray, and it's casting angle (radians)
+    Ray(PVector position, int defaultRayLength, float angle){
+        this.pose = position;
+        this.defaultRayLength = defaultRayLength;
+        this.rayLength = defaultRayLength;
+        this.angle = angle;
+    }
+
+    public void drawRay(){
+        line(pose.x, pose.y, (pose.x + cos(angle)*rayLength), (pose.y + sin(angle)*rayLength));
+    }
+
+    //checks to see at what coordinate the ray will collide with an object and sets the ray length to meet that point.
+    public void castRay(ArrayList<Wall> objects){
+        this.rayLength = defaultRayLength;
+        ArrayList<Integer> distances = new ArrayList<Integer>();
+        //sees what objects it collides with
+        for(Wall object : objects){
+            float theta1 = angle;
+            float theta2 = radians(object.getAngle());
+            PVector wallPos = object.getPos();
+
+            //finds where along the wall the ray collides
+            float b = (pose.x*sin(theta1) + wallPos.y*cos(theta1) - pose.y*cos(theta1) - wallPos.x*sin(theta1)) / (cos(theta2)*sin(theta1) - sin(theta2)*cos(theta1));
+
+            //if the place along the wall is further away than the wall extends, then it didn't collide
+            if(b < object.getLength() && b > 0){
+                //finds the length of the ray needed to collide with the wall
+                float a = (b*sin(theta2) + wallPos.y-pose.y) / sin(theta1);
+                //add that length to a list
+                if(a > 0){
+                    distances.add((int)abs(a));
+                }
+
+            }
+        }
+        //finds the shortest distance and sets the length of the ray to that distance
+        if(distances.size() > 0){
+            for(Integer distance : distances){
+                if(distance < rayLength){
+                    rayLength = distance;
+                }
+            }
+        }
+        else this.rayLength = defaultRayLength;
+    }
+
+    public PVector getPos(){ return pose;}
+
+    public int getRayLength(){return this.rayLength;}
+
+    public float getAngle(){return this.angle;}
+
+    public boolean hasCollided(){
+        if(this.defaultRayLength != this.rayLength){return true;}
+        else{return false;}
+    }
+
+    //returns the absolute position of the point
+    public PVector getPoint(){
+        if(this.rayLength != this.defaultRayLength){
+            return new PVector(rayLength * (int)cos(this.angle) + pose.x, rayLength * (int)sin(this.angle) + pose.y);
+        }
+        else{
+            return new PVector(0,0);
+        }
+    }
+
+    public void setPos(PVector newPose){
+        pose = newPose;
+    }
+
+    public void setRayLength(int rayLength){this.rayLength = rayLength;}
+
+    public void setDefaultRayLength(int defaultRayLength){this.defaultRayLength = defaultRayLength;}
+
+    public void setAngle(float angle){this.angle = angle;}
+
+}
+