cameraZ

src/progressed/graphics/draw3d/Lines3D.java

@@ -67,12 +67,16 @@ public static int linePointCounts(float x1, float y1, float z1, float x2, float
     }
 
     public static float[] linePoints(float x1, float y1, float z1, float x2, float y2, float z2, int pointCount){
+        if(z1 > z2){ //Always return from bottom to top
+            return linePoints(x2, y2, z2, x1, y1, z1, pointCount);
+        }
+
         float[] points = new float[pointCount * 3];
         float px = (x2 - x1) / (pointCount - 1);
         float py = (y2 - y1) / (pointCount - 1);
         float pz = (z2 - z1) / (pointCount - 1);
 
-        for(int i = 0; i < pointCount; i++){
+        for(int i = 0; i < pointCount; i++){ //TODO check if goes above viewport z. If so, limit to viewport and cut short.
             points[i * 3] = x1 + px * i;
             points[i * 3 + 1] = y1 + py * i;
             points[i * 3 + 2] = z1 + pz * i;

src/progressed/graphics/draw3d/Perspective.java

@@ -15,7 +15,7 @@ public class Perspective{
 
     /** @return If the z coordinate is below the viewport height. */
     public static boolean canDraw(float z){
-        return z < cameraHeight() - viewportOffset;
+        return z < cameraZ() - viewportOffset;
     }
 
     /** @return Perspective projected coordinates to draw at. */
@@ -24,7 +24,7 @@ public static Vec2 drawPos(float x, float y, float z){
         Vec2 v = viewportSize();
         float vw = v.x, vh = v.y;
         float cx = camera.position.x, cy = camera.position.y;
-        float cz = cameraHeight();
+        float cz = cameraZ();
 
         x -= cx;
         y -= cy;
@@ -40,7 +40,7 @@ public static Vec2 drawPos(float x, float y, float z){
     /** Multiplicative size scale at a point. */
     public static float scale(float x, float y, float z){
         float cx = camera.position.x, cy = camera.position.y;
-        float cz = cameraHeight();
+        float cz = cameraZ();
 
         x -= cx;
         y -= cy;
@@ -58,7 +58,7 @@ public static float scale(float x, float y, float z){
     /** Fade out based on distance to viewport. */
     public static float alpha(float x, float y, float z){
         float cx = camera.position.x, cy = camera.position.y;
-        float cz = cameraHeight();
+        float cz = cameraZ();
 
         float d1 = Math3D.dst(x, y, z, cx, cy, cz); //Distance between camera point
 
@@ -84,7 +84,7 @@ public static float alpha(float x, float y, float z){
     }
 
     /** Calculates the camera height based on FOV and the size of the vanilla camera. */
-    public static float cameraHeight(){
+    public static float cameraZ(){
         float width = Math.max(camera.width, camera.height) / 2f;
         //TOA
         return (float)(width / Math.tan(fov / 2f * Mathf.degRad));