58 lines
2.1 KiB
C#
58 lines
2.1 KiB
C#
using UnityEngine;
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using System.Collections;
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public class GameWindow : MonoBehaviour
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{
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public int viewPortWidth = 80;
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public int viewPortHeight = 25;
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public float verticalShift;
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public float viewDistance = 5;
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float n, f, r, l, t, b;
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Matrix4x4 mat = new Matrix4x4();
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// Use this for initialization
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void Start()
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{
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}
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// Update is called once per frame
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void Update()
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{
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float screenAspect = (float)Screen.width / (float)Screen.height;
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float viewportAspect = (float)viewPortWidth / (float)viewPortHeight;
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float fraction = screenAspect / viewportAspect;
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float height = (viewPortHeight / 2.0f) / Mathf.Sin((camera.fieldOfView / 2) * Mathf.Deg2Rad);
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transform.localPosition = new Vector3(0, height, -verticalShift);
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camera.nearClipPlane = height - 1.0001f;
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camera.farClipPlane = height + viewDistance;
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RenderSettings.fogStartDistance = camera.nearClipPlane;
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RenderSettings.fogEndDistance = camera.farClipPlane;
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if (fraction > 1.0f) //If the screen is wider than the DF Viewport
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{
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camera.rect = new Rect(0.5f - ((1.0f / fraction) / 2.0f), 0.0f, 1.0f / fraction, 1.0f);
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}
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else //If the DF Viewport is wider.
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{
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camera.rect = new Rect(0.0f, 0.5f - (fraction / 2.0f), 1.0f, fraction);
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}
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//make a custom camera matrix, rather than use the inbuilt one.
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n = camera.nearClipPlane;
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f = camera.farClipPlane;
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r = viewPortWidth / 2.0f;
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l = -viewPortWidth / 2.0f;
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t = verticalShift + (viewPortHeight / 2.0f);
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b = verticalShift - (viewPortHeight / 2.0f);
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mat[0, 0] = 2 * n / (r - l); mat[1, 0] = 0; mat[2, 0] = 0; mat[3, 0] = 0;
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mat[0, 1] = 0; mat[1, 1] = 2 * n / (t - b); mat[2, 1] = 0; mat[3, 1] = 0;
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mat[0, 2] = (r + l) / (r - l); mat[1, 2] = (t + b) / (t - b); mat[2, 2] = -(f + n) / (f - n); mat[3, 2] = -1;
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mat[0, 3] = 0; mat[1, 3] = 0; mat[2, 3] = -2 * f * n / (f - n); ; mat[3, 3] = 0;
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camera.projectionMatrix = mat;
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}
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}
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