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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class Graph : MonoBehaviour
{
[SerializeField]
Transform pointPrefab;
const int max_resolution = 100;
[SerializeField, Range(3, max_resolution)]
int resolution = 30;
int old_resolution = 30;
[SerializeField]
MathFunctionLibrary.FunctionEnum function;
MathFunctionLibrary.FunctionEnum old_function;
[SerializeField, Range(0.1f, 2.0f)]
float function_scale = 1.0f;
[SerializeField, Range(0f, 10f)]
float lerp_speed = 2.0f;
float lerp_timer = 0f;
bool lerping = false;
Transform[] points;
void SetResolution() {
float step = 2f / resolution;
for(int i = 0, x = 0, z = 0; i < (max_resolution * max_resolution); i++, x++) {
Transform point = points[i];
if(i >= (resolution * resolution))
{
point.gameObject.SetActive(false);
}
else
{
point.gameObject.SetActive(true);
if(x == resolution)
{
x = 0;
z += 1;
}
Vector3 position = pointPrefab.localPosition;
position.x = (x + 0.5f) * step - 1f;
position.z = (z + 0.5f) * step - 1f;
point.localPosition = position;
point.localScale = new Vector3(step, step, step);
}
}
}
void Awake() {
points = new Transform[max_resolution * max_resolution];
float step = 2f / resolution;
for(int i = 0, x = 0, z = 0; i < (max_resolution * max_resolution); i++, x++) {
Transform point = Instantiate(pointPrefab);
points[i] = point;
if(i >= (resolution * resolution))
{
point.gameObject.SetActive(false);
}
if(x == resolution)
{
x = 0;
z += 1;
}
Vector3 position = pointPrefab.localPosition;
point.SetParent(transform, false);
position.x = (x + 0.5f) * step - 1f;
position.z = (z + 0.5f) * step - 1f;
point.localPosition = position;
point.localScale = new Vector3(step, step, step);
}
}
// Start is called before the first frame update
void Start()
{
}
// Update is called once per frame
void Update()
{
float time = Time.time;
if(old_resolution != resolution) {
old_resolution = resolution;
SetResolution();
}
if(function != old_function)
{
if(lerp_timer <= 0f)
{
if(lerping)
{
lerping = false;
old_function = function;
}
else
{
lerping = true;
lerp_timer = lerp_speed;
}
}
else
{
lerp_timer -= Time.deltaTime;
}
}
MathFunctionLibrary.Function visual_function = MathFunctionLibrary.GetFunction(function);
MathFunctionLibrary.Function previous_function = MathFunctionLibrary.GetFunction(old_function);
for(int i = 0; i < resolution * resolution; i++) {
Transform point = points[i];
Vector3 position = point.localPosition;
if(function == old_function)
{
position.y = visual_function(
position.x * function_scale,
position.z * function_scale,
time
);
}
else
{
var starting = previous_function(
position.x * function_scale,
position.z * function_scale,
time
);
var target = visual_function(
position.x * function_scale,
position.z * function_scale,
time
);
position.y = Mathf.Lerp(target, starting, lerp_timer / lerp_speed);
}
point.localPosition = position;
}
}
}
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