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Master Spline:<\/strong><\/p>\n For this I first had to write a cosh(x) function, because Unity doesn’t have one. That was easy thanks to Wikipedia and the almighty exponential function. Then I took the distance between the two objects and divided it into discrete steps and calculated the cosh for each of these steps. This I used to calculate positions that follow the cosh function between the two objects, no matter how I place them in XYZ space. The influence of gravity and number of steps can be easily controlled via public variables.<\/p>\n <\/p>\n Sub-Spline:<\/strong> Now I have to read into creating meshes in code. Hopefully I will be able to finish this soon.<\/p>\n But first an image showing how the wires look like currently (for this I calculated many steps and drew a sphere gizmo for each of the points).<\/p>\n\r\nusing UnityEngine;\r\nusing System.Collections;\r\n\r\n[ExecuteInEditMode]\r\npublic class Spliner : MonoBehaviour {\r\n\r\n public GameObject next;\r\n public float gravity;\r\n public int steps;\r\n\r\n private Vector3 nextPosition;\r\n private Vector3[] pointArr;\r\n\r\n void Update() {\r\n\r\n if(steps < 0) steps= 0;\r\n pointArr = new Vector3[steps];\r\n\r\n if(next) nextPosition = next.transform.position;\r\n\r\n for(int i = 0; i < steps; i++) {\r\n pointArr[i] = Midpoint(i);\r\n }\r\n }\r\n\r\n Vector3 Midpoint(int i) {\r\n Vector3 direction = nextPosition - transform.position;\r\n\r\n return transform.position + direction\/steps * i + new Vector3(0, gravity * ((CosH((1.0f * i \/ steps) - 0.5f) - CosH(0.5f))), 0);\r\n }\r\n\r\n float CosH(float t) {\r\n return (Mathf.Exp(t) + Mathf.Exp(-t))\/2;\r\n }\r\n\r\n void OnDrawGizmos() {\r\n foreach(Vector3 temp in pointArr) {\r\n Gizmos.DrawSphere(temp, 0.1f);\r\n }\r\n }\r\n}\r\n<\/pre>\n
\nThis was a bit more difficult. I used the points calculated for the Master Spline and calculated a cosine-sine spiral around them to make the sub-Splines curl around the Master Spline. I also added some randomness to frequency, amplitude and start-point of the sin\/cos functions for each sub-Spline.<\/p>\n\r\nusing UnityEngine;\r\nusing System.Collections;\r\n\r\n[ExecuteInEditMode]\r\npublic class Spliner : MonoBehaviour {\r\n\r\n public GameObject next;\r\n public float gravity;\r\n public int sides;\r\n public int steps;\r\n\r\n public int subSplines;\r\n public float frequency;\r\n public float amplitude;\r\n\r\n private Vector3 curPosition;\r\n private Vector3 nextPosition;\r\n private Vector3[] mainPointArr = new Vector3[0];\r\n\r\n private Vector3[,] subPointArr = new Vector3[0,0];\r\n\r\n void Update() {\r\n if(next) {\r\n nextPosition = next.transform.position - 2.8f * next.transform.forward; \/\/the offset here and in the next line are optional, they are important for my current project only\r\n curPosition = transform.position - 2.8f * transform.forward;\r\n\r\n if(sides < 3) sides = 3;\r\n\r\n if(steps < 1) steps= 1;\r\n\r\n mainPointArr = new Vector3[steps + 1];\r\n\r\n for(int i = 0; i <= steps; i++) {\r\n mainPointArr[i] = DrawCosH(i);\r\n }\r\n\r\n if(subSplines < 1) subSplines = 1;\r\n\r\n subPointArr = new Vector3[subSplines, steps];\r\n\r\n for(int i = 0; i < subSplines; i++) {\r\n DrawSubSpline(i);\r\n }\r\n }\r\n }\r\n\r\n \/\/create master spline\r\n Vector3 DrawCosH(int i) {\r\n Vector3 direction = nextPosition - curPosition;\r\n\r\n return curPosition + direction\/steps * i + new Vector3(0, gravity * (CosH((1.0f * i \/ steps) - 0.5f) - CosH(0.5f)), 0) - Vector3.up; \/\/this last Vector3.up is optional, like the offset at the top\r\n }\r\n\r\n \/\/calculate cosh\r\n float CosH(float t) {\r\n return (Mathf.Exp(t) + Mathf.Exp(-t))\/2;\r\n }\r\n\r\n \/\/create sub splines\r\n void DrawSubSpline(int i) {\r\n float locAmp = amplitude * Random.Range(0.5f, 1.2f) \/ 10;\r\n float locFreq = frequency * Random.Range(0.8f, 1.2f);\r\n float offset = Random.Range(0.0f, 1.0f);\r\n int cw = (Random.Range(0.0f, 1.0f) > 0.5 ? -1 : 1);\r\n\r\n for(int j = 0; j < steps; j++) {\r\n Vector3 direction = mainPointArr[j + 1] - mainPointArr[j];\r\n Quaternion rot = Quaternion.LookRotation(direction);\r\n\r\n subPointArr[i, j] = mainPointArr[j] + rot * (Vector3.up * Mathf.Sin(1.0f * j * locFreq \/ steps + offset) + Vector3.right * cw * Mathf.Cos(1.0f * j * locFreq \/ steps + offset)) * locAmp;\r\n }\r\n }\r\n\r\n \/\/draw Gizmos for visualization in the Editor\r\n void OnDrawGizmos() {\r\n if(next) {\r\n Gizmos.color = Color.yellow;\r\n \/\/foreach(Vector3 temp in mainPointArr) {\r\n \/\/ Gizmos.DrawSphere(temp, 0.1f);\r\n \/\/}\r\n\r\n if(subSplines > 0) {\r\n Gizmos.color = Color.red;\r\n foreach(Vector3 temp in subPointArr) {\r\n Gizmos.DrawSphere(temp, 0.05f);\r\n }\r\n }\r\n }\r\n }\r\n}\r\n<\/pre>\n
![\"\"](\"http:\/\/piflik.de\/wp-content\/uploads\/2013\/01\/BlobScreen06.jpg\" "\\"BlobScreen06\\"")
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