private void Update()
{
// Pencil/eraser switching
if (Input.GetKeyDown(KeyCode.P))
{
SetEraserEnabled(false);
}
if (Input.GetKeyDown(KeyCode.E))
{
SetEraserEnabled(true);
}
if (canDraw)
{
// Need to keep track of dragging to make sure lerping isn't done between penup/pendown
if (Input.GetMouseButtonUp(0))
{
isDragging = false;
}
if (Input.GetMouseButton(0))
{
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
RaycastHit hit;
if (Physics.Raycast(ray, out hit))
{
var pallet = hit.collider.GetComponent <PaintCanvas>();
if (pallet != null)
{
// Check to make sure the canvas was clicked
Renderer rend = hit.transform.GetComponent <Renderer>();
MeshCollider meshCollider = hit.collider as MeshCollider;
if (rend == null || rend.sharedMaterial == null || rend.sharedMaterial.mainTexture == null || meshCollider == null)
{
return;
}
Texture2D tex = rend.material.mainTexture as Texture2D;
Vector2 pixelUV = hit.textureCoord;
pixelUV.x *= tex.width;
pixelUV.y *= tex.height;
Color currColor = new Color(0, 0, 0, 0);
if (!eraserEnabled)
{
currColor = GameObject.FindObjectOfType <ColorPicker>().currColor;
}
int currSize = GameObject.FindObjectOfType <BrushPicker>().brushSize;
if (!isDragging)
{
prevPos = pixelUV;
}
else
{
paintCanvas.ColorBetween(prevPos, pixelUV, currColor, currSize);
}
paintCanvas.BrushAreaWithColor(pixelUV, currColor, currSize);
prevPos = pixelUV;
isDragging = true;
}
}
}
}
}
