ridge-deposit tool

The ridge-deposit tool is used for creating areas of ridged terrain. It fills in lower areas of the line that you specify, as if water or wind were dropping bits of dirt.

Properties:

deposit-percent	The increment percentage that the deposit covers. e.g. The line starts at a point, and then increments by this value to find the next point on the line. This value should be between 0.001 and 1. The larger the value, the more staggered the ridges will be, the smaller the closer. This value is identical to the erosion-percent value on the ridge-erode tool.
deposit-depth	This value controls how much material is deposited. The more material you deposit, the faster the ridge will grow.
deposit-width	The feather width of the tool. Points in a radius of "deposit-width" around the current point will be affected by the tool with a falloff inversely proportionate to their distance from the origin. (In other words, points around the point we're currently working on are affected less the farther they are away.)
deposit-length	This property controls how far ridges will be deposited. The value must be greater than or equal to 0.1, and the effect spreads out in increments of 0.1 by finding the lowest point neighboring the current point. That means that a length of 0.5 will fill in 5 points with the "deposit-depth" value, and all the neighboring points in a radious of "deposit-width" as explained above. deposit-width increases by 0.1 for the length of the run. (e.g. if deposit-width is 1.0 at the begginning of a run, and the "deposit-length" is 0.5, then the width will be 1.5 at the end of the run. The width is reset at the begginning of each run down the length of the line.)
start-x	Starting x coordinate.
start-y	Starting y coordinate.
end-x	Ending x corrdinate.
end-y	Ending y coordinate.

ridge-deposit acts down a line. This illustration may help explain better:

 

As you can see, ridge-deposit moves down a line specified by start_x,start_y to end_x,end_y. While runs always start precisely on the line, they do not move in a linear fashion. Rather, they follow the natural contours of the land. While this drawing does not perfectly explain the effects, it helps somewhat. Below is an example of the effects of ridge-deposit.

 

As you can see, it precisely follows a line, but its effects are not linear, and may branch off into various paths. The more uneven the terrain to begin with, the less artificially straight are the effects. It is reccommended that you use ridge-deposit and ridge-erode in concert with fractal-builder (the fractal landscape generator.)

 

Notes:

1. Good settings for building line-ish ridges are: