chprim_setkeyslope

int  chprim_setkeyslope(int geohandle, int prim, float time, float slope)

int  chprim_setkeyslope(int geohandle, int prim, float time, float slope, int half)

This function sets the slope of an existing channel primitive key.

geohandle

Handle to the geometry to write to. geoself() can be used to get a handle to the current geometry.

prim

The primitive number of the channel primitive to be modified.

time

The time in seconds of the key to modify.

slope

The new slope to apply to the key.

half

Which half of the key to set, one of CHPRIM_KEY_IN, CHPRIM_KEY_OUT, or CHPRIM_KEY_INOUT. Defaults to CHPRIM_KEY_INOUT. These values are defined in the chprim_utils.h header. Note that setting this to anything other than CHPRIM_KEY_INOUT will create a discontinuity in the slope at the key.