8.3.5 Zooming (Pure C)

These functions control the overall zooming of the picture or the sub-picture. Normally you can use these variables and functions for removing “white” spaces around a plot.

C function: void mgl_set_plotfactor (HMGL gr, float val)

Sets the factor of plot size. It is not recommended to set it lower then 1.6. This is some anlogue of function Zoom() but applied not to overall image but for each InPlot. Use negative value to enable automatic PlotFactor selection.

C function: void mgl_set_zoom (HMGL gr, float x1, float y1, float x2, float y2)

Changes the scale of graphics that correspond to zoom in/out of the picture. After function call the current plot will be cleared and further the picture will contain plotting from its part [x1,x2]*[y1,y2]. Here picture coordinates x1, x2, y1, y2 changes from 0 to 1. Use Zoom(0,0,1,1) to return default view.