This change makes the code in graphics.c more descriptive and readable.
Especially, it makes expressions for scale calculation look what they
are meant to do. It also includes:
- Rename variables (struct fraction, dim_org, etc.) for more consistency
- Add more input validation (div-by-zero, etc.)
BUG=chromium:502066
BRANCH=master
TEST=Tested on Samus
CQ-DEPEND=CL:304860
Change-Id: I2694912bb7b6017d5655de2fd655b95432addb22
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Original-Commit-Id: 0863dc3ee925d3a05c83c66397b19a57f5478ef3
Original-Change-Id: Id8e349b8e09082fb84c3e1a984617f916e16c518
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/304861
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/11928
Tested-by: build bot (Jenkins)
9aed1465d7