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- /*
- * buffhelp.h
- *
- * Copyright 2011 Thomas Buck <xythobuz@me.com>
- * Copyright 2011 Max Nuding <max.nuding@gmail.com>
- * Copyright 2011 Felix Bäder <baeder.felix@gmail.com>
- *
- * This file is part of LED-Cube.
- *
- * LED-Cube is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * LED-Cube is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with LED-Cube. If not, see <http://www.gnu.org/licenses/>.
- */
- #include <avr/io.h>
- #include <stdint.h>
- #include <stdlib.h>
- #include <serial.h>
- #include <strings.h>
-
- uint8_t *buffNew(void) {
- uint8_t *tmp = (uint8_t *)malloc(64);
- if (tmp == NULL) {
- #ifdef DEBUG
- serialWriteString(getString(24));
- #endif
- while(1); // Ran out of heap => Watchdog Reset
- }
- return tmp;
- }
-
- void buffSetPixel(uint8_t *buffer, uint8_t x, uint8_t y, uint8_t z) {
- buffer[(8 * z) + (7 - y)] |= (1 << x);
- }
-
- void buffClearPixel(uint8_t *buffer, uint8_t x, uint8_t y, uint8_t z) {
- buffer[(8 * z) + (7 - y)] &= ~(1 << x);
- }
-
- void buffFillRect(uint8_t *buffer, uint8_t x1, uint8_t y1, uint8_t z1,
- uint8_t x2, uint8_t y2, uint8_t z2, uint8_t value) {
- uint8_t depth, depthMax, depthMin, x, xMax, xMin, y, yMax, yMin;
-
- if (z1 <= z2) {
- depthMin = z1;
- depthMax = z2;
- } else {
- depthMin = z2;
- depthMax = z1;
- }
- if (x1 <= x2) {
- xMin = x1;
- xMax = x2;
- } else {
- xMin = x2;
- xMax = x1;
- }
- if (y1 <= y2) {
- yMin = y1;
- yMax = y2;
- } else {
- yMin = y2;
- yMax = y1;
- }
- for (depth = depthMin; depth <= depthMax; depth++) {
- // now draw a 2d rectangle, z = depth
- for (x = xMin; x <= xMax; x++) {
- for (y = yMin; y <= yMax; y++) {
- if (value) {
- buffSetPixel(buffer, x, y, depth);
- } else {
- buffClearPixel(buffer, x, y, depth);
- }
- }
- }
- }
- }
-
- void buffFree(uint8_t *buffer) {
- free(buffer);
- }
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