initial commit

draw.h

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+/*
+ * This file is part of the loccorr project.
+ * Copyright 2021 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#ifndef DRAW_H__
+#define DRAW_H__
+
+#include <stdint.h>
+
+// 3-channel image for saving into jpg/png
+typedef struct{
+    uint8_t *data;  // image data
+    int w;          // width
+    int h;          // height
+} Img3;
+
+/*
+// box (coordinates from upper left corner)
+typedef struct{
+    int xul;    // coordinates of upper left box corner
+    int yul;
+    int w;      // width and height
+    int h;
+    uint8_t pattern[3]; // pattern for figure filling
+} BBox;
+*/
+
+// opaque pattern for drawing
+typedef struct{
+    uint8_t *data;
+    int w;
+    int h;
+} Pattern;
+
+// base colors
+extern const uint8_t C_R[], C_G[], C_B[], C_K[], C_W[];
+
+void Pattern_free(Pattern **p);
+void Pattern_draw3(Img3 *img, Pattern *p, int xc, int yc, const uint8_t colr[]);
+Pattern *Pattern_cross(int h, int w);
+
+#endif // DRAW_H__