Test: Move some generic code to a separate header

1 files changed, 145 insertions, 0 deletions

diff --git a/test/test_utils.h b/test/test_utils.h
new file mode 100644
index 0000000..d92d53c
--- /dev/null
+++ b/test/test_utils.h
@@ -0,0 +1,145 @@
+/*
+  Copyright 2012-2019 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include "pugl/pugl.h"
+
+#include <math.h>
+#include <stdint.h>
+#include <stdio.h>
+
+static const float cubeVertices[] = {
+	-1.0f, -1.0f, -1.0f,
+	-1.0f, -1.0f,  1.0f,
+	-1.0f,  1.0f,  1.0f,
+
+	 1.0f,  1.0f, -1.0f,
+	-1.0f, -1.0f, -1.0f,
+	-1.0f,  1.0f, -1.0f,
+
+	 1.0f, -1.0f,  1.0f,
+	-1.0f, -1.0f, -1.0f,
+	 1.0f, -1.0f, -1.0f,
+
+	 1.0f,  1.0f, -1.0f,
+	 1.0f, -1.0f, -1.0f,
+	-1.0f, -1.0f, -1.0f,
+
+	-1.0f, -1.0f, -1.0f,
+	-1.0f,  1.0f,  1.0f,
+	-1.0f,  1.0f, -1.0f,
+
+	 1.0f, -1.0f,  1.0f,
+	-1.0f, -1.0f,  1.0f,
+	-1.0f, -1.0f, -1.0f,
+
+	-1.0f,  1.0f,  1.0f,
+	-1.0f, -1.0f,  1.0f,
+	 1.0f, -1.0f,  1.0f,
+
+	 1.0f,  1.0f,  1.0f,
+	 1.0f, -1.0f, -1.0f,
+	 1.0f,  1.0f, -1.0f,
+
+	 1.0f, -1.0f, -1.0f,
+	 1.0f,  1.0f,  1.0f,
+	 1.0f, -1.0f,  1.0f,
+
+	 1.0f,  1.0f,  1.0f,
+	 1.0f,  1.0f, -1.0f,
+	-1.0f,  1.0f, -1.0f,
+
+	 1.0f,  1.0f,  1.0f,
+	-1.0f,  1.0f, -1.0f,
+	-1.0f,  1.0f,  1.0f,
+
+	 1.0f,  1.0f,  1.0f,
+	-1.0f,  1.0f,  1.0f,
+	 1.0f, -1.0f,  1.0f
+};
+
+/** Calculate a projection matrix for a given perspective. */
+static void
+perspective(float* m, float fov, float aspect, float zNear, float zFar)
+{
+	const float h     = tanf(fov);
+	const float w     = h / aspect;
+	const float depth = zNear - zFar;
+	const float q     = (zFar + zNear) / depth;
+	const float qn    = 2 * zFar * zNear / depth;
+
+	m[0]  = w;  m[1]  = 0;  m[2]  = 0;   m[3]  = 0;
+	m[4]  = 0;  m[5]  = h;  m[6]  = 0;   m[7]  = 0;
+	m[8]  = 0;  m[9]  = 0;  m[10] = q;   m[11] = -1;
+	m[12] = 0;  m[13] = 0;  m[14] = qn;  m[15] = 0;
+}
+
+static int
+printModifiers(const uint32_t mods)
+{
+	return fprintf(stderr, "Modifiers:%s%s%s%s\n",
+	               (mods & PUGL_MOD_SHIFT) ? " Shift"   : "",
+	               (mods & PUGL_MOD_CTRL)  ? " Ctrl"    : "",
+	               (mods & PUGL_MOD_ALT)   ? " Alt"     : "",
+	               (mods & PUGL_MOD_SUPER) ? " Super" : "");
+}
+
+static int
+printEvent(const PuglEvent* event, const char* prefix)
+{
+	switch (event->type) {
+	case PUGL_KEY_PRESS:
+		return fprintf(stderr, "%sKey %u (char U+%04X special U+%04X) press (%s)%s\n",
+		               prefix,
+		               event->key.keycode, event->key.character, event->key.special,
+		               event->key.utf8, event->key.filter ? " (filtered)" : "");
+
+	case PUGL_KEY_RELEASE:
+		return fprintf(stderr, "%sKey %u (char U+%04X special U+%04X) release (%s)%s\n",
+		               prefix,
+		               event->key.keycode, event->key.character, event->key.special,
+		               event->key.utf8, event->key.filter ? " (filtered)" : "");
+	case PUGL_BUTTON_PRESS:
+	case PUGL_BUTTON_RELEASE:
+		return (fprintf(stderr, "%sMouse %d %s at %f,%f ",
+		                prefix,
+		                event->button.button,
+		                (event->type == PUGL_BUTTON_PRESS) ? "down" : "up",
+		                event->button.x,
+		                event->button.y) +
+		        printModifiers(event->scroll.state));
+	case PUGL_SCROLL:
+		return (fprintf(stderr, "%sScroll %f %f %f %f ",
+		                prefix,
+		                event->scroll.x, event->scroll.y,
+		                event->scroll.dx, event->scroll.dy) +
+		        printModifiers(event->scroll.state));
+	case PUGL_ENTER_NOTIFY:
+		return fprintf(stderr, "%sMouse enter at %f,%f\n",
+		               prefix, event->crossing.x, event->crossing.y);
+	case PUGL_LEAVE_NOTIFY:
+		return fprintf(stderr, "%sMouse leave at %f,%f\n",
+		               prefix, event->crossing.x, event->crossing.y);
+	case PUGL_FOCUS_IN:
+		return fprintf(stderr, "%sFocus in%s\n",
+		               prefix, event->focus.grab ? " (grab)" : "");
+	case PUGL_FOCUS_OUT:
+		return fprintf(stderr, "%sFocus out%s\n",
+		               prefix, event->focus.grab ? " (ungrab)" : "");
+	default: break;
+	}
+
+	return 0;
+}