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Diffstat (limited to 'pugl_test.c')
| -rw-r--r-- | pugl_test.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/pugl_test.c b/pugl_test.c new file mode 100644 index 0000000..b0ea04d --- /dev/null +++ b/pugl_test.c @@ -0,0 +1,261 @@ +/* + Copyright 2012-2016 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. +*/ + +/** + @file pugl_test.c A simple Pugl test that creates a top-level window. +*/ + +#include <locale.h> +#include <math.h> +#include <stdio.h> +#include <string.h> + +#include "pugl/gl.h" +#include "pugl/pugl.h" + +static int quit = 0; +static float xAngle = 0.0f; +static float yAngle = 0.0f; +static float dist = 10.0f; + +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 = tan(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 void +onReshape(PuglView* view, int width, int height) +{ + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glViewport(0, 0, width, height); + + float projection[16]; + perspective(projection, 1.8f, width / (float)height, 1.0, 100.0f); + glLoadMatrixf(projection); +} + +static void +onDisplay(PuglView* view) +{ + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(0.0f, 0.0f, dist * -1); + glRotatef(xAngle, 0.0f, 1.0f, 0.0f); + glRotatef(yAngle, 1.0f, 0.0f, 0.0f); + + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + glEnableClientState(GL_VERTEX_ARRAY); + glEnableClientState(GL_COLOR_ARRAY); + + glVertexPointer(3, GL_FLOAT, 0, cubeVertices); + glColorPointer(3, GL_FLOAT, 0, cubeVertices); + glDrawArrays(GL_TRIANGLES, 0, 12 * 3); + + glDisableClientState(GL_VERTEX_ARRAY); + glDisableClientState(GL_COLOR_ARRAY); +} + +static void +printModifiers(PuglView* view, unsigned mods) +{ + 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 void +onEvent(PuglView* view, const PuglEvent* event) +{ + switch (event->type) { + case PUGL_NOTHING: + break; + case PUGL_CONFIGURE: + onReshape(view, event->configure.width, event->configure.height); + break; + case PUGL_EXPOSE: + onDisplay(view); + break; + case PUGL_CLOSE: + quit = 1; + break; + case PUGL_KEY_PRESS: + fprintf(stderr, "Key %u (char U+%04X special U+%04X) press (%s)%s\n", + event->key.keycode, event->key.character, event->key.special, + event->key.utf8, event->key.filter ? " (filtered)" : ""); + if (event->key.character == 'q' || + event->key.character == 'Q' || + event->key.character == PUGL_CHAR_ESCAPE) { + quit = 1; + } + break; + case PUGL_KEY_RELEASE: + fprintf(stderr, "Key %u (char U+%04X special U+%04X) release (%s)%s\n", + event->key.keycode, event->key.character, event->key.special, + event->key.utf8, event->key.filter ? " (filtered)" : ""); + break; + case PUGL_MOTION_NOTIFY: + xAngle = -(int)event->motion.x % 360; + yAngle = (int)event->motion.y % 360; + puglPostRedisplay(view); + break; + case PUGL_BUTTON_PRESS: + case PUGL_BUTTON_RELEASE: + fprintf(stderr, "Mouse %d %s at %f,%f ", + event->button.button, + (event->type == PUGL_BUTTON_PRESS) ? "down" : "up", + event->button.x, + event->button.y); + printModifiers(view, event->scroll.state); + break; + case PUGL_SCROLL: + fprintf(stderr, "Scroll %f %f %f %f ", + event->scroll.x, event->scroll.y, event->scroll.dx, event->scroll.dy); + printModifiers(view, event->scroll.state); + dist += event->scroll.dy; + if (dist < 10.0f) { + dist = 10.0f; + } + puglPostRedisplay(view); + break; + case PUGL_ENTER_NOTIFY: + fprintf(stderr, "Entered\n"); + break; + case PUGL_LEAVE_NOTIFY: + fprintf(stderr, "Exited\n"); + break; + case PUGL_FOCUS_IN: + fprintf(stderr, "Focus in\n"); + break; + case PUGL_FOCUS_OUT: + fprintf(stderr, "Focus out\n"); + break; + } +} + +int +main(int argc, char** argv) +{ + bool ignoreKeyRepeat = false; + bool resizable = false; + for (int i = 1; i < argc; ++i) { + if (!strcmp(argv[i], "-h")) { + printf("USAGE: %s [OPTIONS]...\n\n" + " -h Display this help\n" + " -i Ignore key repeat\n" + " -r Resizable window\n", argv[0]); + return 0; + } else if (!strcmp(argv[i], "-i")) { + ignoreKeyRepeat = true; + } else if (!strcmp(argv[i], "-r")) { + resizable = true; + } else { + fprintf(stderr, "Unknown option: %s\n", argv[i]); + } + } + + setlocale(LC_CTYPE, ""); + + PuglView* view = puglInit(NULL, NULL); + puglInitWindowClass(view, "PuglTest"); + puglInitWindowSize(view, 512, 512); + puglInitWindowMinSize(view, 256, 256); + puglInitResizable(view, resizable); + + puglIgnoreKeyRepeat(view, ignoreKeyRepeat); + puglSetEventFunc(view, onEvent); + + puglCreateWindow(view, "Pugl Test"); + + puglEnterContext(view); + glEnable(GL_DEPTH_TEST); + glDepthFunc(GL_LESS); + glClearColor(0.2f, 0.2f, 0.2f, 1.0f); + puglLeaveContext(view, false); + + puglShowWindow(view); + + while (!quit) { + puglWaitForEvent(view); + puglProcessEvents(view); + } + + puglDestroy(view); + return 0; +} |