/* Copyright 2012-2016 David Robillard 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 #include #include #include #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) { int mods = puglGetModifiers(view); 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) { if (event->type == PUGL_KEY_PRESS) { const uint32_t ucode = event->key.character; fprintf(stderr, "Key %u (char %u) down (%s)%s\n", event->key.keycode, ucode, event->key.utf8, event->key.filter ? " (filtered)" : ""); if (ucode == 'q' || ucode == 'Q' || ucode == PUGL_CHAR_ESCAPE) { quit = 1; } } } static void onSpecial(PuglView* view, bool press, PuglKey key) { fprintf(stderr, "Special key %d %s ", key, press ? "down" : "up"); printModifiers(view); } static void onMotion(PuglView* view, int x, int y) { xAngle = x % 360; yAngle = y % 360; puglPostRedisplay(view); } static void onMouse(PuglView* view, int button, bool press, int x, int y) { fprintf(stderr, "Mouse %d %s at %d,%d ", button, press ? "down" : "up", x, y); printModifiers(view); } static void onScroll(PuglView* view, int x, int y, float dx, float dy) { fprintf(stderr, "Scroll %d %d %f %f ", x, y, dx, dy); printModifiers(view); dist += dy / 4.0f; if (dist < 10.0f) { dist = 10.0f; } puglPostRedisplay(view); } static void onClose(PuglView* view) { quit = 1; } 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); puglSetMotionFunc(view, onMotion); puglSetMouseFunc(view, onMouse); puglSetScrollFunc(view, onScroll); puglSetSpecialFunc(view, onSpecial); puglSetDisplayFunc(view, onDisplay); puglSetReshapeFunc(view, onReshape); puglSetCloseFunc(view, onClose); puglCreateWindow(view, "Pugl Test"); puglEnterContext(view); glEnable(GL_MULTISAMPLE); 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; }