mirror of
https://gitea.nishi.boats/pyrite-dev/milsko
synced 2025-12-31 06:30:52 +00:00
24e7ea5430
git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@308 b9cfdab3-6d41-4d17-bbe4-086880011989
124 lines
2.8 KiB
C
124 lines
2.8 KiB
C
/* $Id$ */
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#include <Mw/Milsko.h>
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#include <Mw/Widget/OpenGL.h>
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#include <stdlib.h>
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MwWidget opengl;
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typedef struct triangle {
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int points[3 * 2];
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double r;
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double g;
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double b;
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} triangle_t;
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triangle_t* t = NULL;
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int ct = 0;
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int click = 0;
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int mx, my;
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static void tick(MwWidget handle, void* user, void* call) {
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int i;
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int w = MwGetInteger(opengl, MwNwidth);
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int h = MwGetInteger(opengl, MwNheight);
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MwOpenGLMakeCurrent(opengl);
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glClear(GL_COLOR_BUFFER_BIT);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(0, w, h, 0, -1, 1);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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for(i = 0; i < ct + (click == 2 ? 1 : 0); i++) {
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int j;
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glBegin(GL_TRIANGLES);
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glColor3d(t[i].r, t[i].g, t[i].b);
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for(j = 0; j < 3; j++) {
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glVertex2d(t[i].points[j * 2 + 0], t[i].points[j * 2 + 1]);
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}
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glEnd();
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}
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MwOpenGLSwapBuffer(opengl);
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}
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static void mouse(MwWidget handle, void* user, void* call) {
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MwLLMouse* mouse = call;
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if(mouse->button == MwLLMouseLeft) {
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t[ct].points[click * 2 + 0] = mouse->point.x;
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t[ct].points[click * 2 + 1] = mouse->point.y;
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click++;
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if(click == 1) {
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t[ct].r = rand() % 65536;
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t[ct].g = rand() % 65536;
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t[ct].b = rand() % 65536;
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t[ct].r /= 65535;
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t[ct].g /= 65535;
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t[ct].b /= 65535;
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} else if(click == 2) {
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t[ct].points[2 * 2 + 0] = mx;
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t[ct].points[2 * 2 + 1] = my;
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} else if(click == 3) {
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triangle_t* old = t;
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int i;
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click = 0;
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ct++;
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t = malloc(sizeof(*t) * (ct + 1));
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for(i = 0; i < ct; i++) t[i] = old[i];
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free(old);
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}
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} else if(mouse->button == MwLLMouseRight) {
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if(click > 0) {
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click = 0;
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} else if(ct > 0) {
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ct--;
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}
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}
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}
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static void mouse_move(MwWidget handle, void* user, void* call) {
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MwPoint* point = call;
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mx = point->x;
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my = point->y;
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if(click == 2) {
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t[ct].points[2 * 2 + 0] = point->x;
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t[ct].points[2 * 2 + 1] = point->y;
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}
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}
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int main() {
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MwSizeHints hints;
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MwWidget window = MwVaCreateWidget(MwWindowClass, "main", NULL, MwDEFAULT, MwDEFAULT, 640, 480,
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MwNtitle, "tripaint",
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NULL);
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MwWidget viewport = MwCreateWidget(MwViewportClass, "viewport", window, 5, 5, 630, 470 - 16 - 5);
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MwVaCreateWidget(MwLabelClass, "label", window, 5, 470 - 16 + 5, 630, 16,
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MwNtext, "Press left click to draw triangle, right click to undo",
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NULL);
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MwViewportSetSize(viewport, 1024, 768);
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t = malloc(sizeof(*t));
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opengl = MwCreateWidget(MwOpenGLClass, "opengl", MwViewportGetViewport(viewport), 0, 0, 1024, 768);
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hints.min_width = hints.max_width = 640;
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hints.min_height = hints.max_height = 480;
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MwVaApply(window, MwNsizeHints, &hints, NULL);
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MwAddUserHandler(window, MwNtickHandler, tick, NULL);
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MwAddUserHandler(opengl, MwNmouseDownHandler, mouse, NULL);
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MwAddUserHandler(opengl, MwNmouseMoveHandler, mouse_move, NULL);
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MwLoop(window);
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}
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