mirror of
https://github.com/jhasse/poly2tri.git
synced 2024-11-05 22:09:52 +01:00
135 lines
3.3 KiB
Cython
135 lines
3.3 KiB
Cython
##
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## GL convenience layer
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##
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from math import pi as PI
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from gl cimport *
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include "polydecomp.pxi"
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cdef extern from 'math.h':
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double cos(double)
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double sin(double)
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double sqrt(double)
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SEGMENTS = 25
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INCREMENT = 2.0 * PI / SEGMENTS
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def init_gl(width, height):
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glEnable(GL_LINE_SMOOTH)
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glEnable(GL_BLEND)
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
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glClearColor(0.0, 0.0, 0.0, 0.0)
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glHint (GL_LINE_SMOOTH_HINT, GL_NICEST)
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def reset_zoom(float zoom, center, size):
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zinv = 1.0 / zoom
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left = -size[0] * zinv
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right = size[0] * zinv
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bottom = -size[1] * zinv
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top = size[1] * zinv
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# Reset viewport
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glLoadIdentity()
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glMatrixMode(GL_PROJECTION)
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glLoadIdentity()
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# Reset ortho view
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glOrtho(left, right, bottom, top, 1, -1)
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glTranslatef(-center[0], -center[1], 0)
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glMatrixMode(GL_MODELVIEW)
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glDisable(GL_DEPTH_TEST)
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glLoadIdentity()
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# Clear the screen
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glClear(GL_COLOR_BUFFER_BIT)
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def draw_polygon(verts, color):
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r, g, b = color
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glColor3f(r, g, b)
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glBegin(GL_LINE_LOOP)
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for v in verts:
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glVertex2f(v[0], v[1])
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glEnd()
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def draw_line(p1, p2, color):
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r, g, b = color
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glColor3f(r, g, b)
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glBegin(GL_LINES)
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glVertex2f(p1[0], p1[1])
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glVertex2f(p2[0], p2[1])
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glEnd()
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##
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## Game engine / main loop / UI
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##
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from glfw cimport *
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import sys
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# Keyboard callback wrapper
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kbd_callback_method = None
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cdef extern void __stdcall kbd_callback(int id, int state):
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kbd_callback_method(id, state)
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cdef class Game:
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title = "Poly2Tri"
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def __init__(self, window_width, window_height):
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glfwInit()
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# 16 bit color, no depth, alpha or stencil buffers, windowed
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if not glfwOpenWindow(window_width, window_height, 8, 8, 8, 8, 24, 0, GLFW_WINDOW):
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glfwTerminate()
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raise SystemError('Unable to create GLFW window')
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glfwEnable(GLFW_STICKY_KEYS)
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glfwSwapInterval(1) #VSync on
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def register_kbd_callback(self, f):
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global kbd_callback_method
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glfwSetKeyCallback(kbd_callback)
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kbd_callback_method = f
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def main_loop(self):
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frame_count = 1
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start_time = glfwGetTime()
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running = True
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while running:
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current_time = glfwGetTime()
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#Calculate and display FPS (frames per second)
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if (current_time - start_time) > 1 or frame_count == 0:
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frame_rate = frame_count / (current_time - start_time)
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t = self.title + " (%d FPS)" % frame_rate
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glfwSetWindowTitle(t)
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start_time = current_time
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frame_count = 0
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frame_count = frame_count + 1
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# Check if the ESC key was pressed or the window was closed
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running = ((not glfwGetKey(GLFW_KEY_ESC))
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and glfwGetWindowParam(GLFW_OPENED))
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self.update()
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self.render()
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glfwSwapBuffers()
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glfwTerminate()
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property window_title:
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def __set__(self, title): self.title = title
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property time:
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def __get__(self): return glfwGetTime()
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def __set__(self, t): glfwSetTime(t) |